Have stripped the carb, changed the fuel and changed the spark plug. Neglecting it will further damage the engine. 2004 Mercury/Yamaha 4-stoke EFI 115hp EXLPT OT812944 1950hrs. compression is 121 psi in both cylinders. After almost 2 hours on the water, mixing it up from WOT to idle in neutral and forward gear, 3 miles of no wake zone, and back to the launch, it did not die once. If the Mercury Outboard is stalling at idle, try to find issues with the. When I shift from Forward to Neutral, or when at idle, the Mercury 90-HP FOURSTOKE outboard engine dies. This troubleshooting guide will help you determine why your 9. Answered in 3 minutes by: Marine Mechanic: Tan Hello. Outboard Idling Rough? A rough idle on an outboard is generally caused by a failed spark plug, a clogged or stuck open fuel injector, a clogged or dirty carburetor, or an engine that has an issue with the timing when dealing with a 2-stroke outboard. I have a 2002 Dauntless 16 with a Mercury 90-HP FOURSTROKE. Some smaller or older outboards may not even have one. Mercury Outboard Runs Then Dies Mercury Outboard Runs Then Dies // Try This Before You See Mechanic Getting It Done North Of 7 13. 176K views 5 years ago Mercury outboard idles rough and/or stalls refers to when a Mercury outboard runs in an irregular or uneven manner while in neutral or out of gear. posted 07-21-2011 11:30 PM ET (US) I have twin 2000 Mercury OptiMax 225-HP outboard engines with 600 hours. 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. 9HP Mercury boat motor won’t start. Fix Fuel Injectors If the Mercury Outboard is stalling at idle, try to find issues with the defective injectors for clogging issues. Your outboard may be stalling & running out of fuel due to three issues. They run well at cruising speed and WOT. NB: the solutions for repairing an outboard motor that stalls on acceleration are the same for all brands: Yamaha, Mercury, Suzuki, Johnson, Zodiac, Honda, etc And whatever the power of your 2-stroke or 4-stroke engine: 6hp, 15hp, 25hp, 30hp, 50hp, 60hp, 75hp, 100hp, 150hp, 250hp, etc. Mercury Outboard Stalls At Idle 1. How do you adjust the idle on a Mercury EFI outboard? Turn the idle adjustment screw on the Mercurys carburetor to the left with a screwdriver until the engine barely runs. Drove to a protected lagoon and just idled a few minutes switching to forward at times and the motor wouldnt die. Using gasoline that is more than 10% ethanol can lead to poor combustion due to drawing water into the fuel system – and it might even void the. After runnning for about 15 or 20 minutes at 3000 to 4000 rpms it starts to stall when you put it i read more Jason Marine Mechanic 24,583 satisfied customers Its a 1998 50 hp Force outboard and its leaking fuel. Mercury Outboard Runs Then Dies Mercury Outboard Runs Then Dies // Try This Before You See Mechanic Getting It Done North Of 7 13. On the simplest of outboard engines these are easily replaceable, often installed inline between the fuel inlet and the carburetor. A mercury outboard that frequently stalls while idle should be addressed and solved as soon as possible. The only water-fuel separating filter is under the cowling and has a translucent bowl. The typical two stroke outboard carb has two systems so to speak. 32K subscribers 310K views 3 years ago MERCURY OUTBOARD TROUBLESHOOTING & REPAIR Here is a. Mercury Outboard Bad Stator Symptoms. Mercury Outboard Stalls At Idle? Try There 5 Methods Now!. Under heavy loads, lean mixtures may cause the engine to stall if there is too much air and not enough gasoline in them. If you see debris inside the filter or fuel lines, clean them by spraying solvent cleaner. Stalling at Idle is also a symptom of a bad mercury outboard stator. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH SIMPLE SOLUTION Small town Bassin 7. It seems fine up to about 2500 RPM under load, but after that, it tends to stall. 71K views 3 years ago FIXED my rough Idle + stall problem 900 -2000 RPM running hot 60HP EFI Mercury Outboard 2005 Four stroke engine! The engine starts fine and after runing for a while full. How do you adjust the idle on a Mercury EFI outboard? Turn the idle adjustment screw on the Mercury’s carburetor to the left with a screwdriver until the engine barely runs. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. First, you need to disconnect all the connections and remove the fuel filter from the fuel lines. 5 Outboard Engine Quick Fix Tips. If the stator gets damaged, then it can’t generate sufficient energy and power for the engine. How do you adjust the idle on a Mercury. The engine stalls in neutral, at idle, only. Mercury/Johnson/Evinrude - Finding the sweet spot on Boat motor idle. A mercury outboard that frequently stalls while idle should be addressed and solved as soon as possible. Generally, counter clockwise richens, clockwise leans. Stalling at Idle means the engine stops while running at a low speed. I have a 2006 mercury 25 hp Efi 0r154051. Here are 9 common reasons why an outboard dies at idle: Carburetor issues Idle settings not configured Water in the fuel supply Clogged fuel tank vent Malfunctioning idle air control valve Fuel system issues Faulty spark plugs Fuel injection issues Damaged thermostat. Newer, fuel-injected outboards can have as many as 12 of these filters—two or three primaries and one or more for each fuel injector. It is one of the core reasons for outboard motor overheating so, the first and foremost task is to check your cooling system for any possible leak. 176K views 5 years ago Mercury outboard idles rough and/or stalls refers to when a Mercury outboard runs in an irregular or uneven manner while in neutral or out of gear. 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. Under heavy loads, lean mixtures may cause the engine to stall if there is too much air and not enough gasoline in them. Sometimes it appears that there is little to no fuel in the bowl, but the engine is running. Sounds like a carburetor adjustment is needed. Our new 2021 Mercury was having idle issues such as high rpm at idle and irregular idle speed. 14K views 1 year ago Our new 2021 Mercury was having idle issues such as high rpm at idle and irregular idle speed. The fuel filter is clogged It is recommended to change your fuel filter regularly. The typical two stroke outboard carb has two systems so to speak. If the outboard gets overheated, it bearishly shuts off. After almost 2 hours on the water, mixing it up from WOT to idle in neutral and forward gear, 3 miles of no wake zone, and back to the launch, it did not die once. Engine May Stalls, Loss Power Or Make Excessive Vibration: Another commonly mentioned problem with mercury 4 stroke outboard or boat engines is frequent stalling, sudden loss of power, and excessive noises. Then it takes time to start again. Outboard Boat Engine wont stay running - Adjust Idle Screw - VERY EASY DIY with Michael Borders 139K subscribers Subscribe 627 339K views 5 years ago Mercury/Johnson/Evinrude - Finding the. What do you check when your outboard idles and then dies? In this short video from Boats. There can be many reasons why a 9. First, you need to disconnect all the connections and remove the fuel filter from the fuel lines. 3 Common Problems With Mercury 4 Stroke Outboard Motor. Also, when at an idle, I can rev it to about 3200 RPM. Repairing an outboard motor that stalls on acceleration. Squeezing primer bulb when it is about to stall keeps it running every time. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH SIMPLE SOLUTION Small town Bassin 7. With outboards, the rubber bushing inside the hub can begin to slip and fail, causing a loss of power. It starts fine but stalls out after 10-15 seconds. will stay running if I throttle up while in neutral,. My name is ***** ***** I will be assisting you today. Stalling and rough gear change has also been reported due to IAC. The engine runs great at idle and above 2000-RPM, but wont run smoothly between idle and 2000-RPM, stalls when the engine speed is decreased quickly, and sometimes stalls when slowly decreased below 2000-RPM to idle. If your outboard will not throttle up or your outboard motor dies at idle frequently, chances are you may have problems with your spark plugs. Outboard stalls after a minute or two of running. Next, wait for some time so that the filter or lines get properly dried and re-insert it accurately. EricMunoz. Re: 40 HP Mercury stalls when given throttle #2. If your outboard stalls whenever you drop it into idle, the problem usually lies with the carburetor. posted 04-06-2015 05:17 PM ET (US) I have a 2006 Mercury 50-HP FourStroke EFI Bigfoot engine. The idle circuit is somewhat independent of the high speed circuit being higher in the carb, and this keeps it out of the gunk that gasoline forms when allowed to evaporate from sitting up. Check fuel quality, compression and plug appearance first. There are several methods to troubleshooting a stalling outboard engine. What do you check when your outboard idles and then dies? In this short video from Boats. Stalling at Idle is also a symptom of a bad mercury outboard stator. There can be many reasons why a 9. I have a 2006 Mercury 50-HP FourStroke EFI Bigfoot engine. It seems fine up to about 2500 RPM under load, but after that, it tends to stall. Even when I turned off the motor to change tanks, it started right up. When the boat was used for the second or third time the motor would idle between 8 and 9 hundred rpms. It can only happen if the engine is not getting sufficient power. Recently [the following were] replaced: the fuel rails (with new fuel injectors), spark. a – Horn inside remote control b – Horn connected to ignition key switch WARNING HORN SIGNALS. Then when I put it in neutral or forward gear in idle, it dies not right away but a few minutes later. 14K views 1 year ago Our new 2021 Mercury was having idle issues such as high rpm at idle and irregular idle speed. You have to start somewhere dandreye Petty Officer 2nd Class Joined Oct 19, 2007 Messages 141 May 27, 2012 #6. When you turn the throttle from idle upwards the engine dies, unless you do it really really slowly. Let’s take a look at seven reasons why your outboard won’t throttle up and how to fix them: Tangled Propeller Poor Gas Quality Clogged Fuel Filter Fuel Hose Replacement Faulty Impeller Bad Spark Plugs Malfunctioning Fuel Pump 1. 115 2 stroke in gear stalling issue. Yes, uneven compression will cause rough idle as well as MANY OTHER THINGS. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15 mins to install) made the thing. Engine stalls when giving gas. Thermostat was causing rough idle. Let’s take a look at seven reasons why your outboard won’t throttle up and how to fix them: Tangled Propeller Poor Gas Quality Clogged Fuel Filter Fuel Hose Replacement Faulty Impeller Bad Spark Plugs Malfunctioning Fuel Pump 1. Clean/re-gap plug and double check that you still have strong spark. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING. Sounds like a carburetor adjustment is needed. If your outboard stalls whenever you drop it into idle, the problem usually lies with the carburetor. So, let’s take a look at the checklist given below- Carburettor Check Usually, the problem lies within the carburetor,. 6 Reasons Why My Mercury Outboard Stalls At Idle Carburettor Check. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15. Here are 9 common reasons why an outboard dies at idle: Carburetor issues Idle settings not configured Water in the fuel supply Clogged fuel tank vent Malfunctioning idle air control valve Fuel system issues Faulty spark plugs Fuel injection issues Damaged thermostat. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. There are several methods to troubleshooting a stalling outboard engine. With outboards, the rubber bushing inside the hub can begin to slip and fail, causing a loss of power. Outboard Idling Rough? A rough idle on an outboard is generally caused by a failed spark plug, a clogged or stuck open fuel injector, a clogged or dirty carburetor, or an engine that has an issue with the timing when dealing with a 2-stroke outboard. Eventually you should take carb off to clean bowl and main jet. The fuel used for your outboard motor can be one of the primary reasons why your outboard motor is bogging down. He changed the thermostat and its purring like a kitten. 9 horsepower Mercury outboard will not activate; e. 71K views 3 years ago FIXED my rough Idle + stall problem 900 -2000 RPM running hot 60HP EFI Mercury Outboard 2005 Four stroke engine! The engine starts fine and after runing for a while full. Mercury Marine Warning System The outboard warning system incorporates a warning horn inside the boat. Merc 115 2 stroke in gear stalling issue. If the kill switch looks damaged, replace it and put the gear on neutral before starting the engine. Your outboard may be stalling & running out of fuel due to three issues. 25hp 4 stroke mercury idles great loss of power/rough. Depending upon the model you’re currently using, a dirty carburetor can also cause simple problems. 7 Reasons Your Outboard Will Not Throttle Up and How To Fix …. 176K views 5 years ago Mercury outboard idles rough and/or stalls refers to when a Mercury outboard runs in an irregular or uneven manner while in neutral or out. Outboard Idling Rough? Heres Why & What To Do!. It would surge up and down but ran fine otherwise. Problems with carburetors on this Mercury motor are very common. Re: 2 stroke outboard starts but then dies when throttled or idle. The warning horn may be located inside the remote control or connected to the ignition key switch. 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. net>Merc 115 2 stroke in gear stalling issue. If Fixing The Fuel Injectors. The bulb is working okay, I now believe there was a leak in the fuel filter within the fuel line. 6 Reasons Why My Mercury Outboard Stalls At Idle Carburettor Check. I have been trying to isolate an in gear idle stall on my 2005 Mercury 115 2 stroke outboard, the carbs and fuel pump were rebuilt and compression checked at 135 per cylinder by a boat shop but I still have an occassional stall when I put my motor into gear. 2004 Mercury/Yamaha 4-stoke EFI 115hp EXLPT OT812944 1950hrs. Drain all the old gas out of the carb bowl. Re: 40 HP Mercury stalls when given throttle #2. Mercury 4 stroke rough idle (solved). The engine gets the power for running from a stator. 32K subscribers 310K views 3 years ago MERCURY. Both run rough at idle in neutral, and will eventually stall, unless I increase the engine speed. Outboard Boat Engine wont stay running. If youve not serviced the unit in a long time, then there is a huge possibility that youre in a similar situation. Mercury Outboard Runs Then Dies Mercury Outboard Runs Then Dies // Try This Before You See Mechanic Getting It Done North Of 7 13. Mercury Marine Warning System The outboard warning system incorporates a warning horn inside the boat. Outboard Boat Engine wont stay running - Adjust Idle Screw - VERY EASY DIY with Michael Borders 139K subscribers Subscribe 627 339K views 5 years ago Mercury/Johnson/Evinrude - Finding the. 9 HP) Won’t Start or Stalls After Starting>Mercury 9. When I try to advance the throttle, the motor does not have any power and it will stall if I try to go about 3000 RPM. Sep 13, 2004. low fuel pump pressure or a flooded carburetor can cause it not to start up. Mercury/Johnson/Evinrude - Finding the sweet spot on Boat motor idle. 6K subscribers Subscribe 12K 676K views 2 years ago. runs fine at idle but as soon as I try to move into full throttle it shuts right off or - Answered by a verified Marine Mechanic have a 1989 50 hp 3 cylinder yamaha outboard. posted 04-06-2015 05:17 PM ET (US) I have a 2006 Mercury 50-HP FourStroke EFI Bigfoot engine. 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. What Causes an Outboard Engine to Stall When Giving it More. Probably a bunch of crud in the bowl. Tangled Propeller If your outboard motor will not throttle up, the issue may be as simple as a tangle. Outboard stalls after a minute or two of running. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH SIMPLE SOLUTION Small town Bassin 7. Thermostat was causing rough idle. net, John will show you where to start if your outboard di Mercury Outboard Runs Then Dies // Try. Stalling and rough gear change has also been reported due to IAC. 9 HP) Won’t Start or Stalls After Starting. Stalling at Idle. Both run rough at idle in neutral, and will eventually stall, unless I increase the engine speed. It might be something as simple as the carburetor idling screw needing a small adjustment, so check that first and adjust it if needed. Prevention: Consider carrying a spare prop, along with the necessary tools to make the swap. Mercury/Johnson/Evinrude - Finding the sweet spot on Boat motor idle. Why Does My Outboard Keep Stalling & Why Outboards Run Out of Fuel. I noticed that this bowl is never full of fuel when running. 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. Mercury Outboard Runs Then Dies // Try This Before You See …. Usually, the problem lies within the carburetor, if there is an issue with the outboard stalling. The stator is the main source for which the engine runs fluently. Re: 2 stroke outboard starts but then dies when throttled or idle. Any ideas? Poor quality fuel? I would think its a carb or fuel flow problem. The only way to start it is if I push the ignition switch to choke. How do you adjust the idle on a Mercury EFI outboard? Turn the idle adjustment screw on the Mercury’s carburetor to the left with a screwdriver until the engine barely runs. To find out if your problem outboard motor stalling from fuel system, just test the fuel pressure at the end of the chain. Your outboard may be stalling & running out of fuel due to three issues. Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors on up to Mercurys biggest. Repairing an outboard motor that stalls when accelerating. Stalling at Idle is also a symptom of a bad mercury outboard stator. The boat is still surging but around 1000-1100 rpms more when cold but does it sometime when the engine is warm. Our new 2021 Mercury was having idle issues such as high rpm at idle and irregular idle speed. That’s why you will face a shortage of power while running the engine. If the Mercury Outboard is stalling at idle, try to find issues with the defective injectors for 2. So, lets take a look at the checklist given below- Carburettor Check Usually, the problem lies within the carburetor, if there is an issue with the outboard stalling. Mercury Outboard Runs Then Dies // Try This Before You See. 6 reasons why Mercury Outboard Stall At Idle. The dealer checked it out spring 2013 and found no codes. 14K views 1 year ago Our new 2021 Mercury was having idle issues such as high rpm at idle and irregular idle speed. Any leakage in the cooling system can cause overheating trouble…. Your outboard may be stalling & running out of fuel due to three issues. May have to strip and clean the carb more thoroughly. I have been trying to isolate an in gear idle stall on my 2005 Mercury 115 2 stroke outboard, the carbs and fuel pump were rebuilt and compression checked at 135 per cylinder by a boat shop but I still have an occassional stall when I put my motor into gear. I am using new fuel in a separate can. Stalling and rough gear change has also been reported due to I. There might be an issue with the faulty injectors for clogging problems. 2012 mercury 115 4 stroke surging. Yes, uneven compression will cause rough idle as well as MANY OTHER THINGS. If I increase the fast-idle lever to the max, the engine sticks at 3200 RPM and eventually dies. After almost 2 hours on the water, mixing it up from WOT to idle in neutral and forward gear, 3 miles of no wake zone, and back to the launch, it did not die once. outboard motor that stalls when accelerating >Repairing an outboard motor that stalls when accelerating. Mercury Outboard Stalls At Idle 1. You may need to have the carburetors repaired. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. But before you tear it apart you might try richening up the idle mixture screw about 1/4 of a turn at a time until it starts to roughen up a little. First, check on the radiator, hoses, gasket head, or thermostat housing. Your outboard engine’s ignition system is responsible for igniting the gas, firing up the engine, and keeping it running. Then when I put it in neutral or forward gear in idle, it dies not right away but a few minutes later. Then lean it down just to the point it smooths out. This troubleshooting guide will help you determine why. If this has not been done, then the fuel cannot be properly routed to your boats engine. posted 07-21-2011 08:38 AM ET (US) Your Mercury 90-HP FOURSTROKE outboard engine needs a tune-up. Stalling and rough gear change has also been reported due to I Our new 2021 Mercury was having. Mercury Outboard Stalls At IdleMERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH. Then move on to spark quality, idle timing and carb adjustments. I have 50 hp mercury outboard. 176K views 5 years ago Mercury outboard idles rough and/or stalls refers to when a Mercury outboard runs in an irregular or uneven manner while in neutral or out of gear. Hey guys, questions for you outboard wizards regarding low pressure fuel pumps Heres the situation: ran down to the rockpile yesterday (1 YT in boat, 1 released :D ), boat ran. The result is poor acceleration, rough idle and stalling. It is normal if that happens because the engine needs to cool down at first. Mercury 150 Four Stroke Problems – Fix Some Of The …. Common Problems With Mercury 4 Stroke Outboard Motor>3 Common Problems With Mercury 4 Stroke Outboard Motor. Outboard Stalling: Fuel Pump?. Under heavy loads, lean mixtures may cause the engine to stall if there is too much air and not enough gasoline in them. Problem 3: Engine May Make Excessive Vibration Another problem that is faced with mercury four-stroke is excessive noise. If your outboard stalls whenever you drop it into idle, the problem usually lies with the carburetor. On the simplest of outboard engines these are easily replaceable, often installed inline between the fuel inlet and the carburetor. 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. To find out if your problem outboard motor stalling from fuel system, just test the fuel pressure at the end of the chain. And this is most likely caused by the ethanol content of the gas. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH SIMPLE SOLUTION Small town Bassin 7. net, John will show you where to start if your outboard di Mercury Outboard Runs Then Dies // Try. It runs at idle fine. In any of those 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. 9 horsepower Mercury outboard will not activate; e. If the kill switch looks damaged, replace it and put the gear on neutral before starting the engine. posted 07-21-2011 11:30 PM ET (US) I have twin 2000 Mercury OptiMax 225-HP outboard engines with 600 hours. Outboard Idling Rough? Heres Why & What To Do!>Outboard Idling Rough? Heres Why & What To Do!. george170: posted 07-20-2011 05:14 PM ET (US). It makes it very hard to dock, especially when the wind is blowing. If he ran it out of gas its possible he sucked some deris from the bottonm of the tank into the system a good carb cleaning might be in order. There will be a shortage of power and energy for the engine. Practice changing props so there are no surprises, if you have to do it away from home. I tried cleaning the carburator with Sea Foam Deep Creep and Sea Foam cleaner. 2 stroke outboard starts but then dies when throttled or idle. 32K subscribers 310K views 3 years ago MERCURY OUTBOARD TROUBLESHOOTING &. A manifold leak is easily detected by a hissing sound coming from the source of the leak. When the boat was used for the second or third time the motor would idle between 8 and 9 hundred rpms. I became sensitive to this when owning an older outboard. If you see debris inside the filter or fuel lines, clean them by. Sine Ive owned it it starts cold an idles fine. Again, you might need to idle home. It might be something as simple as the carburetor idling screw needing a small adjustment, so check that first and adjust it. What is causing the problem with our 3. MERCURY 2 STROKE OUTBOARD POOR IDLE TROUBLESHOOTING WITH SIMPLE SOLUTION Small town Bassin 7. If it runs OK under full throttle conditions it may be some debris in the low speed circuit.