fuel flow restriction

[JESSIELSMALL]

I was riding along at full speed, all of a sudden the engine slowed down and the beep was saying fuel flow restriction. It cut off, but started up again, it would run top speed for about 30sec to a minute then do the same thing. I disconnected the primer from the side of the engine, leaving it connected to the tank and primed it until i saw gas come out of it, reconnected it ran just above idle for about twenty minutes and it ran fine. any suggestion to what went wrong. Its a 1991 200hp johnson luper

 

[ezeke]

Re: fuel flow restriction

First off, the fuel restriction and the overheat signals should be exactly the same; continuous alarm. Your system has S.L.O.W. which will automatically drop the engine to 2500 RPM if the overheat alarm goes. It will not go back to full speed again until the engine cools and is turned off and restarted.

If you are sure that you are not overheating, you will need to work your way from the fuel tank vent, insuring that there is no obstruction.

 

[tashasdaddy]

Re: fuel flow restriction

yeap!!

 

[JESSIELSMALL]

Re: fuel flow restriction

First off, the fuel restriction and the overheat signals should be exactly the same; continuous alarm. Your system has S.L.O.W. which will automatically drop the engine to 2500 RPM if the overheat alarm goes. It will not go back to full speed again until the engine cools and is turned off and restarted.


The engine was not that hot and she was peeing like a champ, even if it has great pee, can it still over heat

 

[ezeke]

Re: fuel flow restriction

Yes. The tell-tale lets you know that the water pump is working; it does not indicate that the water is going through the cooling circuits around the cylinders.

It is fairly easy to have one bank of cylinders overheat and not the other, but when the temperature alarm goes off, the engine is already nearly hot enough to boil water at sea level, so you should be able to tell by putting your hand on the cylinder heads; If you can't keep it there for a few full seconds, its too hot.

 

[HighTrim]

Re: fuel flow restriction

I beliebe you are getting the fuel restriction buzzer.

I would start by checking your built in tank vent, ensuring it is clear, and anti syphon valve, they are notorious for sticking in a semi closed position.

If those check out, start going over all fuel supply lines for leaks, damage, cracks, etc...