Mercury Outboard Bogs Down Under Load - Engine runs great in neutral, bogs down in gear under load">Engine runs great in neutral, bogs down in gear under load.

An outboard motor should never pause when attempting to increase the rate of speed. The problem is that when I am running at full throttle the engine suddenly dies. Joined Aug 16, 2001 it would bog down. Due to previous problems (seemed to be fuel starved at. Blow them out again to dry them. It will not get past 2000 rpm's. I can take it to neutral and rev it up a few times and put back in drive and it will plane out. then without warning motor quits at full throttle. Tried 2 different props, one 13 pitch, one 17, again, it doesn't have enough power to tell a different. Fast forward to May 2022, I had been in Germany 3 yrs for work and it sat too …. Dealing with a Yamaha outboard not reaching full RPM can be frustrating, but understanding the symptoms, causes, and potential solutions can help you navigate through the troubleshooting process. There is a little red lever under air silencer. walmart locations supercenter If you have good spark lets move to the fuel system. If I ease up to 1/2 or 3/4, it's fine and I can punch it the rest of the way. Hi Cara We used to race these small merc outboards on small dnghies in white water rivers. Joined Aug 16, 2001 Messages Well i put the piece of junk back in the water today and it is still bogging down after about 1/3 to …. Service during regularly scheduled annual checkups or every 100 hours of operation is recommended for outboards in normal recreational usage, annually or 500 hours for fishing guides or multiple-trip-per-week recreational fishermen. (Model 25XD) 1986-1989 25HP Mercury 2-Cyl. When Driving it would seem to have a stutter at around 4,000 RPM almost like it was sucking in air somewhere. Thread starter Jefferson; Start date Sep 10, 2002; J It wont go over 2000 rpm, it just bogs down and quits. When the unit bogs down, shut down the generator. Possible that throttle assembly needs adjust for …. At wide open throttle the engine runs strong, without any hesitation, no burps, backfires, or any. Next, if at all possible, try to run the engine off of portable Merc tank. painting jobs in my area Pressure should remain steady from idle to WOT while under load. This is a Murray 22", probably about 10-15 years old but gently used. When in the water in neutral throttling in that rpm range is smooth and trouble free. sometimes it will run great for a few times then starts the same old issue. If it has a hole, it allows raw fuel into the crankcase via the vacuum hoses. We can unhook the # 2 wire and ground it and it idles smooth. Do a bit, and insert the valve back into the block, measure the clearance. The one that we fear the most is uneven compression. Merc 115hp problems running under load. Motor needs more fuel to produce power under load (in gear). A voltage regulator maintains a constant voltage level and is frequen. I have a theory as to what’s going on with it, but want some other opinions before moving forward. Thread starter jonesn4fun; Start date Sep 19, 2016; J. When on the water Sunday I tried to adjust the carbs in forward. I have changed the fuel filters, had carbs. I am having trouble w/ my 1984 Merc 75 hp. So looked on Ebay and found a brand new cdi out of Florida for $105from Merc it was almost …. Re: 1983 Mercury Outboard 150hp "missing" under load? well "thinking" is no way to trouble shoot a motor. Good evening everyone, I'm having an awful time troubleshooting my 2001 90 HP Merc outboard bogging down under load. Engine idles and runs fine but bogs down ans will not get on plane. Bogging under load could be a fuel filter issue. 2014 Yamaha fuel injected 40hp with 35 hours. Boat doesn't seem to idle as fast as it used to (2. I just bought a 1998 Mercury 40 hp outboard (serial # 0G660803, model 40M?). 1 boat purchase at auction runs ok but bogs at 3krpm. "This is an 85 50hp Merc 4 cylinder 2 stroke, Serial Number: 06590197 Model Number: 1050625. Hitting the choke can actually keep it from stalling but she will stall if. I put it in the water Friday for the first time since last season. It restarted but would bog under load and died several times as we limped back into the marina. I’ve done the following and have the same problem: - run on a side tank. i have had it a few months and High School or GED. Running at full throttle at a thousand revs too low could easily be the cause of overheating on this motor. Mar 15, 2010 · Re: 50 hp mercury bogging down Mr. 68 289 bogs down under hard acceleration (load) I'm a college student who has been restoring a 68 coupe for the past year. It has the TKS Fuel Enrichment system. Re: Motor bogging under load -- solved! Problem solved. Many more searches and problems to resolve. Started back but wouldn't rev over 2000 rpm under a load. The motors needs to make power are few, Compression, you've nailed that one down, all looks fine as far as ring seal. turned out the timer base was not advancing when the butterflies on the carbs were opening. - Barnacle Bill's Marine Supply. 3 Mercruiser is bogging down and occasionally backfiring under load trying to plane r out. 115 hp mercury outboard bogs at full throttle under load. Started up to come back in and couldn't. Jun 14, 2019 · 1) If it has adjust screws this makes it a 60° motor. Removed Both spark plugs black but dry. 100 hour service was performed and there is no water in the fuel. It only takes about 3 minutes to swap props if needed. The purpose of these is to act similar to the accelerator pump found on 4 stroke carbs. Hey folks, Recently picked up this boat second hand and have been running into issues with motor. 25 hp tractor comparison your description points toward fuel or an electrical issue being A a restricted fuel situation. Tried choke manual and with key under load and engine bogs down further. Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Re: Boat runs great in Driveway, but stalls on water. I have a 90hp Mariner 3 cylinder, 2 stroke, 2004. Vibration from the engine prop. nylannuities Any more than an idle will empty a barrel in about a heartbeat. Cleaned the plugs and it still does the same thing. When I changed tanks, fuel from marina, while running full throttle, engine would bog down, repeatedly. I just bought a 1997 Nitro Savage 896 that came with the engine above. Electric fuel pump and 2bbl carb. Adjust each carb to best idle + 1/8 to 1/4 turn, ideally, adjust out on the water a blade width at a time each, just until any throttle hesitation is. Thanks for the advice guys, I took the front of the carb off and primed the fuel, I could see it seeping out of the bottom of the needle, I also took off each HT lead and the engine made no real change in pitch and kept running on both accounts. Problem is that it will bog down and stall when you accelerate either under load or even when fired up in the driveway. I bought a 1999 Cobalt 233 with a 2019 Merc 383 Stroker Engine and have been working through deferred maintenance issues. TLDR:It appears to have been a crack in a fuel hose introducing too much air to the mixture. Quick diagnosis showed the problem and was a simple fix. The old diaphragm was kind of stretched where it makes contact with the spring, but it wasn't torn or see-through. rural homes for sale by owner near me Joined Jun 22, 2010 Messages 1. It had 3 brand new coils, new rectifier, good stater. A loss of power in a 2-stroke outboard engine at full throttle can be caused by issues like a dirty or clogged carburetor, fouled spark plugs, damaged reed valves, an incorrect fuel-to-oil mixture, or a clogged fuel filter. 0 mercruiser bogging under acceleration. Pin hole in the aluminum head, under load/pressure, would inject water directly into a cylinder. i got a 1978 hydra sports 18' bass boat its got a 150 hp straight six 1977 merc and at a idle it runs smoth and it will rev up to 6 grand but when i put it in gear it will still run at idle but when i push the throttle up it just dies out. Thread starter Barleyruns; Start date May 1, 2021; B. bulb until fuel empties from end of carb hose into a jar. (No change in problem) 8:Change ignition module/swiitch unit. In under two minutes, you could learn how to solve the problem for good! This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. It's only happened once or twice where the motor's been running long under load bogging down at 3400rpm then suddenly reved up and worked fine w, 99% of the time it gets better at a start. Ethanol is messing with older hoses and connectors. After installing the new module it would not beep at all after I. My up until now perfectly running AQ130C suddenly started acting up last weekend. Possible Cause: Damaged or leaking gaskets. Two trips ago I noticed that the motor would bog down a bit. This is why I recommend adding a fuel water seperator on any motor. it seems to run at full revs ok but when engaging the deck or hit a thicker patch of grass it bogs right down or stalls unless i engage the deck slowly. Re: 2000 Johnson 175 bogging down. 5hp) it runs fine in a barrel starts first pull. Unless the motor is just out of winter storage. If left in the override position it can cause extra rich/rough idle. Jun 1, 2023 · In some cases, the loss of power in your outboard motor might stem from mechanical problems, such as: 1. Twice this summer the engine has bogged down/missed under load (when towing a tube behind the. It will take off fine and get up to speed then after a bit it starts to stutter. fnf fonts Known for their reliability and performance, these engines have become a popular choice for boating enthusiasts worldwide. Is your outboard jon boat motor bogging down or losing power? We will talk about the most common items that cause this. Hi I have a 2004 Yamaha 115 mod no. pensacola police dispatched calls However, the overheating caused an exhaust manifold gasket to fail, creating a small water leak. Mercury outboard bogs on throttling can be caused by a bad fuel filter. Move this wire around from the opening by taping it to another part or wedging it between components. It's customary to do a compression test and spark test first. By elimination it has to be the carbs and the …. I then would give it WOT and I'd be right back up on plane. oops i forgot it cranks and runs …. We have a 2003 Mercury 15hp outboard motor on our dinghy (which we purchased with our Beneteau sailboat) and it shuts down (or off) when under a heavy load. My mechanic said it idled just fine in the water tank. When I attempt to go full throttle, it will run fine for a few seconds and then start bogging down and/or lose power. The most likely reason that your two-stroke engine is stalling under load is that your carburetor is dirty or dead. to clarify the small balance tubes a bit,one will come from just under the flywheel as this is where it hooks to the upper main bearing cap. I'll try to track down the Sea Foam in the meantime. Run the engine on another fuel source to verify. If lots of trash you need complete fuel. Just experiencing a fuel starvation issue at higher RPM which bogs down and then recovers RPM. I believe there is one more between the center pair of cylinders. Ignition not starting properly or bogging. It acted like it was getting gunk in the fuel line or just choking out. When it's bogging down it takes 60-90+ seconds to wind up to 3400rpm at full throttle. I took it to the shop and they replaced the anti-siphon valve. The motor ran great for the first 3 months and then late last year started bogging down/sputtering on acceleration with 2 people in the boat. Re: My outboard johnson starts and idles fine then stalls when put in gear. Then disconnect the fuel supply to the engine and remove the hose seal. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15 mins to install) made the thing. 9 4 stroke mercury bogging down after half throttle. Re: 84' 150 black max bogging out under load. Ideling and starting is good, but between 1000 1/min and about 2500 1/min in gear the engine is. Engage 3pt rototiller and start to till, runs fine for a bit then stalls, rpm drops to almost idle. It will push poor quality gasoline out of the circuit. turns out the propeller was too big. Re: Mercury Outboard 90hp 6 cyl 2 stroke - Bogs down past half throttle I have a srt8 six Merc (1974) has a Manual Fuel Pump, I was having a problem just like you and it was because fuel was leaking through one of the diaphragms. Flint99, pulled '81 Johnson 70 off transom yesterday. Good morning my name is***** Nevada. Once a year, change the cap, rotor, plugs, all fuel filters (depending on the actual serial # XXXXX the engine it can have up to 3) clean the spark arrestor. gif feet I have had carb issues in the past and have rebuilt the carb. A file may be used, or even rubbing the stem back and forth on sandpaper will remove some metal, and increase the clearance. Maybe spend 100 bucks and take it in. And this is most likely caused by the ethanol content of the gas. Symptom #1: The last couple times I've taken my skiff out I noticed the motor would hesitate for a second after giving it throttle when taking off to get the boat on plane. Or into a large container pump all the fuel out. Which online-only banking solution is better for you? Read our review to compare Mercury and Novo’s features, use cases, and fees. Mechanic's Assistant: I understand that you're experiencing issues with your 1998 Mercury EFI 250 hp outboard motor. Bought my boat last summer ran great, put sta-bil in the gas for the first time. Some motors have a control device that if the motor becomes hot it reduces the rev's so not to overheat. Solder a spark plug wire to one which you can connect to the spark plug boots, and a ground wire of some kind to the other to connect to the powerhead somewhere. Crossed coil signal wires, can cause a damaged piston if not fixed. The boat has been sitting in the water in a boat house for two years. I have a Mercury 8HP outboard, not sure of. Aug 19, 2020 · Hello good people, hopefully someone can advise and or help. Joined Sep 19, 2016 Messages 4. If pressure falls of at RPM then you will need further testing and inspection of booth fuel pumps, fittings, and hoses. Overall, the motor is in very good condition, but looks to have, at some stage, had the power head off and the cylinder head off. Runs great up to about 25 mph but any more throttle than that and engine bogs down. Mercury Classic 50 (45HP 2-Stroke Outboard) S/N: A949635 Symptom: Bogs down under any load, will not plane boat Good evening, I am currently helping a buddy work on his Mercury Classic 50 outboard. When it stops if feels like it is starving for fuel. Hi, I took our pontoon boat with a 90hp Merc. The right propeller size should be used in a boat. Typical to other posts I’ve read the engine revs fine on Muffs but once it’s under load the problem persists. coupons for hy vee Drop off a buddy to back the trailer down. Try this: Make certain that you have adequate clearance to trim the engine ALL THE WAY DOWN. Water cooling discharge was fine with no overheating. Crank the bow of the boat all the way up, and stick the hose connected to the electric fuel pump 5 feet into the bottom and back of the tank. They can die when put in gear because one or more cylinders may have a problem and are not firing. Re: Engine idles and runs fine but bogs down ans will not get on plane Im going to guess electrical but am not a outboard specialist! Ironically Im having a similar broblem with my 150 Merc! I think that it is a coil switch on mine! I have one ordered and have not received it yet so really do not know if this is going to fix the problem!. The other plugs if I pull the wires it just misses a tad. In the case of a mercury outboard motor, you should also load the boat according to the limits of load specified by the mercury outboard motor manufacturer. 0L bogging down: This is assuming that the engine timing is correctly set at base timing (not every mechanic knows the correct steps for this), and the timing advance is working properly. Fuel pressure fluctuated, drops to 35PSI under load. A prop that is bent, broken, worn out or misaligned can create heavy shaking. I checked the tank vent (OK), the tanks is clean, the screen intake is clean, i changed the check valve that was stiff and I was convinced …. There are TILT limits and TRIM LIMITS set within the PCM of the engine. While there are a few components that make up the overall fuel mixture, the needle is one of the key parts that has a dramatic impact on how your engine runs across the entire throttle range. Checked intake system for air leaks. If I 'throttle down' to WOT, it'll typically just seem like it is tied to an anchor and hold at about 3800. Those are the only 3 ways to test it. Engine won’t start or turn over. Plus going through my 15hp kicker and lube the lower unit in it also. amb furniture store Your problem has been going on for two years. The pickle is I can sell this for about $6100-6900 but only if running good. Could be the swash /valve plate sticking from contamination or a stuck load piston. - I took it to a tech who told me that someone did a botch job on a carb rebuild using automotive parts. An outboard bogging down is one of the biggest challenges a boat operator encounters. It still runs but roughly and only at about 1/2 power. miss hammy tv twitter great ideas- also check the voltage at idle- my efi was doing same thing, I changed the fuel lines and etc. At first I thought maybe the throttle was backing off but that wasnt it. I could throw it in neutral and hold it near redline without any problems. The trash very small, may be light brown in color. Every additional inch of blade pitch reduces RPM by about 150-200. This is Why a Pulsar Generator Bogs Down Under Load. Starts fine and idles fine, but when I go to accelerate to get on plane it will bog down just prior to getting on top. jfmoore79 said: I have a Craftsman 46' 20HP lawn tractor that is having an odd issue. It will be one of two components. I realized that pulling the choke helped the issue so I completely cleaned and rebuilt the. It's often misunderstood because the engine will usually idle well and that throws off the diagnosis, but it works like this. Making us think it may have been apart form …. backpage san gabriel valley Mercury 2 stroke 115 'tower of power' prop/hub problem mentioning while running in driveway if i remove plug wires 3 OR 4 indivually it affects the motor the most and almost bogs down to die. A little over a month ago, he called me from the lake stating he had fuel gushing out of the front of his upper carburetor and it …. Recently installed thermostats to see if Engine would idle better at low speeds. - I took it to a tech who told me that someone did a botch job on a carb rebuild …. When it happens we stop the motor take it out of the water for a minute or so, start it back up and. "Carbs have been torn down, cleaned, ensured orfices are clear and reassembled with OLD gaskets. Compare to other cards and apply online in seconds Info about Mercury Credit Card has been collected by. I then proceeded to use the motor about a week or so later (on a boat that was meant for a short shaft tiller) and the merc would start. Any help is appreciated because i am baffled!. When putting it to full throttle it stalls, unless i move the throttle lever slowly. I can also plane out with full throttle for a few seconds. Some of the reasons why mercury outboard bogs when throttling includes EFI problems, faulty Carburetor, bad ignition system, faulty fuel filter and even problems …. The 90/10 gasoline is giving marine mechanics a lot of work. 115 Hp Mercury Outboard Bogs At Full Throttle Under Load Outlet, 59% Discount, www. Remove a carb, drain the bowl and put a short length of line on the inlet nipple. 2018 acura rdx problems Over time it has progressed to the point now that it will not pick up at all. Oct 29, 2016 · Do I recommend doing this? Nope. I am working on what I believe is a 1986 MERCURY 150 XR 2. 115txrc, and today when I was backing the boat in the river it kept bogging down when given more gas, but when I finally got in river it ran find all day until I tried to reload on trailer and i give it gas to push the boat it just bogs down and shut, finally had to wrench it on, any idea what. When a load is applied (letting out the clutch) it will bog down. i am getting around 90lbs compression per cylinder. If neither of those tests show where the issue is, then pop off the cowling and pump up the fuel ball. Trolled for about 20 minutes and stopped and fished about 45 minutes. This problem began to develop just recently. Results: 165-185 in all 4 cylinders. My Mercury outboard was bogging and stalling at almost full throttle …. It is located on top of the throttle body and fairly easy to replace. To test the motor, the first step is to remove the power to it by disconnecting the blue and green wires. Clean and gap to spec, or replace. Aged plug can foul at low throttle and misfire, bog when the throttle opens, til the plugs burn off , then all seems fine till you idle again. If there is a quarter of the wrong fuel in the tank, top it off with the right fuel. Took boat out and something you said low Roma and low speed. We have a 98 25hp Evinrude that has an annoying habit of intermittently bogging down or losing power when we run at full throttle. When the boat is put in gear the engine bogs down. If this doesn't fix it, I'm repowering. It currently bogs down under load and dies. I have a 1991 Rivera deckboat with a 4. It's a wire, just a guess, anything this weird and long is usually a wire corroding almost all the way through in a wire connector. When idling or anything up to about 1/3 throttle it seems great, but after that there is a noticeable drop in power and the engine seems to stumble/bog down and actually drops speed. com website and check the troubleshooting guide for the ADI ignition in your motor. For million $$$ sponsorships (or just. The ignition module cost me $450. nearest smoke shop near me I bought an old 25 hp merc longshaft tiller outboard last year. if I let it sit for 10-15 minutes, it will start fine and. Last year would bog down but then take off. 65 hp Mercury outboard bogs under load. Last weekend I took it out & it started bogging down. It it hard to start after shutting off and cranks similar to trying to crank it with the kill switch off. It now runs like a Honda should run (starts immediately, runs silky smooth) except for one thing—it still bogs down under rapid acceleration. The float does not normally need adjustment, and such adjustment is difficult, requiring controlled heat and much meticulous patience and skill. brittany klemka Idle mixture on 2-strokes have to be a bit fatter than 4-strokes to allow just enough 'richness' for acceleration. Once in gear under load it bogs down at 2000 rpms, then flattens out and will almost stall unless you back off the throttle. For about the past year, however, the motor has, when run at high throttle (above about 75% according to the markings on the tiller control), suddenly dropped RPM's as the throttle is turned any higher. So can obstructions to the prop …. Every time we forgot to loosen the vent screw on the fuel tank cap after switching tanks, the engine would run fine until it sucked enough fuel to create a vacuum in the tank; then it would start bogging down from fuel starvation. The most obvious answer is fuel. Compression checked out at 123-125 on all …. 2012 Mercury (90 EFI outboard) starts at …. Of course, gas was in the lines the entire time. Mercury bogs down with throttle. 2) Since it was fine at slow speed’s I was thinking it was not getting enough gas and changed both fuel filters. When this problem started, the boat ran great down the lake for about 5 milesthen started to slow down until it just bogged out. When it is put into forward the boat doesn't have the speed at WOT that it …. Load more The Best Products Have the Best Dealers. Carburetor Issue: So yes there was a carburetor problem. 96 Mercury 40 HP 4 cyl bogs down at 1/2-full throttle. These are just a few reasons for two-stroke. What woul i had this problem with two separate johnson 85's. Why mercury Outboard Motor Bogs When. Mercury outboard manuals Nissan outboard manuals Suzuki outboard manuals 88 bayliner cabin cruiser bogs down under full throttle. I have a 1978 Mercury 500 50 hp thunderbolt. Problems like hard starting, bogging down under load, or excessively high or low idle speeds often come down to improper carburetor jetting. Running break-in oil in the tank, the motor starts good, idles fine, but when I try to get on plane, it bogs out at 1800 RPMS. Then you can do a few inexpensive maintenance items such as changing all filters including the engine filter under the cowling, new plugs, check hoses and connections. Another possible reason your outboard motor is struggling to reach full speed is an air leak in your boat’s fuel line. If you go slowly through the rpm it could take a minute or more. Ok the primer bulb being sucked flat is a fuel restriction in the fuel system. Any ideas? My 1983 50 hp Mercury outboard will not idle. Beneteau Oceanis 40cc Little River, SC. Run it about a 1 mile to the ramp. However, not all 15-horsepower Mercury outboards are two-stroke engines; many newer models are. Although several people are complaining of shut-down, the underlying cause could be different. Tried moving the timing advance under load and it goes no higher. Problems with the delivery of. I have a 2014 20 hp Mercury 4-stroke Tiller with power trim (I know, very rare) The power trim works perfectly fine while at idle speed but once I’m going any faster than that the power trim won’t trim up. Re: Suzuki DF50 suddenly runs rough & stalls. One way to tell if the propeller is to blame is intense vibrations while running at higher RPMs. I have been having issues on my mercruiser 3. Engine Overheating Problem: Several users have claimed that they encountered overheating issues on their Tohatsu outboard motor. You can stop pumping when about half a liter of fuel has been ejected. It will run fine at half throttle after that. I just received this boat as a hand-me-down from my father. Recently been working on a 1991 Bayliner Capri with a 4. autozone near me directions So many things can go wrong on a boat but here are a. The common causes of 2 stroke bogging at full throttle include using the wrong gas mix, dirty or clogged air filters, damaged spark plugs or barrel gaskets, and damaged intake manifold gaskets. Then I can fire it right back up and it will do the same thing again. If you put the wrong fuel in the tank, drain it if the tank is full. Timing advances as it should to end (doesn't even hit the stop screw). I have a 1995 Tracker/Mercury 40 HP that runs well early in the morning. mercury 15hp 2 stroke bogging down : (. If the engine is fuel injected and has a fuel seperator ( I cant remember anything) drain the fuel from the seperator into container and look for water and trash. Feels as it went to safe mode with no alarms or buzzers going off. I put a gasket kit in the carb. There are several potential causes of an outboard motor bogging down at full throttle. steuben county indiana recent arrests Re: 115 yamaha 2stroke bogging down. 86-88 150 Mariner Magnum V6 motorengine idles and runs fine but bogs down and will not get on plane. If the level is low, add hydraulic oil in the reservoir. Inboard & Sterndrive Engines "94 40hp evin. After running for a while at high speed, if I bring it down to a stop or low RPM, then try to accelerate it bogs out while trying to go over 1,500RPM. Chrome: Even beyond ads, some websites are so cluttered with autoplay videos, sidebars, and other distractions, they make it hard to actually stick to the one thing you came to rea. Boat Won't Go Over 3,000 RPM Under Load - Example Solutions. Ask the experts on our Suzuki Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Start by disconnecting the fuel hose to the carbs, point it into a suitable container and crank the motor, watching. You didn't mention looking at the EGR. When your engine bogs down or loses power during acceleration, it is a clear indication that the mixture is too lean. I have a 2004 150 yamaha 2-stroke that starts and runs fine but will bog if you try to push the throttle over ~3200rpm. 84 Mariner 90hp Bogging Down 84 Mariner 90hp Bogging Down. The issues is that when it is put under load and I try to get past a certain mid-range rpm, the engine starts bogging out. If one plug feels cooler than the other after some run time, that's your culprit. Followed by spray carb clean from a can through the passageways. by Dave Wilson » Wed Jan 11, 2012 3:01 am. Otherwise, I would have to advise you to have an experienced and certified Mercury tech check over the motor with his test equipment. Hello All, My 1999 75 Mercury 2 stroke outboard is running rough. speeco log splitter Force Outboard Motors were initially manufactured by Chrysler Marine until 1984, when Chrysler’s outboard division was sold to U. It starts and runs fantastic in barrel and water muffs but when it is in the lake it bogs down when giving it throttle. During my last fishing trip the outboard started to sputters ( runs irregular) with 6 beeps every time i start the engine. Damaged or worn-out drive belts. B-man wrote: The fuel line is a common culprit. "Hi, I have a 1997 200HP Johnson. They did run the boat on open water tests. A vaccum gage plumbed into the intake manifold vacuum can spot a clogged exhaust. When my friend gave it to me, it cranked. The Mercury Marine serial number 0B308972 refers to a 60 horsepower, three-cylinder outboard motor manufactured in 1988. Bought the boat in 2015 when I got back from a yr and half in the sandbox working. An outboard motor can lose power under load due to various reasons, such as a clogged fuel line, a dirty air filter, a failing ignition coil, or a damaged propeller. Re: 2 stroke outboard starts but then dies when throttled or idle. this johnson is a little older than yours but most likely works on the same premise. Typical to other posts I've read the engine revs fine on Muffs but once it's under load the problem persists. My JD 756 with 620 hours starts instantly and runs smoothly through the full RPM range. I took the boat out to test and it ran great at full throttle for about 15 minutes. it runs down along the motor behind the power pack. Re: 2003 yamaha 115 4 stroke bogs down, misses badly above idle. Its been to two mechanics and came back with two different answers. best day to dumpster dive dollar general Hey everyone first post and new to the boating world. I have a 2006 f60 that starts and idles fine but after running a short distance at WOT it starts to miss and lose power. It will work correctly for brief periods of time and it doesn't happen at low RPM's with no load so I've never been able to replicate any symptoms in the driveway. Oct 10, 2022 · Diagnosing a Mercury Mariner 60hp 2-stroke outboard that won't rev out or accelerate. The ignition switch sends a signal to the solenoid when you turn your key allowing it to open; this allows voltage from your battery to pass through it to the starter motor. If you had to replace one part it would be this. If you have not changed the prop ----> increased pitch etc. Ok guys, looking for a few pointers here on things to look for before I throw parts at it that will not fix the problem. Fuel filters are new and no fuel in pump sight line so I am guessing fuel pump is ok. Going to clean plugs and carbs, check for spark, any other advice appreciated. 9 evinrude runs but will not hit high rpm. The throttle point at which the motor begins to bog down varies somewhat. Mercury motor bogs down under load. For while it would bog a little and then pick up an run normal. Out of the water in gear it revs high and runs fine, which is the same with it in neutral …. Test out your boat's operation at full throttle again. I notice that my outboard motor tends to stumble or misfire when accelerating under load if the spark plug gap is greater than the specified or recommended spark plug gap. I replaced the plugs, pickup sensor {eye}, power pack, cleaned the carbs and replaced the spaghetti gaskets. Took it out Memorial day and it ran great. So, make sure to inspect all the possible areas. Nov 30, 2020 · I was just given a 2003 Fisher 1600 with a 2003 Mercury 50 hp 4-stroke EFI. custom freightliner columbia It idle's beautifully, revs up in neutral, but when you give it full throttle in gear, it winds up for about 15 seconds and then just dies down to a sputter, occaisionally it will completely die and won't. Inboard & Sterndrive Engines Johnson 48 SLP intermittently bogs down under load.