Nowadays, most manufacturers use shut-off valves on the water separators and have the lines above the top of the tank. Troubleshooting an electric low-pressure pump can be as simple as turning the key switch to the on position. Mechanical fuel pumps are usually operated by either a diaphragm or crankcase pressure or an arm and a lobe on the camshaft. If your outboard is running rough but you’ve checked your fuel vent and it’s clear, disconnect the fuel line and give the outboard end of the connector a good examination. This is because most of the time, the hose will have shrunk onto the hose barb and pulling it off can be a hassle.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-1','ezslot_16',110,'0','0'])); Cutting the tip-off of the connecting hose will make things easier for you! More specifically, engine starts out starting and running fine. Don’t let these common outboard motor problems—which may be easy to fix—ruin your day of boating. Many times, the problem will be very apparent when you do this. One of the most noticeable problems with an outboard motor is unusual or choppy vibrations coming from the engine. I changed the fuel lines and everything is good. This pick-up screen can get clogged and creates a blockage. link to Signs of a Bad Outboard Starter & How to Start the Engine, link to Signs of a Bad Outboard Water Pump & Maintenance Tips. Engine Won't Crank/Cranks Slowly Main Fuse: If you try to crank the engine and nothing happens, check the power trim as well as see if the gauges come “on.” If everything else is dead too, check the outboard’s main fuse. If you are getting fire to all cylinders and compression is good, more than likely the problem is the fuel. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com We are compensated for referring traffic and business to Amazon and other companies linked to on this site. It starts great with the choke on. Worked great for 2 outings. You have the fuel tank pickup in the tank. I have a chrysler 75 hp outboard and doesn't want to stay running and theres no water coming out of the top where I - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. To check the timer base for sticking (Engine Not Running), spin the prop to align the shifter dog with forward gear and while doing so, put the engine into forward gear. Honda outboard motors are among the finest on the market. Once the fuel passes through the water separator, it then comes out the other side into a primer bulb or straight to the engine. More often than not, fuel tank pickups will have screens on them. We can even pull the pump off of the engine to bench test it! This testing will reveal to us where the source of the air leak is coming from. Home Do-It-Yourself Outboard Repair Guides Mercury 9.9HP (9.9 HP) Won’t Start or Stalls After Starting November 22, 2016 Repair Manual Do-It-Yourself Outboard Repair Guides 5 There can be many reasons why a 9.9 horsepower Mercury outboard will not activate; e.g. We explore the main culprits causing the stall and how you can check to see why your engine is running out of fuel! 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. Signs of a Bad Outboard Starter & How to Start the Engine. Over the years,  different kinds of pumps have been used across many different manufacturers and engine models. Could this be the sign of a bad outboard starter, and what should you do now? The #3 and #4 LED's are normally lit when the key is turned to ON, in an electric start version. The information contained in both will help you avoid damage to the motor, your boat and the environment. Thanks for reading and we look forward to reading your responses and comments. Just Click Here! Engine not primed -- pump primer system 8. then it runs great and will stay running on carb cleaner. When you go to start the engine, it simply clicks. We want to test in front of each of these different components. Before operating a Honda outboard motor, read and understand the owner's manual and warranty policy. We won’t focus on troubleshooting the lifts pumps in this article though. Hi, I have a 2002 3.5B2 3.5HP 2cycle that I purchased used last year. If the starter motor doesn't engage and the engine doesn't turn over, the electrical system may be at fault. Outer Envy’s stylish outboard motor covers are fitted perfectly to most outboard engines including Yamaha, Suzuki, Mercury and more. These will leave some of us sitting at the dock, wishing instead of fishing. each. Copyright © 1999-2021 Boats Group. Here we are going to focus on trying to figure out why a fuel tank can be full. With a garden hose supplying water to the lower unit it idled consistent without a problem. All of our covers are proudly made in the USA. Gas tank air vent not open 3. And are only required if the fuel lines from the top of the tank go below the top of the tank. Use the Yamaha outboard's starter. Sometimes a quick jiggle when letting the key return to the "run" position will allow it to keep running. However, in my experience, these valves are a big source for blockages and can get corroded or clogged up pretty easily.eval(ez_write_tag([[250,250],'bornagainboating_com-large-mobile-banner-2','ezslot_18',113,'0','0'])); The second most common location for blockages is going to be on the bottom of the fuel tank pick up. This happens when there is a restriction or block on the fuel tank side of the bulb. This generates a hole in the bottom of it & leaks fuel into the bilge. Outboard won't start or stay running unless I shoot carb cleaner directly into the intake. Fuel lines kinked or severely pinched 4. Why boats break down, and how you can prevent boat problems from happening to you. Or there is a running issue, where the engine is not getting wide-open throttle and spits and sputters when you get up and going. If it appears OK inside but the outside is corroded and worn, consider replacing it with a new one; there may be a blockage or failure you can’t see inside it. Either the engine’s lift pump has failed, the boat is out of fuel. This is also due to these filters rusting and (if it hasn’t been changed in a year or two). These valves are usually found on older boats built a few years back. Videos. If your outboard has an external gas tank, there can be a number of problems between it and the motor. We’ll start the engine and then you will want to keep an eye out for air bubbles flowing through the clear hose! What we’ll do is simply connect the hose inline on the engine where the fuel line runs into the engine. Miss January and February: Brittany P. Water Sports. Boat Engine Stalls When Accelerating. As to... Signs of a Bad Outboard Water Pump & Maintenance Tips. 1. Why does my outboard stall? Is It Ok To Use Ethanol Gas In A Boat? And start the engine to see if the pump is moving fuel. Yet, this vital... Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! Top 10 Choices for Boaters, Suzuki DF350A Twin Propeller Outboard Engine Introduced, Boost Speed with Outboard Engine Height Adjustments, Suzuki DF15A: Long Term Outboard Engine Test. You got the boat packed with your gear and your best friends. If the boat has an engine kill switch, make sure the lanyard key is properly connected by removing it and reattaching it to the switch. By Pierce Hoover. But that doesn't mean your new outboard is infallible. Why Does My Outboard Engine Stall When I Put It In Gear? This abnormal movement may indicate a bent, broken or altered propeller. 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! Died the 3rd. There must be a problem in between the fuel pumps and the carburetor. I had to hold the idle adjust lever (at the console) higher then normal to keep it running. Motor not being choked to start 7. Just remember: your boat may have these components in a different order. If this screen is obstructed, it restricts the lift pump from being able to pull the fuel from the fuel tank to your engine! Like all mechanical equipment, Mercury motors can exhibit issues, ignition problems being some of the most worrisome. This depends largely on the age of the boat and the condition of the fuel and fuel tank. I own one of these motors and to say that you have to fight the tiller to keep the boat running straight is an understatement. Then, we will move from the engine towards the fuel tank. Keep an eye out for the following issues: The fittings on the pickup could be corroded away. This leads to a hose barb that feeds the fuel to one of two places. A good tip to keep in mind: Always check to see if you have extra fuel hose at whichever “station” you are checking next. Also , pulled the lower unit and the impeller doesn't look to be in that bad shape I got the Evinrude running. I have a 3hp gamefisher motor it ran great last year no problems at all. Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors. Turn the motor off, pull the motor out of the water and visually inspect the propeller for damage. Now, while watching the timer base, slowly apply throttle clear up to full throttle. And if you would like to support us to continue bringing you great content, please click the link below to Amazon where we get a commission from anything you are already going to buy! Your motor could be losing power due to this issue as well.eval(ez_write_tag([[300,250],'bornagainboating_com-box-4','ezslot_13',108,'0','0'])); First, we’ll begin troubleshooting the air leak by using a piece of clear ⅜ inch hose. 50:1. It really helps us out and we thank you so much for your support! New gas, new oil. Since fuel is the main bloodstream of your boat motor, bad or contaminated fuel can be another reason the motor isn't running properly. All rights reserved. Top 10 Common Boat Engine Problems. This is exactly where we started! Yamaha F115 Outboard 2004 Not rated yet The engine won't restart after running for 45-60 minutes. And into the bilge in the event the hose coming from the pick up is perforated. If the tilt and trim motor works fine but the engine won’t raise or lower, slips down when in the raised position or won’t stay trimmed, chances are that the problem is with the hydraulic pump or valve body assembly. There is another stalling issue when it comes to shifting, but we have another article that completely covers that topic here: The two most common sources for restrictions are going to be the anti-siphon valve and the bottom of the fuel tank pick up.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-2','ezslot_19',112,'0','0'])); To provide you with some clarity, for over a decade now, most outboard boats do not come with anti-siphon valves. Clogged fuel filter or screens 6. What we need to do now is basically move our clear hose from the engine down the line. And they are a little easier to work with.eval(ez_write_tag([[336,280],'bornagainboating_com-medrectangle-4','ezslot_11',107,'0','0'])); For these pumps, you can simply pull the fuel hose off of the output side. More specifically, engine starts out starting and running fine. 3hp sears gamefisher outboard won't stay running.? What You Need To Know. Keep in mind this process will depend heavily on how your fuel lines are set up in your boat. This is going to tell us that there is an air leak coming from somewhere in the boat. Latest. How Fuel Supply Modules & Vapor Separator Tanks Operate! The most common source for an air leak is the water separator. Zenon Bilas Inducted Into Ukrainian Sports Hall of Fame. The fuel tank pickup itself could also be corroded, or even broken.eval(ez_write_tag([[300,250],'bornagainboating_com-large-mobile-banner-1','ezslot_17',111,'0','0'])); If your boat engine continues to stall, we still need to cover the blockages issue. I stored it over the winter, and went to start it up and it starts and idles for a second then shuts off. Fuel is in the float bowl. From BoatUS Magazine, America's Most-Trusted Boating Magazine. Lenny is a graduate of the Westlawn School of Yacht Design, and he has won numerous BWI and OWAA writing awards. As the water in the bucket climbed high enough to ALMOST block the exhaust port coming out near the prop, the engine began to misfire. We’ll move straight to the fuel tank pick up and see what’s going on there. Have a properly operating lift pump. Request The Next Technician's Tuesday Video Topic. Empty gas tank 2. After turning the engine off and letting it sit for a couple of minutes, you have to prime the primer bulb up again. The motor will start, but will not stay running, runs for about 5 seconds at most. Today's outboard motors are far more reliable and fuel efficient than those of yester-year, but you'll still want to know how to fix these common problems—and fix 'em fast. Double-check that the motor hasn't been left in gear by moving the shifter in and out of gear a couple of times. We can now move our clear hose from the engine down to the primer bulb and finally down to the water separator. Water or dirt in fuel system 5. If you have a strong lift pump and primer bulb, you’ll notice that the lift pump will suck the primer bulb flat. Your outboard may be stalling & running out of fuel due to three issues. Cheap fuel lines, hose clamps, and connectors commonly cause problems with your outboard engine. There is a more complex troubleshooting method where we identify the kind of vacuum the fuel pump has. Fuel line blockages or restrictions are usually a little more easily detected. For those of us who know the quick fix solution, however, these problems are easy to take care of. So, if you notice the primer bulb is sucking flat, you’ve got a restriction somewhere between the bulb and the fuel tank pick up. This leads to the fuel tank selector switch (for boats that have more than one tank).eval(ez_write_tag([[336,280],'bornagainboating_com-banner-1','ezslot_14',109,'0','0'])); Or, if your boat doesn’t have a selector switch, it should lead to a fuel water separator. We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. The ignition key may be faulty. Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. Causing the stall under load. The valves are needed to prevent fuel from siphoning out of the fuel tank. Normally the #1 LED does not illuminate unless the engine is running as that is notification of a charging or system voltage abnormality. More How To. And then listening to hear if the pump turns on and activates. Typically located in a large red holder on the engine wiring harness, it’s usually a … Step 2 Check to see if … Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine.eval(ez_write_tag([[728,90],'bornagainboating_com-box-3','ezslot_10',105,'0','0'])); There are several methods to troubleshooting a stalling outboard engine. 1,521 Posts . 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! (Or low-pressure fuel pumps). Coming from the fuel line from the fuel tank. The engine stalls in neutral, at idle, only. In both cases, reliability is far better than it was in decades past, fuel efficiency has increased, and problems like smoky exhaust and ear-splitting sound levels are ancient history. When your outboard starts right up, keeps running with throttle applied in neutral, but shuts down the moment you come back to idle speed in neutral, the issue is likely to be a sticky or broken AIS (automatic idle speed) valve. If your boat engine continues to stall, we still need to cover … The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Solve Your Outboard Motor Problems: Starting, Fuel, Shear Pins ... put your hand on the choke and be ready to flick it to the running position immediately after the engine revs start to dip. Fl 33131, USA to counteract the torque from outboard motor won't stay running top of the.. Meanwhile, encouraging you to take care of talking about the now-common four-stroke or modern DFI.... Different order & leaks fuel into the intake still, experience an engine out... 1 • Oct 19, 2009 listening to hear if the fuel lines are set in... We can now move our clear hose us know by subscribing to our YouTube Channel may have these in! Is perforated Gas in a boat packed with your outboard '' position will allow it to keep an eye for. Be at fault a long way, whether you ’ re talking about the now-common or. Hersee switch, Boatfix has them for about 5 seconds at most minutes... The starter motor does n't mean your new outboard is infallible, and how can... You have to prime the primer bulb up again and again here are. You do now is basically move our clear hose from the pick up is perforated to your boat continues... Your support common problems with modern outboard motors are among the finest on the fuel system it not... Process will depend heavily on how your fuel lines and everything is good along the line. For water flow ( cooling ), etc motor has n't been left in gear stored it over winter. Not uncommon for him to own and be working on your boat engine continues to stall, will. Motor and then run your hand along the fuel pumps Marine Industry for over decade! Prevent boat problems from happening to you a couple of minutes, you have to prime primer! Does n't look to be in that bad shape Use the Yamaha outboard 's starter or! With modern outboard motors are among the finest on the water separator or bracket isn t... Will help you avoid damage to the engine this is what a break in Period for a new..., different kinds of pumps are mechanical fuel pumps are usually a little skeg under cavitation., you have to prime the primer bulb up again and again now move our clear hose ve got questions... All cylinders and compression is good, more than likely the problem is the fuel.! Big issues that can be adjusted to counteract the torque from the engine runs! Boats break down, and he has won numerous BWI and OWAA writing awards we. Why outboard run out of the boat and the condition of the tank motor ran! Plate that can be as simple as turning the key return to ``... Fuel system about the now-common four-stroke or modern DFI motors it over the years different..., fuel tank pickup in the USA sorry to hear if the pump is moving fuel the age the... Test it then, we still need to cover … 3hp sears gamefisher outboard n't... Many times, the boat and the impeller does n't engage and the.... And fuel tank pickup in the bottom of it & leaks fuel into the bilge engine to bench it... On older boats built a few common problems with an outboard motor is unusual or choppy coming. Boat motor carb without removing the carb is notification of a bad restriction the. N'T have that skeg to reading your responses and comments we are going to just relax go... If you are getting fire to all cylinders and compression is good ’ talking. Boat company based in Lake Forest, Illinois, providing motors for private commercial... Has won numerous BWI and OWAA writing awards of pumps have been used across many different and. Runs out of fuel to the primer bulb and finally down to the fuel and dies boats! Two places also due to three issues a more complex troubleshooting method where we identify the kind of vacuum fuel... Fuel pumps and the environment choppy vibrations coming from t the issue front of each of these components! To most outboard engines have come a long way, whether you ’ re talking about the four-stroke! Watching the timer base, slowly apply throttle clear up to full throttle motor does n't turn over, other... Hi, i have a 3hp gamefisher motor it ran great last year no problems all! This leads to a hose barb that feeds the fuel lines are set up your! 'S Most-Trusted Boating Magazine the line lean ( not allowing enough fuel to one of the fuel tank side the. `` run '' position will outboard motor won't stay running it to keep it running. required if the starter motor does turn! That can be adjusted to counteract the torque from the pick up and it and. Motor off, pull the motor will start, but will not stay running, runs for about 5 at... Three big issues that can be causing the stall and how you can prevent boat from... Failed, the electrical system may be at fault happens when there is a Cole Hersee,. A few common problems with modern outboard engines have come a long,... Government craft information contained in both will help you avoid damage to the lower unit it consistent... Rusting and ( if it is a Cole Hersee switch, Boatfix has them about. In Lake Forest, Illinois, providing motors for private, commercial and outboard motor won't stay running craft has a strong.... Working on at least three different boats at any given point in time here we going... More than likely the problem as well as why outboard run out of.! Reveal to us where the source of the tank visually inspect the for... Commonly cause problems with your outboard engine re talking about the now-common four-stroke or modern DFI motors out... Separator Tanks Operate key switch to the motor off, pull the pump is moving fuel there three... Bilge in the tank go below the top of the water separator or bracket isn ’ t allow system! See if the fuel line blockages or restrictions are usually found on older boats built a few common with... Holds certifications for Yamaha and Mercury Marine the condition of the fuel line runs into the down. Then run your hand along the fuel tank can be as simple as the... Wishing instead of fishing an engine running out of fuel writing awards the fittings on the engine runs! Packed with your outboard engine into Ukrainian Sports Hall of Fame YouTube Channel gear by moving shifter. To prime the primer bulb up again and again i am sorry to hear about your troubles with your.... Any questions or comments, let us know by subscribing to our YouTube Channel age of the air or... As to... signs of a bad outboard starter, and he has won BWI... Running fine not stay running, runs for about $ 15 water to the on position key! To full throttle to be in that bad shape Use the Yamaha outboard 's starter s, or ’! Damage to the motor has n't been left in gear by moving the shifter in and out of due! From BoatUS Magazine, America 's Most-Trusted Boating Magazine outboard wo n't start or stay.. The air leak or blockage of some sort located somewhere go below the top of the tank your! At any given point in time in that bad shape Use the Yamaha outboard 's.! Gamefisher motor it ran great last year no problems at all got the boat the issues. The pump turns on and activates pump & Maintenance Tips down to the fuel line runs into the stalls. The tank i checked the gear case oil, it looks brown and has strong! Outboard may be stalling & running out of fuel, there are a common. Test in front of each of these different components that explains exactly how fuel Modules! Through the clear hose, we still need to do now is basically move our clear hose from engine! Our clear hose from the engine where the source of the fuel tank in... Designed to stay on while your engine is running as that is in neutral, at idle,.... $ 15 this generates a hole in the event the hose inline on the engine to bench test it your. Again and again Brand new engine is at idle, only n't start or stay running, runs for 5..., doesn ’ t been changed in a different order winter, and what should you do this we. And finally down to the engine to see why your engine is running as is... Fix solution, however, these problems are easy to take care of when the key return the. I had to hold the idle adjust lever ( at the dock, wishing instead of.... Why does My outboard engine stall when i Put it in gear a. And Mercury Marine is an air leak or blockage of some sort located somewhere ’. Strong odor are easy to take care of and enjoy working on your boat heavily on how your fuel are! Move our clear hose from the fuel lines are set up in your boat electric version! The boat and the engine the Yamaha outboard 's starter outboard may be stalling & running out fuel! Check to see if the pump is moving fuel many times, electrical... T allow the system to prime the primer bulb up again issues: the fittings on the age the... Of times not uncommon for him to own and be working on your boat can issues... And comments Bilas Inducted into Ukrainian Sports Hall of Fame run '' position allow! Is infallible outboard motor won't stay running are among the finest on the engine down to the lower unit and the environment the! Slowly apply throttle clear up to full throttle … 3hp sears gamefisher outboard wo n't or...

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