Any ideas? Another common reason why your engine is bogging down when you apply throttle is a clogged fuel filter. Locks, Boat Deck These tips will help to fix stalling in your boat engine and prevent it from occurring ever again. Mine did that at the beginning of summer. Outboard engines, as with any internal combustion engine, require air, fuel and spark to maintain adequate combustion throughout the power band. Either the engines lift pump has failed, the boat is out of fuel. Rollers, Boat Trailer Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle. Fixing this is not that challenging; all that is required of you is to clean debris that is available in the airbox. & A loss of vacuum pressure can also be detected, during acceleration, with a vacuum gauge attached. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'bornagainboating_com-mobile-leaderboard-1','ezslot_24',114,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-mobile-leaderboard-1-0'); Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. The truth is that when your outboard will not throttle up, theres plenty you can do to fix the most common issues and improve performance once and for all. If this screen is obstructed, it restricts the lift pump from being able to pull the fuel from the fuel tank to your engine! There is a more complex troubleshooting method where we identify the kind of vacuum the fuel pump has. Bought all new metal connectors and problem solved. We put a brand new carburetor on it and new plugs and it fired up just fine. Covers, Boat Shrink Wrap I adjusted the idel screws and throttle cable. Friend of mine had problem with his outboard motor stalling.Lets take a look.Email:arniatla@gmail.com Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. Kits, Seadog Stainless Steel Cup 6. My Mercury outboard was bogging and stalling at almost full throttle after about 10 mins of runnin. Engine starts on hose with no issue. To access it, remove the lower unit, undo the bolts on the water pump housing. It was sitting for quite a few years before I bought it from a friend. As a boat owner, spending your free time in the waters tend to be a fan moment. Covers, Boat Cover Rails, Marine Tools & Tool A squirt of starter fluid at the boot while running will tell you. What can I do? This helps indicate that cooling water is flowing. mercury 115 4-stroke EFI (2003) motor starts and idles - Answered by a verified Marine Mechanic . 3. And this is most likely caused by the ethanol content of the gas. The engine accelerates and runs great once it gets past about 900 rpm's; the problem only occurs when I slowly accelerate from very low rpm's. Hardware, Boat Seats by Same problem, go only 5mph try to go faster it dies . I have an 89 Yamaha 50LF , I have rebuilt carbs, several times and then payed 800 too have them rebuilt. I have a 2000 Johnson 70 hp oil injected outboard. It starts ok. Every now and then it has to be given a little coaxing. Anchor Box Anchors, Fishing Rod & Reel So, if you notice the primer bulb is sucking flat, youve got a restriction somewhere between the bulb and the fuel tank pick up. If the fuse isnt blown. 74. You notice a lack of power when you try to accelerate. Damage to a fuel line is also associated with engine stalling when accelerating. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. We can even pull the pump off of the engine to bench test it! Brand new they had terrible restriction. This debris bogs down outboard motors when applying throttle, causing an uneven performance. New York, NY 10001, Hours If it is in bad condition, you will need to swap out the old impeller with a new matching part. The motor start and runs fine without issue. Best of all, clear line is not insulated, so theres no risk of debris clogging the fuel filter and other parts. Forums, Find (7 Reasons).if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-banner-1','ezslot_9',104,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-banner-1-0'); For your boat engine to run smoothly, it will require three vital things; spark, fuel, and air. Check both the spark plug caps and ignition coil leads for proper resistance and replace the parts. During startup or idle, this may not be a problem, but when you throttle down and draw in more gasoline, the pressure may cause all of the debris to block the inlet. it would stall and bog while trying to get underway. Re: New Yamaha 150 Stalls when shifting. If you have an electric motor, you may need another person to crank the engine over while you twist your throttle position open. If it revs you have a vacuum leak. link to Can I Run My Outboard Without A Poppet Valve? A tangled propeller is a common issue, especially for those who boat in busy waterways or shallow depths. The fuel filters primary purpose is to strain out any debris and dirt that may reach the engine, but the fuel filter itself can become blocked if there is enough debris. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. As mentioned in the previous section, the interior liner of the fuel hose is often the source of debris infiltrating your fuel system. Hardware, Boat Cabin This pick-up screen can get clogged and creates a blockage. Start by inspecting the fuel filter. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. Video, GPS Chartplotters & Category, View Best Boat Report is dedicated to advancing boating knowledge, safety, and enjoyment through education and sharing of knowledge. thank you. Deals, Dealer if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-leader-2','ezslot_10',126,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-leader-2','ezslot_11',126,'0','1'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-2-0_1');.leader-2-multi-126{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}You dont want your boat engine to start developing problems while you are far from the mainland. link to Accidentally Put Boat In Reverse While Driving? gooseman1. What can I do ? Smoke A complete replacement is needed to address this problem. Turned out to be the best $24 bucks I ever spent! Deals, Electrical Youll need to figure out the cause of your boat engines failure. 90 outboard mercury 2 stroke bogs down and runs rough when air/carb cover on . Big Fish. There are several reasons your outboard motor may hesitate upon acceleration. We are here to help you learn more about your boat, how it works, and how to take care of it for many years of enjoyment out on the water! Holders, Cabin Accessories & Adjust the air gap if needed. Guide, Boat As long as you do have some extra line to spare, we recommend that you cut the hose off of the hose barb using a utility knife. You definitely want to perform regular maintenance on your boat to make sure that you arent using old gas; however as long as there is no damage to the system then this can be a somewhat easy problem to solve. Accessories, Big Jon Although no one likes to find out about bad news; performing regular maintenance on your engine will help you find problems when you can deal with them as opposed to when you are out on the water in your boat. Seats, Offshore Boat If I slam the throttle down it will hesatate and then start to go. Check the lines for an air leak. You may also want to try using a mixture of fuel conditioner/stabilizers with your gasoline that takes out the ethanol from the gasoline. (7 Reasons)if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-medrectangle-3','ezslot_13',102,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-medrectangle-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-medrectangle-3','ezslot_14',102,'0','1'])};__ez_fad_position('div-gpt-ad-takeocean_com-medrectangle-3-0_1');.medrectangle-3-multi-102{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}. I turned around and went back in and the engine stalled when I brought it back to idle while trying to dock. Furniture, Boat Seat Pedestals & Spark plugs are an easy fix, requiring only a spark plug socket and wrench to remove them from their housing. Engine stalls when throttle increased A couple of weeks ago I was taking the boat out and found that I had no power once I exited the marina. Because gasoline can degrade the plastic of your fuel filter, its important to drain the engine of gas in between seasons to keep your outboard motor in working condition. Increasing the throttle speed causes the motor to shut off, as if fuel starved, but only during initial acceleration. MondayFriday: 9:00AM5:00PM Fuel filters help reduce this problem by filtering particles from the fuel before they can reach small, easy-to-clog lines. To help prevent this from occurring, you should consider maintaining your engine regularly. The spark will help in igniting the fuel and air. From boating to fishing, from scuba diving to windsurfing, from water tubing to snow tubing. The main difference is that there are usually fewer cylinders, operating in either a two-stage or four-stage cycle. It really helps us out and we thank you so much for your support! if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-3','ezslot_22',116,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-3-0'); And you can also donate by clicking the donate button here or on the right hand of the screen! Hardware, Marine However, you may have Take The Ocean was started because we love all kinds of water activities. Basically, it is going to affect the amount of air getting into the mixture in your engine. The valves are needed to prevent fuel from siphoning out of the fuel tank. My 90 mercury outboard running good with carb cover off . But. My 2006 triton sf 186 If you have a good spark, make sure that the air gap is within specification. However, if this doesnt solve the issue, the next step is to check the ECM output peak voltage, as well as the condition of other electrical components like the electric oil pump and oil level sensor. How to Choose the Right Shimano Saltwater Fishing Reel for Offshore Fishing: A Beginners Guide. Motors, Fishing Downriggers & Look for any blockages and remove them insects and other pests tend to make nests in this area when boats are in storage. My first response is to pose another question: Why did World War II Japanese kamikaze pilots wear helmets? Required fields are marked *, Address Re: Outboard dies when throttling up from idle. Accessories, Electronic Navigation Maintenance, Fiberglass & Epoxy I can idle (sometimes it's rough) and putt around, but the engine stalls when I accelerate above 5-6 mph. Keep in mind this process will depend heavily on how your fuel lines are set up in your boat. Re: hesitation/stalling on slow acceleration, CREATE Another issue that may be causing your boat engine to stall is an air box that is dirty. Nowadays, most manufacturers use shut-off valves on the water separators and have the lines above the top of the tank. One clear sign that your fuel filter is the culprit of your outboard bog is if you notice the plastic covering degrading and darkening over time. ,,not always fixable ..sometimes the idle is to low but I bet it is the carbs IMHO. If I push the throttle up more quickly, the initial hesitation is very slight and it never stalls. To help with fixing this issue, you should consider adhering to the tips discussed in this article. The same thing can be said for your spark, if you are not receiving one at the right time or you are receiving a weak spark. Holder, Anchor & Dock Wells, Toilet & Waste & Rings, Prop Nut Kits & Between the pickup tube that is in the fuel tank, to the engine lift pump. Had the same problem with mine. These are common questions for those who love to boat, only to suffer from poor performance from their outboard motor when out on the water. Any substance that will get in the sparks electrodes will end up preventing it from producing a strong spark that will ignite air and fuel for the engine to start running.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-large-mobile-banner-2','ezslot_7',108,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-large-mobile-banner-2-0'); Fortunately, this is not a significant problem since you can clean the spark plug or consider replacing them, allowing your engine to start functioning as usual. To avoid it, I have to bring down the speed really slow. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. There are problems that can happen when you are only first starting as well as when your engine is running hot. Im kinda lost. Bilge Pumps, Shop Two strokes do not idle smoothly. Terminals, Marine Fuse Blocks & It seems to idle fine and shifts into gear fine. Had a similar issue but instead of dying it wouldn't get anywhere near plane. My compression my 1985 mercury two cycle is 80 on all six cylinders and I change all the electrical parts on the outside like the coils and spark plugs almost everything in my motor is still doing the same thing its running rough and when I try to go full throttle itll die on me like it chokes himself what can I do to fix this problem. Engine just revs. Accessories, PWC Parts & Ensure that the air vent of your fuel tank is completely open and is free from any restrictions. Tubes, Shop Also, be sure to adequately secure any hose clamps to prevent air, water, or debris from entering the engine. #3. Why is your outboard not reaching top speed?Maybe your boat has lost acceleration, top speed, or just seems to be down on power. Its one of the parts on your boat that can deteriorate over time, which will lead to a lot of stalling or even complete failure in your engine if you havent checked it and it has gone bad. Thanks for reading and we look forward to reading your responses and comments. Over time, the fuel filter becomes brittle and may even leak gasoline. Parts, Inflatable Detectors, Binoculars & A good tip to keep in mind: Always check to see if you have extra fuel hose at whichever station you are checking next. Check your bulge pump, your boat may have a foot of water under the floor. You need to allow it the time to stabilize to . This leads to the fuel tank selector switch (for boats that have more than one tank).if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'bornagainboating_com-banner-1','ezslot_14',109,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-banner-1-0'); Or, if your boat doesnt have a selector switch, it should lead to a fuel water separator. By doing so, you will be able to notice this engine problem before forcing it to be a non-working system. This is exactly where we started! Now that you know about stalling engine and fuel issues, check out these other helpful articles packed full of information to help you with your boat! Check the gap on all the spark plugs. Shop for the boat parts you need with PartsVu and reference our Marine Tool Kits guide to learn about the tools essential to your outboard engine maintenance. Please someone help me and tell me whats happening this two engine? The fuel tank pickup itself could also be corroded, or even broken.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-large-mobile-banner-2','ezslot_20',111,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-large-mobile-banner-2-0'); If your boat engine continues to stall, we still need to cover the blockages issue. Deals, Paint & Maintenance Messages. Well start the engine and then you will want to keep an eye out for air bubbles flowing through the clear hose! Usually, a dirty carburetor causes incorrect air as well as fuel mixture, which means that the engine of your boat will not operate, as usual, resulting in a stall. User since 6/19/09. Parts, Boat Tubing & Using gloves and a small container to catch any spilling gas, carefully remove the cover of the fuel filter. Also, use a wrench to tighten the steering pivot and mounting bolt if either is loose, which may be the source of the excessive outboard vibrations. Get Your Own Born Again Boating Apparel! A yearly carburetor cleaning and adjustment prior to the start of the season are the best way to prevent the development of stalling problems caused by carburetors. Turn the low idle up if the motor stalls out at low RPMs. We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. If your outboard will not throttle up, the impeller is the likely culprit. Such a problem can be dangerous if it occurs in the open sea and the marine engine cannot be restarted. Communication, Auto Pilot Can You Run An Outboard Without A Poppet Valve? It would be best if you considered staying on top when it comes to low compression in the boats engine to help in preventing it from becoming faulty and stalling with accelerating.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-mobile-leaderboard-2','ezslot_19',113,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-mobile-leaderboard-2-0'); You may also like: Simple And Inexpensive Boat Security While You Are Away. This engine problem before forcing it to be the best $ 24 bucks I ever spent turned out be. Before forcing it to be the best $ 24 bucks I ever spent an motor., PWC parts & Ensure that the air gap if needed & Adjust the vent... 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Sea and the engine stalled when I brought it back to idle while trying to dock Boat failure... And ignition coil leads for proper resistance and replace the parts busy waterways or shallow depths, Shop Two do. If you have a foot of water activities able to notice this problem! There are several reasons your outboard will not throttle up, the is.