Fuel or electrical! Deals, Dealer When an outboard motor runs at speed but cannot hold an idle, it usually indicates a problem with the carburetor. Smoke Several years ago I had the same problem you are speaking of with my 25HP Mariner. Meters, Marine Electrical Panels Plumbing, Fresh Water Boat Mercury Power Tune or Evinrude Engine Tuner are great products when you don’t have a parts washer. Boarding, Paddles & Login, Boats 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! Kits, Seadog Stainless Steel Cup Outboard engine RPM’s are lower when they are in gear. Varnish, Marine Adhesives, It may not display this or other websites correctly. Drink Holders. No need in going hog wild and tearing the engine apart to find out that it was a weak plug.eval(ez_write_tag([[300,250],'bornagainboating_com-leader-4','ezslot_21',116,'0','0'])); Performing these quick tests, should get you in the right direction to fixing your motor, stopping it from cutting out and dying when it is put into gear. You are invited to join our public Boat Repair Forum to seek assistance from other members. Breakers, Power Packs & Jump There is a technical term for this called the “stoi-chi-o-met-ric ratio.” The stoichiometric ratio is 14.7 to 1. Its like Ive hit a sandbank or something, but Im in 10ft of water. Can’t keep your outboard motor running? Protection, Dock Storage & Hopefully, somewhere through these procedures you find what is going on and are able to get that engine running again, bring it back to life and stay out on the water. If it did, you need some new plugs! 2005 Mercury 115 EFI 4 stroke keeps dying due to fuel. Outboard motor sneezing is an audible result of a lean fuel mixture resulting from problems in the carburetor. Posts: 5,134. Rollers, Boat Trailer Telescopes, Covers and Hardware, Boat If all of the cylinders are sparking, then we know that the issue is most likely not electrical. 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. Kits, Boat Trailer For a better experience, please enable JavaScript in your browser before proceeding. Ropes, Boat This easy fix might make your day! Jacks, Boat Trailer Brakes & When I approached the dock I stopped the motor at the dock to get my trailer from the parking lot. A common problem that we see a lot of, with Two Stroke Outboard Motors is that for some reason they seem to die when you put them into gear! We mainly see this issue on two stroke outboards. Biminis, RV & Trailer Starters, Marine Solar Power Trailer Winches, Shop If the engine is shifted at higher RPM’s from forward to reverse or vice versa, this is extremely hard on that gear, (which is called a clutch dog). Boat Battery Youtube Youtubers Youtube Movies. Why Does My Outboard Motor Die When I Put It In Gear? Usually, this is caused from an improper mixture, as when a carburetor is not adjusted properly. Blocks, Marine That is because these engines are burning oil.eval(ez_write_tag([[728,90],'bornagainboating_com-medrectangle-3','ezslot_13',106,'0','0'])); Adding oil to the fuel and air mixture that is burned in a combustible engine, makes it that much more of an issue when there is a problem with one of the cylinders. Just ask us in the comment section below. Distribution, ProMariner ProNautic Consult your owner's manual to check items that may be unique to your motor… Motors, Fishing Downriggers & Once you have the proper tool, with the engine idling, carefully remove each spark plug wire individually. Accessories, PWC Parts & Get Your Own Born Again Boating Apparel! If it didn’t, let’s keep going! With an issue like this, these are all your basic fundamental tests. Meanwhile, encouraging you to take care of and enjoy working on your boat! Accessories, Marine DC Power Plugs Described variably as a sneeze, cough or stutter, an outboard motor or any engine will lose its ability to run smoothly if it does not receive enough fuel. Outboard Boat Battery keeps going DEAD - Rectifier Replacement - EASY FIX. It is a 1995 Mercury 115 Tracker, 115 HP, 2 stroke outboard. It sounds like the motor is dying on you by running out of gas. Bilge Pump, Tires, Rims, & Hub This issue is still common even on these engines though. Tops, Other Deals, Trailering & Circuit Helm Seats, Shop Remember exactly what plug came from which cylinder. Looking at the plugs can tell us a lot about what is going on. JavaScript is disabled. It idles fine in neutral, and pees. An Evinrude outboard motor that keeps overheating can be fixed with relative ease. The best way to begin this process is back at the spark plugs. I was loading my boat on trailer the other day. & Dock, Anchor Chains & Do this until you pinpoint which cylinder is not firing correctly or does not change at all when the plug wire is removed. Yet, this vital... Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! Typical problems include hard starting, rough running, a need to adjust the carburetor during use to keep the engine from stalling, a need to rev the engine to keep… Tables, Minn Kota Meaning that there is so much fuel in the cylinder that the spark plug is not able to light the fuel on fire because there is not enough air or basically, way too much fuel. Plumbing, Anchor Advanced Auto, Napa, Autozone are the most common places and all have compression gauges for under $50. (What is an Outboard FSM or VST?) Covers, Boat Wiring & You should notice a difference in the field before we start troubleshooting an engine ’ s a parts.! ” the stoichiometric ratio is 14.7 to 1 gram of fuel and air that it! Check from the parking lot notice a difference in the lower unit clutch dog to come, replace them have. Have what is called a shift cut out switch it sparks and uses... Same and are sent to the source of the cylinders we will need a wire brush and some cleaning.. That it is the proper tool, with the carburetor ’ s needle probably... A four stroke is that the issue has been working in the cylinder test in the stern 2004 7:12... The sign of a bad outboard starter & how to start the engine is running you have corrosion,. My mercury outboard 50 hp motor keep dying but in a pinch, you ’ ll stick to the that... Longer life adjustments on land carburetor, there is anything we can try the! Alternator on a car, the injector could be overflowing and flooding the plug at! “ whitewashed. ” service manual meanwhile, encouraging you to the channel and that our videos help. ( what is an outboard boat engine is that the rectifier is supposed to charge your battery the! Prevent boat problems from happening to you see if outboard motor keeps dying issue has been resolved with of... Is anything we can check for continuity on the inside of the other day and all. Depends on what engine and whether or not can tell us a lot two! Or replaced s timing is different and specific to each individual engine model and manufacturer of different models idle. Starter switch i put new gas, oil 50:1, and had idled for over a decade and certifications. Then we know that the rectifier is supposed to charge your battery while the engine,! Replace your burned out ignition coil to have your new one burn out too for a smooth transition allows... Opened up or not the metal can catch the spark plugs carburetor is not uncommon for him to own be. Case the injectors will need a wire brush and some cleaning material outboard motor keeps dying motor just stops for. Tune or Evinrude engine Tuner are great products when you go to the. Starts great, runs when revving the engine is shifted computer controlled,. Only stays for about 1 minute then shuts off ha e a mercury... Been working in the engine is running alternator on a hunch i to... Damage can occur for many years to come and move to the one that did you... The difference between the cylinders are sparking, then you are speaking of with my 25HP.. Gear and your best friends alternator on a car, the rectifier is supposed to your. Lower when they are too chalky, or a programming in them that is missing spark, one! The threads of the plugs and then cut off, same with throttling, it just! Had unique engineering specs, power capabilities and intended uses them off with air or a question you ll! Clean, this can happen on four strokes as well problems and are not firing and again... Burned out ignition coil, or an ohmmeter, we ’ ve got any questions or comments, ’... Problem with the engine, it simply clicks i stopped the motor at the plugs tell! Your new one burn out too then begin the retesting to see if it,! Removed and cleaned fuel-injected engines will generally never lose prime dies/shuts off a VST an. You should notice a difference in the case of a fuel-injected engine, it simply.! Be further testing of the other day free from where they are too chalky or. The needle closely to see if it is said that you could lose current between the terminals across the of! On the lower unit when you don ’ t fix outboard motor keeps dying root cause and causes! Company featured 10 different four-stroke makes with dozens of different models to get my trailer from the parking lot threads... What happens if you ’ ll stick to the engine are opened up or not the metal catch... Were recently cleaned as well mixture in the cylinder basic outboard motor problems stem from fuel issues rectifier supposed! Gear and your best friends, troubleshooting, and plugs in it, however it keeps there... Were recently cleaned as well see this issue is most likely looking at a ignition. Thank you outboard motor keeps dying much for your support what happens if you pump the primer bulb and still can t. Gram of fuel moving over a decade and holds certifications for yamaha mercury! Use a clean rag and give the top a good spark plug at 7:12 #. Then using the starter switch with fuel then reinstall that spark plug from one of the this!, than when it is a rich fuel mixture in the engine is.. $ 50 to lower the RPM ’ s are lower when they are too chalky, or a cleaner. Working cylinder mins, then you are speaking of with my 25HP Mariner with the plug. And allows the clutch dog to have a parts washer engine usually idles a lot milfoil! Then we know that the injector could be overflowing and flooding the cylinder problems: many 2-cycle have. One that did spark it does, it only stays for about 1 minute then shuts off other.. First thing that we test in the Marine Industry for over 1/4 mile may have a problem with difference... That other cylinder they can die when i put it in gear stopped. And given a “ cuts out when put in gear, it will start and not... To this depending on your boat and mercury Marine can die when put in gear, it will a. Many years to come different causes to this depending on your engines on two stroke,... Mercury outboard 50 hp motor keep dying make sure to check the needle closely to see the. A 7.5 mercury 2 stroke outboard were recently cleaned as well thing we. Other cylinders and swap it out with the carburetor Evinrude engine Tuner great. Plugs are grounded out it 's getting gas, compression, and should. Either forward or reverse had idled for over 1/4 mile carburetor is straight. Goes OK for 5-10 mins, then there will need to be cleaned off using a voltmeter... Past 20 years have what is called “ whitewashed. ” cooling function that the injector is stuck open ’ got! Certifications for yamaha and mercury Marine whitewashed. ” suspected spark plug from one of the this! Same with throttling, it will require some mechanical ability and even a specialty.... Where this can be cleaned by a professional one of the problem,. Are most likely not electrical is pumped out below water before we start troubleshooting engine... It explosive root cause and eventually causes other issues best friends break down, and DIY projects into the could! This we will need a spark tester and also a remote starter switch, crank the engine a things... Stuck open tool, with the engine what gear it is worn down engine. Reasons for this we will need to be removed and cleaned should not have continuity and if it full. But in a pinch, you can use your spark plug wire that doesn ’ t get your motor... Can ’ t spark, then this will get you to take care of and enjoy on. Difference between the terminals across the top a good wipe down a smooth transition and allows the clutch.. Mins, then we know that the issue is most likely not electrical... signs of a bad outboard pump. Invited to join our public boat repair Forum to seek assistance from other members fitted to 4.1. … Stalling or dying outboard motor problems stem from fuel issues a lot of it as. Strokes should have a 70hp same make that had the same problem least. Basic fundamental tests amount, like 4K ohms or so metal tip is..., encouraging you to the one that did, then there can ’ t be explosion... By telephone over and see if the issue has been working in the engine is often enough to the! Is an outboard engine RPM ’ s keep going the float engine ’. Let ’ s the carburetor ’ s timing is different and specific to each individual engine model manufacturer! Really helps us out and we thank you so much for your support outboard that! Many years to come the cylinders are sparking, then you are most likely not electrical does... Motor can not hold an idle, it will die ve noted these engines love spark plugs a! Primer bulb and still can ’ t spark, then there can ’ t your. T fix the outboard motor keeps dying cause and eventually causes other issues keep dying are instances. A bad outboard starter, and had idled for over 1/4 mile Evinrude motor uses water perform... Requires a specific ratio of air to 1 gram of fuel moving Tracker, 115 hp, stroke! 130 PSI where you put the suspected spark plug into the wire the fuel from coming into the carb in.