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1992 Johnson 175 Faststrike fuel problems

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gst2002

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" I have a 92 johnson 175 fast

" I have a 92 johnson 175 faststrike and seem to be having fuel problems, I think. I havent had a chance to run the motor for about 6-7 months (military) and when I did start it, it ran fine. I went on a few fishing trips and everything ran great. I trailered the boat from GA to LA (Toledo Bend) with about 1/4 tank of fuel and bought it up to 3/4 tank upon arrival at Toledo Bend. The first day out, I got the boat on plane and it ran for about 300 yards and died. The motor acted as if it was not getting fuel and the fuel "bulb" was tight. After a few minutes of sitting, the motor started fine but once on plane and at full throtle, it died again. The boat would run fine at idle speed or a little over. Once I trailered the boat, I checked the fuel filter and it was dirty, so I replaced it. The next outing, the same thing happened again, it also started after setting a few minutes, once again I checked the fuel filter but it was clean. Not sure what is wrong, any advice? "
 
I had the same problem on my

I had the same problem on my Johnson 140 and the problem was the fuel filter located at the tank fitting.
Rgds
 
" I am willing to give anythin

" I am willing to give anything a go at this point. I will check to see if that may be the problem. To be honest, I never knew there was a fuel filter at the tank fitting. Anyone else have any suggestions? I really need to get this thing fixed so as to get as much time on the water in case I get sent back to the middle east. "
 
"You haven't mentioned any

"You haven't mentioned anything about alarms pertaining to the warning horn sounding. Do you receive a short beep when turning the key to the ON position? If not, the horn may have failed in which case the engine could overheat and seize tight, run out of oil, encounter a fuel restriction etc. Let us know about that.

If by "tight" pertaining to the fuel primer bulb, you mean that it has been drawn FLAT, that would indicate a fuel restriction between the bulb and the fuel supply. The usual cause being:

(Anti Siphon Valve)
(J. Reeves)
Check at the built in fuel tank connection where the rubber fuel line attaches for a "Anti Siphon Valve". It will be (usually) aluminum, about 2" long, and the inner components will consist of a "Ball", a "Spring", and a "Ball Seat". These valves are notorious for sticking and causing a fuel restriction. Remove the valve if it exists, knock out the inner components which converts it to a straight through fitting, then re-install it. If you're uneasy about converting that valve to a straight through fitting, then simply replace it.

On the other hand, If you mean it is hard and full of fuel, I would suspect that the valve in the end of the primer bulb has come apart, the inner portion has reversed itself and been drawn back into the valve body.... which in effect shuts the fuel supply off at the bulb. If this is the case, the cure would be to remove the valve and re-assemble it properly. Let us know what you find.

Joe
"
 
" Joe, thanks for the informat

" Joe, thanks for the information. The warning horn seems to be operating fine. When the key is turned on I get one short tone. When I mentioned the primer bulb, I was stating that it was full of fuel and not flat. The boat will idle fine and run above idle fine, but if I "jump" on it and get up on plane, it will run for a short distance and then cut out and shut down. It acts as if it stops getting fuel. I check the primer bulb at that time and it is full of fuel and fully inflated. If I let the boat set for 5 - 10 minutes, it will start again with no problem. Do you think there may be something in the fuel tank blocking the pick up line when the extra suction is created at full throtle? If so, how would I go about cleaning the tank out? I have a 92 Javelin 389 DC. If you dont think that is the problem, what are your thoughts on other solutions? Thanks for your time and efforts.

Greg "
 
"Greg.... When the engine stop

"Greg.... When the engine stops, the ball is still hard and full of fuel which would indicate fuel is flowing to the bulb but no further (reversed valve at the bulb?)

Reread my previous post.

Joe
"
 
" Joe, I replaced the primer b

" Joe, I replaced the primer bulb and also took it a bit further. I took out the tank, inspected it, cleaned it out (it was very clean to start with), inspected the fuel pick up line in the tank (also in great shape) and when I replaced the fuel tank, I went ahead and replaced the fuel line as well. The engine still dies out when I try to give it full throtle. Could it be getting to much fuel and drowning out? Also, when I had the engine cover off and was starting the engine, I noticed that when I would choke it while starting I would see fuel leaking from the fitting used for winterizing the engine. Is this part hard to replce or do I need a mech to do it? "
 
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