Mercury 200 efi fuel pump problems

Attach another fuel line to the outlet and clamp it off tightly. I just bought a 19 Cajun with a 93 Mercury 200 EFI motor.

I just changed the high pressure fuel pump on my 1997 200 mercury efi and it now cranks right up.

Mercury 200 efi fuel pump problems. Mercury 200 EFI Fuel Pump Issues First boat blues There is a mechanical pump that feeds the vapor separator which contains the high pressure pump. Disconnect the fuel hose just after the mechanical pump point it into a suitable container and have a. Make sure you have a reputable mechanic remove the injection components and use factory block off on the pump mounting boss.

Also ignition problems are often miss diagnosed as fuel issues on these engines. Check the entire ignition system at idle and 2400RPM stator has a low and high rpm side to make sure proper system health. I have a mercury 200 efi 1996 the fuel pump is not getting electricity to it what is the most common problem that causes this.

The boat did hit hard after a wave this weekend and that is when it stopped running. The motor still turns over just no fuel. 1999 200 efi merc obidles and wot fine about 4-6 minutes running rpms shoot up and engine diespump primer bulbfire back up will do the same thing over and overthen battery totally dischargedwhen I open battery compartmentbilge area while engine was running I hear tick tick ticking like a transducer noisesonar is off can feel ticking in primer bulbwondering if possible restriction.

I recently purchased a 99 model Procraft with a Mercury 200 EFI that had been sitting for 13 years I know horrible on it. The first thing I did was drain the tank and check all the fuel lines for cracks and gunk in them none to be seen. I changed the Fuel filterwater seperator which was nasty impeller fluids in lower unit and took the VST tank off and cleaned everything.

1 Ignition switch off 12V on both wires 2 Ignition switch on and engine not running blackred wire drops to near ground for 30 seconds or so and fuel pump runs for this time then returns to 12V and fuel pump shuts off. 3 Ignition switch on and engine running blackred wire remains at near ground and fuel pump runs. Discussion Starter 1 Jun 1 2009.

I bought an Ultra 21 LX open bow last year. It has a Mercury 25L XRi EFI 200 hp - 1992 model that does not have an electric fuel pump. It is running on the old vacuum system whereby you pump the bulb and then.

I have a problem with my recently rebuilt 200 EFI Merc. Starts fine and idles fine but when I go to accelerate to get on plane it will bog down just prior to getting on top. It doesnt die just slows to a high idle.

Sometimes it will get on pad and run for a few minutes without problem 5-10mins and then suddenly bog down to idle. Previous problems and repairsfuelvst filtertank disassembledall filters are new and remain cleanlow pressure pump rebuiltpressure regulator replaced50 psi readingspec 34-36psifloat in vst tank replaced due to fuel spraying out a relief holefloat was stuck down. Check the fuel pressure while its running.

It sounds like the fuel filter is stopping up. Fuel filter should be changed every 50 thousand miles or so. If the filter is bad it wont be long until the fuel pump has to be replaced located inside the fuel tank.

Its a lot easier to replace the filter before the pump is damaged. Mercury 200 efi fuel pressure 54321 - YouTube. I just changed the high pressure fuel pump on my 1997 200 mercury efi and it now cranks right up.

When I go to get on plane it struggles really bad but once on plane it runs 67mph with plenty of power. Then when I go to load it on the trailer it just bogs out with very little power. Before I changed the fuel pump I did not have this problem.

Check EFI fuel pressure. Merc has had problems with pumps after they sit a while. I actually uncrimped the ends of my fuel pump pulled it apart cleaned up the turpentine bbs and put it back together.

Works like a champ. I only rebuilt it cause it had only 10 hours on the motor. I had the exact same problem.

You can hear the pump kick on but it is NOT generating enough pressure. FITTING FUEL PUMP ELBOW 1 required per assembly 22-14868 - Fitting More info 1790 10 in stock. FITTING FUEL PUMP STRAIGHT 1 required per assembly 22-16604 - Fitting.

1995 Mercury 200 XRI EFI doesnt like idling - HELP 1995 Mercury 200 XRI EFI doesnt like idling - HELP. Post May 20 2009 1 2009-05-20T0300. If the motor runs fine at WOT it likely isnt a fuel pump issue.

Possibly could be a primer but I usually see those cause more problems on top end. Get a spray bottom with 5050 mix. Spray the premix fuel into hole in the EFI air silencer the cast box on the front of the motor.

If the motor takes off it would be a fuel delivery problem. I have once pinched a fuel hose to a carb when reassemble a power head. It is easy to do.

Mercury mariner outboard efi 4 stroke fuel problems fix running rough fuel regulator electric fuel pump. 1996 Mercury 150 efi fuel pump issue. Jump to Latest Follow 1 - 10 of 10 Posts.

Joined Jul 8 2010 69 Posts. Discussion Starter 1 May 31 2012. Hello looking for someone who might be familiar with the above mentioned motor.

I have a 2001 mercury efi 200 boat motor it will run. Sounds like a wire issue as when u lower it u pull the connector out just so it does not make contact with the ign or ur pinching a fuel line. The other issue might be a faulty oil sensor.

Check ur oil level. If its a 2 stroke disregard that. Attach another fuel line to the outlet and clamp it off tightly.

Prime the bulb and keep an eye on that hole in the back of the pump. If fuel is visibly leaking through it your diaphragm is bad. Fuel pumps can easily be repaired using the proper fuel pump.

April 23 2012 012001 PM. I just bought a 19 Cajun with a 93 Mercury 200 EFI motor. The motor just turns and turns when starting but wont fire up all fuel lines primer bulbs and such are good and have been checked.

Someone i know suggested tilting the motor up a lil but that didnt work. I turn the key on and let it prime up for about 15. Fuel Pump Rebuild Kit for Mercury Mariner Outboard.

A fuel pump rebuild kit is needed every so often with outboard motors. The inner rubber diaphragm can develop cracks or pin holes that effect proper fuel flow and inner check valves and springs can break causing complete pump failure. Older motors can have pre-ethanol components that should be.

1999 Mercury 200 efi Not rated yet Sparatically losing power to my high side fuel pump. Mechanic spread apart pins in wiring harness to ecu. Mechanic spread apart pins in wiring harness to ecu.

It ran for half a day and shut back down. Efi electronic fuel injection. We have 1996 200 efi.

Their is a fine mesh filter after the fuel pumpin that housing. That has give us problems. You cant buy one.

Cleaned it carb cleaner. Cleaned it with soap and water at powell once. If you havent changed hose in awhile i would.

From the tank all the way to the fuel pump.