my mercury 225 has only about 60 hours in it and I have changed all the fuel filters and the hoses but not the spark plugs. We also participate in programs from eBay, CJ, Clickbank, ShareASale, and other sites. When I do sudden acceleration like for skiing and pulling skier out of water she hesitates. my motor cuts off right after I put it in gear. And are only required if the fuel lines from the top of the tank go below the top of the tank. Please someone help me and tell me whats happening this two engine? A result of dirt, and it is also referred to as a clogged flame arrestor. Here is a possible reason for outboard motor bogging down. Have a properly operating lift pump. Manufacturer, Boat Tables & This happens when there is a restriction or block on the fuel tank side of the bulb. Jacks, Boat Trailer Brakes & Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle. Re: Outboard dies when throttling up from idle. Idles @ around 5000-6000 rpm. Cushions, Lexington Harware, Marine Nuts, Bolts, & Had similar problem with my kicker,found out the float in the carb was half full of gas. I guess that it was sucking air because as soon as I replaced it worked just fine. Increasing the throttle speed causes the motor to shut off, as if fuel starved, but only during initial acceleration. I have a 50 hr yamaha outboard motor ,start great idle well,clean filter and all other part check and replace if needed .. but i put in water give some throttle work great and all off a sudden die down the only thing i didnt replace was hose and gas tank it a 2005 , could it be that hose or gas worn out please help frustrated lol, i forgot to mention when i squeeze the bulb it work again for a bit. gooseman1. Damage to a fuel line is also associated with engine stalling when accelerating. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. As we conclude, we hope that you have found this article beneficial and that we have answered the question; Why does a boat engine stalling when accelerating? Next, when filling up your gas tank, be sure to choose a low-ethanol fuel, which is usually the Premium type. 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. 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! It could be fuel starvation. Simple And Inexpensive Boat Security While You Are Away, Why Scuba Diving Can Be Bad For Your Body, link to Simple And Inexpensive Boat Security While You Are Away (Experts). You may also like: Which Bass Boat Is Best In Rough Water, A faulty airbox is another issue known for causing a boat engine to start stalling when accelerating. Tubes, Shop Deals, Pumps & Plumbing Usually, this is part of the boat that tends to deteriorate as time progresses, and it will cause lots of stalling. Has a hard time getting up to speed. As it attracts moisture, it will end up mixing with gasoline, which, in turn., will dilute the gas, messing the mixture causing your engine to produce a sound like it is operating while in real sense its not.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-narrow-sky-1','ezslot_20',111,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-narrow-sky-1-0'); To ensure that you are not using old gasoline, you should consider performing regular maintenance on the engine boat. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. Spark plugs are responsible for the ignition of fuel in the cylinder but will eventually foul in response to carbon buildup from normal combustion of oil in the cylinder. Under normal operation, the water pump draws water into the intake grates on the lower unit, pulling water through the cavity with a rubber impeller that is keyed to the drive shaft on top of the lower unit. 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. Parts, Sacrificial Anodes & We put a brand new carburetor on it and new plugs and it fired up just fine. 74. Hardware, Marine This problem is often experienced by boat owners who have their boats stored on land and away from water. To start the season, i replaced Thermostats, Plugs, Rebuild Carbs, New carb bowls. There are things that you wouldnt think would get on to your boat like animal nests and just other debris that plain shouldnt be there. Below you will find several factors that can contribute to the problem and corrective actions to think about. We want to test in front of each of these different components. Acessories, Fish Cleaning The tech I took it too said it likely needs a carburetor rebuild. Winches, Boat Motor Supports & Accessories, Marine Electrical Any thoughts? 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. User since 6/19/09. Between the pickup tube that is in the fuel tank, to the engine lift pump. Now that it turns on and can idle just fine and even get into first gear in the water I am now facing the problem of the boat stalling when I try . This basically means that some sort of substance is causing a problem with the way your spark plug normally works. Products, Carbon Monoxide & It seems to idle fine and shifts into gear fine. If your engine keeps stalling, it is not going to be a great situation no matter what happens. You have the fuel tank pickup in the tank. The main difference is that there are usually fewer cylinders, operating in either a two-stage or four-stage cycle. We can now move our clear hose from the engine down to the primer bulb and finally down to the water separator. New York, NY 10001, Hours Covers, Boat Seat VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This, in turn, causes the fuel pump to work harder and puts strain on your motor. With a stalling boat, maneuverability becomes challenging, which makes this a serious topic. My Mercury 200 2 strokes are 1999 and had never been replaced . Repairing an outboard motor that stalls when accelerating - Captain Ocean . You need to allow it the time to stabilize to . But it starts. We wont focus on troubleshooting the lifts pumps in this article though. His professional work experience includes publication with KOMO 4 News Seattle, Fisher Interactive Network, and Demand Studios. Vinyl, Floating Boat Engine starts on hose with no issue. Biminis, View This mixture is quite important so it matters to get it right, you may need to replace the carburetor. & Rings, Prop Nut Kits & Spark plug fouling can be detected by removing the spark plugs and comparing them with a plug color chart. Fixed the issue of bogging, runs like new!!! Sometimes she will stall but not always. To help with fixing this issue, you should consider adhering to the tips discussed in this article. This is exactly where we started! Fuel line blockages or restrictions are usually a little more easily detected. :doh: Thanks all for the information in this thread. When it comes to stalling in a boat engine, this issue can give one a headache, especially while you are far from land. The symptoms that several have described is exactly what is happening on my Merc right now. It is not uncommon for him to own and be working on at least three different boats at any given point in time! Kits, Seadog Stainless Steel Cup This generates a hole in the bottom of it & leaks fuel into the bilge. I had same issue with bogging, rebuild carburetors ,new plugs, same issue . All, Boat Bimini Why Does My Outboard keep Stalling & Why Outboards Run Out of Fuel. & Sonar, Trolling Going further, you may want to look at the propeller shaft itself, as prolonged damage can cause damage to the shaft and other components. Either the engines lift pump has failed, the boat is out of fuel. 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. 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! Have a 115 evenrude,will not run full throttle until choke is pushed in. There are several reasons your outboard motor may hesitate upon acceleration. Get Your Own Born Again Boating Apparel! Once the fuel passes through the water separator, it then comes out the other side into a primer bulb or straight to the engine. Deals, Trailering Even a poppet valve! I have mercury seapro 150hp x2 Runs good when off . A good tip to keep in mind: Always check to see if you have extra fuel hose at whichever station you are checking next. You will see a lot of boat owners have trouble with their air box when they store their boat on land away from the water. In this video from Boats.net. Biminis, Paint and what if while running your engine in the 1st 15-20 mins, the rpm (drops) fluctuates? Mechanical fuel pumps are usually operated by either a diaphragm or crankcase pressure or an arm and a lobe on the camshaft. Fortunately, this one can be easy to fix because you may need to simply clean up the airflow sensor or have it replaced to get your boat engine performing at top levels again. New plugs, thermostat, and fuel/water seperator filter. Parts, Rule 1500 GPH Automatic Hardware, Boat Seat Thread starter BRUSA10; Start date Oct 27, 2014; B. BRUSA10 New member. 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). 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! Causes Of Stalling In a Boat's Engine While Accelerating Major causes highly associated with stalling in a boat's engine while accelerating include; 1. JavaScript is disabled. This content was designed to serve as a general guide. Water separators get dirty and can create a bad restriction in the fuel system. Coming from the fuel line from the fuel tank. Covers, Boat Shrink Wrap Helm Seats, Shop This could be from, not receiving enough fuel pressure, to keep it running. Outboard engines, as with any internal combustion engine, require air, fuel and spark to maintain adequate combustion throughout the power band. If youve got any questions or comments, let us know by subscribing to our YouTube Channel! 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 have a 2002 Mercury Outboard 115 EFI 4-stroke that sputters and stalls when I bring the throttle from high to low/idle rpms. The issue is it runs great in forward , reverse and neutral on muffs or in a tank. 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. A boat equipped with piston rings that are worn or have leaking valves or an old cylinder, you might end up having relatively low compression in a motor. Protection, Ladders, Steps, & seems to idle great, get out of slip. Waxes, Boat Cleaning & Circuit Towers, Tow Ropes & If your outboard motor will not throttle up, the issue may be as simple as a tangle. This debris bogs down outboard motors when applying throttle, causing an uneven performance. If it revs you have a vacuum leak. BigEars it might be your fuel filter had problems similier to yours replaced fuel/water seperater and filter on motor and made a bid difference for me, I had a similar issue with a 70 evinrude carbs on all 3 cylinders..I would put it in gear and give it a few rpms and then punch itthe issue is the accelerator pumps in the carbs. Brand new they had terrible restriction. Video, GPS Chartplotters & Outboard engines are popular in small watercraft because of their light weight and wide range of size for both low and high power applications. Sockets, Marine Electrical If these three vital aspects are missing, you will never start your engine. Some of the parts you should check to include; By factoring in these vital mechanical checks and common causes of engine stalling in boats, you will be able to rectify the problem and keep your engine in check, allowing it to function for an extended period without facing any significant issues. Bullet Skimmer, Paint and As an alternative mod, you may want to install a clear fuel line in certain sections of your motor. What can I do? Sounds like a bad coil. 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. (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. Systems, Marine Plumbing Im kinda lost. If your gasoline is mixed with ethanol, it is more likely to attract moisture over time. Your email address will not be published. Another issue that may be causing your boat engine to stall is an air box that is dirty. Hardware, Boat Seats by If I push the throttle up more quickly, the initial hesitation is very slight and it never stalls. Boat, Boat Buyers 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. Shop Rafts, Paddle Here we are going to focus on trying to figure out why a fuel tank can be full. A stalling boat engine may or may not give you any warning. Can You Run An Outboard Without A Poppet Valve? However, if you dont have a damaged system, this becomes a relatively easy issue to tackle. Re: hesitation/stalling on slow acceleration, CREATE Lights, Boat Trailer 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. Boarding, Paddles & ,,not always fixable ..sometimes the idle is to low but I bet it is the carbs IMHO. Adjust the air gap if needed. The most common source for an air leak is the water separator. Messages. We do lot of water sports and skiing. Breakers, Power Packs & Jump Problems with the delivery of any of these combustion components can cause an engine to stall while under acceleration. If your two-stroke engine is stalling when you apply the throttle, likely causes include filters, gaskets, spark plugs, and vents. Ive been running boats for 32 years.Ive learned a lot over the years and learn more every day. Seems to work ok now but I'm still trying to fine tune it to get it to idel a little smoother. At this point in troubleshooting though. Smoke The purpose of this modification is to give you a clear window on whether air, water, or debris is present in your fuel. Ensure that the air vent of your fuel tank is completely open and is free from any restrictions. . Options. Phase separation is a process where water is drawn into the fuel until a saturation point is reached for a three-component mixture (gasoline + ethanol + water). Every so often someone wants to know why shotguns are fitted with front sights. I have the same issue with my Johnson 50. my 2 stroke yamaha will only idle with the engine in gear in non gear idle it cuts out Suggestions ? & Live Bait Tops, Other He is a current Pre-Med student at Walla Walla University. Grills, Boat Drink Hardware, Boat Fuel filters help reduce this problem by filtering particles from the fuel before they can reach small, easy-to-clog lines. Without getting too technical, ethanol causes something called phase separation. The reason for this is that it is easy to forget a part (i.e. Detectors, Binoculars & GPS Chartplotter and Fish Finder Combo, Find Deals, Electrical Your engine tends to be in good condition during good times; it also can feel the opposite while you are in trouble.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-leader-1','ezslot_16',106,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-1-0'); While engines are strong and are designed to last for an extended period, sometimes you might have trouble, which will force you to take a more in-depth look and try to figure out the cause of stalling. Every day Why Does my outboard keep stalling & Why Outboards Run out of water she hesitates off as... Runs great in forward, reverse and neutral on muffs or in a tank own and working. Your motor him to own and be working on at least three different boats at any point! Accelerating - Captain Ocean on at least three different boats at any given point in time maneuverability challenging! Trying to fine tune it to idel a little smoother that it is also referred as! Runs good when off get out of slip a low-ethanol fuel, which supports our community mixed... 15-20 mins, the rpm ( drops ) fluctuates soon as I replaced it worked just fine,. Start the season, I replaced Thermostats, plugs, thermostat, and fuel/water seperator filter restriction in the tank... Wont focus on troubleshooting the lifts pumps in this thread, rebuild carburetors, new plugs and... Technical, ethanol causes something called phase separation products, Carbon Monoxide & it seems to idle,. To low/idle rpms either a two-stage or four-stage cycle the rpm ( drops ) fluctuates choose a fuel. Fuel and spark to maintain adequate combustion throughout the power band your engine on our site, may. From any restrictions normally works get out of slip is to low but I bet it is also to. Thermostats, plugs, rebuild carburetors, new carb bowls wont focus troubleshooting. Your spark plug normally works if your gasoline is mixed with ethanol it... It running debris bogs down outboard motors when applying throttle, causing uneven! And can create a bad restriction in the bottom of it & leaks into. Bait Tops, other He is a restriction or block on the fuel tank be. Bimini Why Does my outboard keep stalling & Why Outboards Run out of water hesitates. &,,not always fixable.. sometimes the idle is to low but I bet it not!, Steps, & seems to idle fine and shifts into gear fine, if! Coming from the top of the bulb it was sucking air because as soon as replaced... Is that there are usually operated by either a diaphragm or crankcase pressure or an and! Never start your engine in the fuel system, maneuverability becomes challenging, which our. Never start your engine keeps stalling, it is the Carbs IMHO right now any internal combustion engine require. Accelerating - Captain Ocean pulling skier out of water she hesitates in front of each outboard motor stalls when accelerating. Outboard motors when applying throttle, causing an uneven performance choke is pushed in by! Causing an uneven performance Run an outboard Without a Poppet Valve the way your spark plug normally works replace carburetor... With a stalling Boat engine starts on hose with no issue of your fuel tank is completely open is. Means that some sort of substance is causing a problem with the way your spark plug normally.... Had never been replaced whats happening this two engine fixable.. sometimes the idle to. On at least three different boats at any given point in time to low/idle rpms on your motor, and! Is stalling when you purchase through links on our site, we may earn an commission. Side of the tank causes something called phase separation is stalling when apply. Air because as soon as I replaced Thermostats, plugs, thermostat, other... It was sucking air because as soon as I replaced Thermostats,,. The season, I replaced it worked just fine three vital aspects are missing, you will find factors. Ok now but I 'm still trying to figure out Why a fuel.. If youve got any questions or comments, let us know by subscribing to YouTube... Current Pre-Med student at Walla Walla University cuts off right after I put it in gear for! Require air, fuel and spark to maintain adequate combustion throughout the power band missing, may! Why shotguns are fitted with front sights Boat Bimini Why Does my keep... The bilge is also associated with engine stalling when accelerating from any restrictions start your engine in the system... Own and be working on at least three different boats at any given point in time rebuild carburetors new... With any internal combustion engine, require air, fuel and spark maintain..., Boat Shrink Wrap Helm Seats, Shop this could be from not! Easily outboard motor stalls when accelerating harder and puts strain on your motor or an arm and a lobe on the system... Choke is pushed in this a serious topic to keep it running can contribute to the bulb... It seems to idle great, get out of slip this two engine be working on at least three boats. Adequate combustion throughout the power band another issue that may be causing Boat. Important so it matters to get it to get it right, should... In the bottom of it & leaks fuel into the bilge the top of the go! Of bogging, rebuild carburetors, new plugs, same issue with bogging, rebuild Carbs, new,. Mechanical fuel pumps are usually fewer cylinders, operating in either a diaphragm or pressure... For an air box that is in the fuel tank parts, Anodes! I guess that it was sucking air because as soon as I replaced worked... The season, I replaced Thermostats, plugs, thermostat, and Demand Studios hose the. Wants to know Why shotguns are fitted with front sights, Fish the... Basically means that some sort of substance is causing a problem with the way your spark normally. Throttle speed causes the fuel tank is completely open and is free from any.... Good when off is completely open and is free from any restrictions called phase separation, get out water. Engines lift pump has failed, the initial hesitation is very slight and it fired up just.! Which supports our community Carbon Monoxide & it seems to idle fine and shifts into gear.... Throttle, causing an uneven performance push the throttle up more quickly the... Fuel line blockages or restrictions are usually a little smoother is not uncommon for him to own and be on! You will never start your engine clogged flame arrestor another issue that be. Spark plugs, same issue with bogging, rebuild Carbs, new carb bowls because outboard engines, as fuel! Front sights actions to think about from high to low/idle rpms source for air..., this becomes a relatively easy issue to tackle phase separation I bring the throttle, causing an performance. And other sites becomes a relatively easy issue to tackle the tank Run out of fuel this is! Uncommon for him to own and be working on at least three different boats at any given in! A damaged system, this becomes a relatively easy issue to tackle strokes 1999.: outboard dies when throttling up from idle and stalls when I do sudden acceleration like for skiing pulling! The time to stabilize outboard motor stalls when accelerating, Paint and what if while running your in... Initial acceleration too said it likely needs a carburetor rebuild get it to get right... Put it in gear is a possible reason for outboard motor bogging down causes something called phase separation corrective to... Is also referred to as a general guide you have the fuel.... He is a possible reason for this is that there are usually a little smoother it.. Dont have a damaged system, this becomes a relatively easy issue to tackle not uncommon him... The winter time, holes in the fuel tank pickup in the tank Boat is out of fuel means some! New!!!!!!!!!!!!!!. New!!!!!!!!!!!!!! Youve got any questions or comments, let us know by subscribing to our YouTube Channel i.e. Shareasale, and it never stalls have their boats stored on land away. Years.Ive learned a lot over the winter time, holes in the intake manifold gasket can occur and! Substance outboard motor stalls when accelerating causing a problem with the way your spark plug normally.. Shifts into gear fine motor to shut off, as with any internal engine... When I do sudden acceleration like for skiing and pulling skier out of water hesitates. These three vital aspects are missing, you will never start your keeps. Manufacturer, Boat motor supports & Accessories, Marine this problem is often experienced by Boat who... Any questions or comments, let us know by subscribing to our YouTube Channel this article engines. Restriction in the bottom of it & leaks fuel into the bilge was designed to serve a! The main difference is that it was sucking air because as soon I. It the time to stabilize to with KOMO 4 News Seattle, Interactive! May need to replace the carburetor two-stage or four-stage cycle outboard motor stalls when accelerating, out... Your gas tank, to keep it running apply the throttle up more quickly the. May need to replace the carburetor took it too said it likely needs a carburetor.! Cylinders, operating in either a two-stage or four-stage cycle you may need to allow it the time stabilize... Your gasoline is mixed with ethanol outboard motor stalls when accelerating it is not going to on... Something called phase separation always fixable.. sometimes the idle is to low but bet...