,,not always fixable ..sometimes the idle is to low but I bet it is the carbs IMHO. Oh each mechanic rebuilt the carbs. If there is any debris wrapped around the impeller, remove it completely and look for any signs of damage (such as scarring, bending, grooving melting). Popular Mechanics: How To Unclog An Outboard Motor. You notice a lack of power when you try to accelerate. I turned around and went back in and the engine stalled when I brought it back to idle while trying to dock. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. Biminis, RV & Trailer Faulty Spark Plug A faulty spark plug is considered one of the significant causes of stalling engines in boats. & Circuit And into the bilge in the event the hose coming from the pick up is perforated. Protection, Dock Storage & Any thoughts? What could it be? And are only required if the fuel lines from the top of the tank go below the top of the tank. Copyright 2019 IBOATS. Storage link to Can I Run My Outboard Without A Poppet Valve? Mine uses compression from one cylinder and vacuum from another the actuate the diaphragms. Sometimes she will stall but not always. Big Fish. Idles @ around 5000-6000 rpm. It often occurs as a result of dirt or plain non-working airflow sensor.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'takeocean_com-large-mobile-banner-1','ezslot_3',114,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-large-mobile-banner-1-0'); Unlike low compression, fixing a faulty air flow sensor is relatively easy. Honda 5hp Outboard, Boat In case you are using gasoline mixed with ethanol, it will attract moisture as time progresses. What well do is simply connect the hose inline on the engine where the fuel line runs into the engine. compression and vacuum drives the fuel pump. Parts, Boat Tubing & Combos, Fishing Tools & Justin Chen is a freelance writer and photographer with 6 years of professional experience in outdoor activities, extreme sports, travel and marketing topics. 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. Professionals. However, if you dont have a damaged system, this becomes a relatively easy issue to tackle. Be sure to perform this test in the water or attach a freshwater source to prevent overheating your engine. So if your boat engine keeps stalling, here is some of the best information about what may be causing the problem. Two strokes do not idle smoothly. But as soon as I slow down its back to it. Parts, Inflatable Any ideas? Read our article that explains exactly How Fuel Supply Modules & Vapor Separator Tanks Operate! If You Accidentally Go Too Far And Put Boat In Reverse While Can I Run My Outboard Without A Poppet Valve? This increases the friction and causes the bog, preventing it from rotating to propel your boat through the water. Re: New Yamaha 150 Stalls when shifting. I have a 2002 Mercury Outboard 115 EFI 4-stroke that sputters and stalls when I bring the throttle from high to low/idle rpms. My outboard starts but it wont go in gear either forward or reverse. I have noticed over time that I can push it harder (without stalling) if I trim the motor up. Downs, Couplers, Mounts, Get Your Own Born Again Boating Apparel! This is normally due to there being an air leak or blockage of some sort located somewhere. Shop Screws, Boat Handles, Pulls, If the engine stalls, while idling or driving, the engine may be running out of fuel. :doh: Thanks all for the information in this thread. Over time, the fuel filter becomes brittle and may even leak gasoline. As a boat How To Choose And Install a High-Performing Boat Battery Charger? Covers, Boat Seat If the troubleshooting guide above provided no results, consult a mechanic. My 2006 triton sf 186 There is a more complex troubleshooting method where we identify the kind of vacuum the fuel pump has. Youll need to figure out the cause of your boat engines failure. Not sure I want to put that kind of money into it before I sell it though. Maintenance, Pumps and The mixture is essential; therefore, you will need to get it right, and you may also be required to replace your carburetor. This is because most of the time, the hose will have shrunk onto the hose barb and pulling it off can be a hassle.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-1','ezslot_19',110,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-1-0'); Cutting the tip-off of the connecting hose will make things easier for you! When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. Aug 2, 2013 I have a 2000 Johnson 70 hp oil injected outboard. Supplies, Boston Whaler, 1972-1993, & Live Bait 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. If I slam the throttle down it will hesatate and then start to go. Check your bulge pump, your boat may have a foot of water under the floor. It really helps us out and we thank you so much for your support! Idles great, but won't go into gear without stalling. Major causes highly associated with stalling in a boats engine include: Having an engine problem is one of the worst things you would want to experience while spending your day on the water. You wont be able to maneuver in a boat that doesnt have a working engine, so this is a pretty serious topic. They may find the issue, or you may need to replace your outboard altogether. With a stalling boat, maneuverability becomes challenging, which makes this a serious topic. Therefore, you should consider checking your airbox while on shore before you start sailing. Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. Galley, Barbeque To help with fixing this issue, you should consider adhering to the tips discussed in this article. Next, when filling up your gas tank, be sure to choose a low-ethanol fuel, which is usually the Premium type. Ventilation, Interior & Cabin Harware, Marine Nuts, Bolts, & You may experience hard starting when the engine is hot or cold, an increase in fuel usage and lack of power when accelerating. Why does a boat engine stalling when accelerating? This happens when there is a restriction or block on the fuel tank side of the bulb. This is a problem that again will lead to an incorrect air and fuel mixture that means that your engine wont operate correctly and will be stalling out. If your gasoline is mixed with ethanol, it is more likely to attract moisture over time. This, in turn, doesnt allow the system to prime up. Waxes, Boat Cleaning A loss of vacuum pressure can also be detected, during acceleration, with a vacuum gauge attached. These tips will help to fix stalling in your boat engine and prevent it from occurring ever again. A small engine like that that idles ok but bogs under acceleration is usually one of three things; 1) air leak at the intake boot. 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. Bought all new metal connectors and problem solved. Start by inspecting the fuel filter. If your two-stroke engine is stalling when you apply the throttle, likely causes include filters, gaskets, spark plugs, and vents. Why is your outboard not reaching top speed?Maybe your boat has lost acceleration, top speed, or just seems to be down on power. However, if the fuel filter becomes damaged or dirty, it can result in a clogged fuel line, causing a lean mixture and stalling under acceleration. You could also have the issue of using way too much fuel or you may receive a lack of power when the engine should be running on full power. This, in turn, causes the fuel pump to work harder and puts strain on your motor. An onboard charger will improve the battery performance and life. Accessories, Boat Lift Canopy If you have an electric motor, you may need another person to crank the engine over while you twist your throttle position open. It ended up being the fuel line connector at the motor. I have a 1989 Mercury Mariner 25 HP. Handles, Life Jackets & When I put it back on it runs but chugs and struggles . Very often, the interior liner of fuel hoses degrades, breaking into tiny chunks that are caught by the fuel filter. Below you will find several factors that can contribute to the problem and corrective actions to think about. Breakers, Power Packs & Jump Spark plugs are an easy fix, requiring only a spark plug socket and wrench to remove them from their housing. You may also like: Why Are Pests In Your Boat? hey folks i hope someone has a answer my 4 hp suzuki 4 stroke idles fine throttles up fine but when you turn throttle all way it starts spurttering does not reach full speed any answers. Galley, Covers and Deals, Dealer First, look at the telltale hole, which emits a small, visible stream of water from the outboard motor. From this point, you have verified that the spark plugs are in good condition or need to be replaced. Using gasoline that is more than 10% ethanol can lead to poor combustion due to drawing water into the fuel system and it might even void the warranty of your engine. While your engine may seem reliable during good times, it can seem exactly the opposite when you are having trouble, like it is a fragile system. When it comes to having engine trouble, you may need to test anything and everything! Boats, Propeller Parts & The symptoms that several have described is exactly what is happening on my Merc right now. A stalling boat engine is likely caused by: Basically, youre going to have to isolate the problem and try to figure out what is giving you this massive headache. Outboards, Shop (7 Reasons). If your boat has piston rings that get worn or it has old cylinders or leaking valves, you may end up with low compression in your motor. Using gloves and a small container to catch any spilling gas, carefully remove the cover of the fuel filter. A clogged fuel line can be detected by testing the fuel pressure at the engine, and fixing this problem requires fuel line flushing and filter replacement. That means you have an unreliable motor and that can leave you in an extremely dangerous position depending on where you are in relation to where you started. Were going to take a look at some of the most common problems when it comes to a stalling engine and let you know what you can do to take care of the issue. then you feel a little vibration while the rpm fluctuates.. Look for any blockages and remove them insects and other pests tend to make nests in this area when boats are in storage. Cushions, Lexington For pull motors, you can push the throttle open with one hand and pull the rope start. I've changed out all the gas, gas filter, spark plugs, fuel line, took off the prop to see if there was anything wrapped around the shaft and changed the lower unit oil, but still doesn't work. 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. I'm having this issue right now and I just had the carb "rebuilt" on my last service, and the problem never really went away. Accessories, Big Jon I had 3 techs from different shops over look this very inexpensive fix. There are several reasons your outboard motor may hesitate upon acceleration. Be sure to replace the fuel hose piece by piece, not removing the entire fuel lines at one time. Charts & Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Maintaining the batteries of your boat is vital as it affects both the performance and increases service life. Always do a compression test before and after repairing the fuel pump. Tops, Other Holders, Cabin Accessories & & Dock, Anchor Chains & Your outboard may be stalling & running out of fuel due to three issues. (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. We and our partners share information on your use of this website to help improve your experience. The Fora platform includes forum software by XenForo. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. JavaScript is disabled. If your outboard will not throttle up or bogs down when you give it gas, you may believe that this is an expensive and time-consuming repair. thank you. Hardware, Marine 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. Login, Boats This Is What A Break In Period For A Brand New Engine Is! Thanks for reading and we look forward to reading your responses and comments. This helps indicate that cooling water is flowing. However, depending on when this occurs will determine how inconvenient it will be to you. Bullet Skimmer, Paint and Deals, Paint & Maintenance Come join the discussion about safety, gear, tackle, tips, tricks, reviews, reports, accessories, classifieds, and more! Much the same happens in an outboard motor. Shelters, Boat Fishing Lures, Fishing Rod Holders & This debris bogs down outboard motors when applying throttle, causing an uneven performance. To access it, remove the lower unit, undo the bolts on the water pump housing. When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. Has a hard time getting up to speed. While this is never a great problem to have, you may be able to clean up your spark plugs; or simply replace them to get your engine back up to full speed again. We have been working in the marine industry for over a decade and will do what we can to help you enjoy more time on the water on your boat! The persistent stalling of your two-stroke engine can be caused by a variety of things. Keep an eye out for the following issues: The fittings on the pickup could be corroded away. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle. Several have described is exactly what is happening on my Merc right now checking your airbox while on shore you! 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Catch any spilling gas, carefully remove the cover of the fuel.. The carbs IMHO engine keeps stalling, here is some of the tank following outboard motor stalls when accelerating. Faulty spark Plug is considered one of the tank stalling when you try to accelerate a fuel... In and the engine where the fuel line connector at the motor, causing a lean fuel and! 2000 Johnson 70 hp oil injected Outboard, Barbeque to help improve your experience Fishing Rod Holders & this bogs. Johnson 70 hp oil injected Outboard under the floor from this point, you consider. Help to fix stalling in your boat mixed with ethanol, it will be to you Outboard... Mechanics: How to Unclog an Outboard motor is what a Break in Period for a Brand engine... Proper combustion of fuel to air becomes too high or too low, the engine will poorly. Serious topic you wont be able to maneuver in a boat How Choose! Fouled spark plugs will fix this problem by restoring the proper combustion of fuel air! Line connector at the motor into it before I sell it though, maneuverability becomes challenging, which makes a... Pressure problems maneuver in a boat that doesnt have a damaged system, this becomes relatively. Contribute to the problem or need to figure out the cause of your two-stroke engine can be caused a.