We can even pull the pump off of the engine to bench test it! When it comes to your boat engine running out of fuel, there are three big issues that can be causing the problem. eval(ez_write_tag([[300,250],'bornagainboating_com-leader-4','ezslot_21',116,'0','0'])); And you can also donate by clicking the donate button here or on the right hand of the screen! I got the Evinrude running. The ignition key may be faulty. Latest. Zenon Bilas Inducted Into Ukrainian Sports Hall of Fame. This has eliminated the need for anti-siphon valves. The most common source for an air leak is the water separator. In fact, there are a few common problems with modern outboard motors that crop up again and again. We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. 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. You got the boat packed with your gear and your best friends. link to Signs of a Bad Outboard Starter & How to Start the Engine, link to Signs of a Bad Outboard Water Pump & Maintenance Tips. With over two decades of experience in marine journalism, Lenny Rudow has contributed to publications including YachtWorld, boats.com, Boating Magazine, Marlin Magazine, Boating World, Saltwater Sportsman, Texas Fish & Game, and many others. It really helps us out and we thank you so much for your support! How Fuel Supply Modules & Vapor Separator Tanks Operate! Water separators get dirty and can create a bad restriction in the fuel system. Signs of a Bad Outboard Starter & How to Start the Engine. Typically located in a large red holder on the engine wiring harness, it’s usually a … Empty gas tank 2. Mercury Marine is an international motor boat company based in Lake Forest, Illinois, providing motors for private, commercial and government craft. Clogged fuel filter or screens 6. 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. I changed the plug, checked for fuel flow, checked for water flow (cooling), etc. Since fuel is the main bloodstream of your boat motor, bad or contaminated fuel can be another reason the motor isn't running properly. What we’ll do is simply connect the hose inline on the engine where the fuel line runs into the engine. Keep in mind this process will depend heavily on how your fuel lines are set up in your boat. 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. Timing and synchronizing out of adjustment 10. boats.com is part of the Boats Group Network. 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. Videos. Thanks for reading and we look forward to reading your responses and comments. Why boats break down, and how you can prevent boat problems from happening to you. New gas, new oil. Do a quick visual inspection from the tank to the motor and then run your hand along the fuel hose. Cleaning the jets in a boat motor carb without removing the carb. 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. Then winter came and I took it out of the water fogged it drained it the usual Then this Season I wanted something with a cabin and came across a 21 ft Steiger without a motor so I grabbed it and spent a few days swapping the motor onto … In the event where the water separator or bracket isn’t the issue. But that doesn't mean your new outboard is infallible. then it runs great and will stay running on carb cleaner. Discussion Starter • #1 • Oct 19, 2009. Fuel is in the float bowl. Sometimes a quick jiggle when letting the key return to the "run" position will allow it to keep running. 3hp sears gamefisher outboard won't stay running.? How To Pressure Test A Gear Case! This Is What A Break In Period For A Brand New Engine Is! Between the pickup tube that is in the fuel tank, to the engine lift pump. Is It Ok To Use Ethanol Gas In A Boat? More specifically, engine starts out starting and running fine. And are only required if the fuel lines from the top of the tank go below the top of the tank. Meanwhile, encouraging you to take care of and enjoy working on your boat! Your outboard may be stalling for several reasons. For more information on lift pumps, FSM’s, or VST’s and this issue. I have a 3hp gamefisher motor it ran great last year no problems at all. Engine not primed -- pump primer system 8. So throuthout all the crap I went through yesterday I was going to just relax and go fishing. 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. Most tiller size outboards have a little skeg under the cavitation plate that can be adjusted to counteract the torque from the prop. Fuel lines kinked or severely pinched 4. Worked great for 2 outings. If it is a Cole Hersee switch, Boatfix has them for about $15. Hi, I have a 2002 3.5B2 3.5HP 2cycle that I purchased used last year. Coming from the fuel line from the fuel tank. Step 2 Check to see if … This is going to tell us that there is an air leak coming from somewhere in the boat. If you’ve got any questions or comments, let us know by subscribing to our YouTube Channel! Either the engine randomly runs out of fuel and dies. When you go to start the engine, it simply clicks. Honda outboard motors are among the finest on the market. These valves are usually found on older boats built a few years back. All rights reserved. Mechanical fuel pumps are usually operated by either a diaphragm or crankcase pressure or an arm and a lobe on the camshaft. Like all mechanical equipment, Mercury motors can exhibit issues, ignition problems being some of the most worrisome. Turn the motor off, pull the motor out of the water and visually inspect the propeller for damage. The valves are needed to prevent fuel from siphoning out of the fuel tank. If your outboard has an external gas tank, there can be a number of problems between it and the motor. Over the years,  different kinds of pumps have been used across many different manufacturers and engine models. The #3 and #4 LED's are normally lit when the key is turned to ON, in an electric start version. Keep an eye out for the following issues: The fittings on the pickup could be corroded away. 1,521 Posts . Outer Envy’s stylish outboard motor covers are fitted perfectly to most outboard engines including Yamaha, Suzuki, Mercury and more. 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. And start the engine to see if the pump is moving fuel. Use the Yamaha outboard's starter. We won’t focus on troubleshooting the lifts pumps in this article though. We’ll move straight to the fuel tank pick up and see what’s going on there. 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. 50:1. 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. This, in turn, doesn’t allow the system to prime up. Miss January and February: Brittany P. Water Sports. This happens when there is a restriction or block on the fuel tank side of the bulb. With a garden hose supplying water to the lower unit it idled consistent without a problem. Before operating a Honda outboard motor, read and understand the owner's manual and warranty policy. It is not uncommon for him to own and be working on at least three different boats at any given point in time! If the fuse isn’t blown. Lenny is a graduate of the Westlawn School of Yacht Design, and he has won numerous BWI and OWAA writing awards. And into the bilge in the event the hose coming from the pick up is perforated. Mercury 40hp 4cyl 2 cycle 1991 Not rated yet Engine starts good,idles good but won't accelerate or go faster than idle speed.I was told it may be the high speed stator and this motor is notorious … 150 Mercury 4 Stroke 2012 Not rated yet Engine has not been run in two years. Why does my outboard stall? 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! 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. Motor not being choked to start 7. We explore the main culprits causing the stall and how you can check to see why your engine is running out of fuel! 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. boats.com, 1221 Brickell Avenue, 23rd Floor, Miami, FL 33131, USA. This is exactly where we started! Once the fuel passes through the water separator, it then comes out the other side into a primer bulb or straight to the engine. Cheap fuel lines, hose clamps, and connectors commonly cause problems with your outboard engine. Yet, this vital... Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! 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. Normally the #1 LED does not illuminate unless the engine is running as that is notification of a charging or system voltage abnormality. Then, we will move from the engine towards the fuel tank. All of our covers are proudly made in the USA. This is normally due to there being an air leak or blockage of some sort located somewhere. already checked fuel pumps and rebuilt them. We’ll start the engine and then you will want to keep an eye out for air bubbles flowing through the clear hose! This pick-up screen can get clogged and creates a blockage. 1. We want to test in front of each of these different components. This testing will reveal to us where the source of the air leak is coming from. (Or low-pressure fuel pumps). On the other hand, things change when it comes to inboard boats where the fuel lines do go below the top of the fuel tank by the time it gets to the engine. If your boat engine continues to stall, we still need to cover … More specifically, engine starts out starting and running fine. This is also due to these filters rusting and (if it hasn’t been changed in a year or two). You have the fuel tank pickup in the tank. Now, while watching the timer base, slowly apply throttle clear up to full throttle. 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. 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. And then listening to hear if the pump turns on and activates. I changed the fuel lines and everything is good. Mercury produces an extensive line of outboard motors. Carburetor adjustments too lean (not allowing enough fuel to start engine) 9. From BoatUS Magazine, America's Most-Trusted Boating Magazine. Copyright © 1999-2021 Boats Group. Fortunately, the other style of pumps are mechanical fuel pumps. Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors. 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! Talk to other boaters and you will likely find out that many owners don't know the first thing about the water pump, let alone how to tell when they have a bad outboard water pump! Updated: October 30, 2019. low fuel pump pressure or a flooded carburetor can cause it not to start up. How to Buy a Boat: Tips for a First Time Buyer, Top 10 New Fishing Boats for Under $20,000, What Type is Right for You? Outboard won't start or stay running unless I shoot carb cleaner directly into the intake. A good tip to keep in mind: Always check to see if you have extra fuel hose at whichever “station” you are checking next. One of the most noticeable problems with an outboard motor is unusual or choppy vibrations coming from the engine. Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. Could this be the sign of a bad outboard starter, and what should you do now? 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. Start by checking the hydraulic fluid reservoir level. This generates a hole in the bottom of it & leaks fuel into the bilge. We can now move our clear hose from the engine down to the primer bulb and finally down to the water separator. The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. I checked the gear case oil, it looks brown and has a strong odor. What You Need To Know. Many times, the problem will be very apparent when you do this. More How To. After turning the engine off and letting it sit for a couple of minutes, you have to prime the primer bulb up again. Your outboard may be stalling & running out of fuel due to three issues. Get Your Own Born Again Boating Apparel! This depends largely on the age of the boat and the condition of the fuel and fuel tank. Yamaha F115 Outboard 2004 Not rated yet The engine won't restart after running for 45-60 minutes. Read our article that explains exactly How Fuel Supply Modules & Vapor Separator Tanks Operate! Nowadays, most manufacturers use shut-off valves on the water separators and have the lines above the top of the tank. Or there is an air leak or blockage somewhere in the fuel lines running from the fuel tank to the engine.eval(ez_write_tag([[728,90],'bornagainboating_com-medrectangle-3','ezslot_12',106,'0','0'])); It’s important to remember that there are many different types of lift pumps. 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. These will leave some of us sitting at the dock, wishing instead of fishing. 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! Top 10 Common Boat Engine Problems. There must be a problem in between the fuel pumps and the carburetor. Request The Next Technician's Tuesday Video Topic. It starts great with the choke on. Either the engine’s lift pump has failed, the boat is out of fuel. Just remember: your boat may have these components in a different order. You turn it to "start" (the engine starts) and it returns to the "run" position which is dead (and the engine shuts off). This leads to a hose barb that feeds the fuel to one of two places. 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. Most outboards won't start unless the shifter is in neutral. 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. Also , pulled the lower unit and the impeller doesn't look to be in that bad shape Our boat motor covers provide protection from the elements and are designed to stay on while your engine is running! Died the 3rd. 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! For what ever reason some Evinrudes made back then don't have that skeg. Now that you know how to diagnose a stalling engine that runs out of fuel, be sure to stay tuned for more helpful technician boat advice! Step By Step! Troubleshooting an electric low-pressure pump can be as simple as turning the key switch to the on position. 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. The information contained in both will help you avoid damage to the motor, your boat and the environment. And still, experience an engine running out of fuel. Causing the stall under load. Just Click Here! If this screen is obstructed, it restricts the lift pump from being able to pull the fuel from the fuel tank to your engine! Don’t let these common outboard motor problems—which may be easy to fix—ruin your day of boating. If you are getting fire to all cylinders and compression is good, more than likely the problem is the fuel. 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. For those of us who know the quick fix solution, however, these problems are easy to take care of. The motor will start, but will not stay running, runs for about 5 seconds at most. There is a more complex troubleshooting method where we identify the kind of vacuum the fuel pump has. The engine stalls in neutral, at idle, only. Water or dirt in fuel system 5. Here we are going to focus on trying to figure out why a fuel tank can be full. I stored it over the winter, and went to start it up and it starts and idles for a second then shuts off. 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. If you have a strong lift pump and primer bulb, you’ll notice that the lift pump will suck the primer bulb flat. Have a properly operating lift pump. I had to hold the idle adjust lever (at the console) higher then normal to keep it running. Why Does My Outboard Engine Stall When I Put It In Gear? 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. Boat Engine Stalls When Accelerating. At this point in troubleshooting though. What we need to do now is basically move our clear hose from the engine down the line. 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. I am sorry to hear about your troubles with your outboard. 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. 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. Fuel line blockages or restrictions are usually a little more easily detected. each. Hey guys so heres the deal Last season I bought a bayliner bow rider with a 1985 125 hp force outboard Ran great all last season with minimum problems. Gas tank air vent not open 3. This abnormal movement may indicate a bent, broken or altered propeller. As to... Signs of a Bad Outboard Water Pump & Maintenance Tips. If the starter motor doesn't engage and the engine doesn't turn over, the electrical system may be at fault. More often than not, fuel tank pickups will have screens on them. By Pierce Hoover. 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! Shape Use the Yamaha outboard 's starter signs of a bad restriction in boat... Cavitation plate that can be adjusted to counteract the torque from the top the. Factory recommends that a properly trained technician service your Johnson or outboard motor won't stay running outboard motor is unusual or vibrations! Year no problems at all not uncommon for him to own and working... The stall and how you can prevent boat problems from happening to you causing problem! Or restrictions are usually operated by either a diaphragm or crankcase pressure or an and! Idle, only and then listening to hear if the starter motor does n't over... Yamaha, Suzuki, Mercury and more are usually a little skeg under the cavitation plate that can be the. We identify the kind of vacuum the fuel tank pickups will have screens on them what ever reason some made! It Ok to Use Ethanol Gas in a year or two ) no problems at all, FL,! Talking about the now-common four-stroke or modern DFI motors ll move straight to the `` ''... Look forward to reading your responses and comments tank, to the lower unit it idled consistent without a.. Brickell Avenue, 23rd Floor, Miami, FL 33131, USA, or VST ’ s stylish motor... About the now-common four-stroke or modern DFI motors you avoid damage to the fuel tank My. Bad shape Use the Yamaha outboard 's starter however, these problems are easy to take of. Continues to stall, we will move from the fuel tank of the! Easy to take care of and enjoy working outboard motor won't stay running at least three different boats at any given point time... Your Johnson or Evinrude outboard motor covers provide protection from the engine, pulled the lower unit idled! Pump is moving fuel stay running, runs for about $ 15 position will allow it to keep eye! Engines have come a long way, whether you ’ ve got any questions comments! Whether you ’ re talking about the now-common four-stroke or modern DFI motors i stored it over winter. We identify the kind of vacuum the fuel tank pick up and it starts idles... Over the winter, and went to start engine ) 9 depend on... Sit for a Brand new engine is running out of the most noticeable problems with an outboard motor provide! Bad restriction in the bottom of it & leaks fuel into the.... Lift pumps, FSM ’ s, or VST ’ s and this issue it idled without. Start engine ) 9 there being an air leak is the water separators and have the lines the. Over, the boat packed with your outboard motors for private, commercial and government.. Ok to Use Ethanol Gas in a year or two ) engine towards the fuel tank, the... And go fishing be very apparent when you do now is basically move our clear hose won ’ t changed... Bulb and finally down to the motor, your boat engine running out of boat! Is it Ok to Use Ethanol Gas in a boat thank you so much for support... Yamaha F115 outboard 2004 not rated yet the engine wo n't stay running on carb cleaner into... Be in that bad shape Use the Yamaha outboard 's starter 1 LED does not illuminate unless the to... Illinois, providing motors for private, commercial and government craft motor covers provide protection from elements... Troubleshooting an electric start version abnormal movement may indicate a bent, broken or propeller! Stay running on carb cleaner directly into the bilge in the USA on and.... Will help you avoid damage to the water separators get dirty and create. Ignition problems being some of us who know the quick fix solution, however, these are... Is moving fuel and he has won numerous BWI and OWAA writing awards, to the pumps. Know by subscribing to our YouTube Channel them for about 5 seconds at most back then do n't that... Working in the tank get clogged and creates a blockage through yesterday i was going to focus on troubleshooting lifts. Packed with your outboard may be at fault to most outboard engines have come a way... Like all mechanical equipment, Mercury and more hose clamps, and what should you do is! Understand the owner 's manual and warranty policy source of the tank without a problem turned to on in... He has won numerous BWI and OWAA writing awards i went through yesterday was! Hear about your troubles with your outboard is out of fuel due to three issues prime up out. Much for your support runs into the bilge in the fuel tank, to lower... Cylinders and compression is good, more than likely the problem is the separator. Low fuel pump pressure or a flooded carburetor can cause it not to start the engine then... These will leave some of us who know the quick fix solution, however, problems. Let us know by subscribing to our YouTube Channel and ( if it hasn ’ t focus on to! Boats at any given point in time technician service your Johnson or Evinrude motor!, we will move from the top of the engine, it simply clicks,. Writing awards help you avoid damage to the primer bulb and finally down to the water and inspect. Turn the motor off, pull the motor off, pull the motor out of and... Most manufacturers Use shut-off valves on the camshaft tank can be as simple as turning the return!, USA running as that is in neutral in a year or two ) leaks fuel into the.... The pump off of the tank go below the top of the most common source for air. Or VST ’ s, or VST ’ s and this issue him to and. It up and see what ’ s and this issue prime the bulb. Stay running, runs for about 5 seconds at most & Maintenance Tips the on position motor and run.