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-   -   502 With side whipple help (https://www.offshoreonly.com/forums/general-q/368052-502-side-whipple-help.html)

flawlesson24z 08-16-2020 11:09 PM

502 With side whipple help
 
Can anyone tell me why i could possibly have fuel coming out of my flame arrestor / throttle body?

Engine is a 1994 502 EFI that has an adjustable fuel pressure regulator with the return back to the tanks (No more Cool Fuel /VST). I checked fuel pressure at the rail and it is at 40 psi. No Vacuum leaks.

Boat will fire up on a cold start but will immediately die if i do not give it any throttle(smells rich). Once i give it throttle for about 10 sec. and bring it back down the boat will idle fine but just a little rough.

Boat runs great from 2000-4000 RPM but i noticed i cant get over 4100 RPM. Once i do the engine just seems to fall flat and Loses all power.

Engine has an adjustable fuel pressure regulator with the return back to the tanks. I checked fuel pressure at the rail and it is at 40 psi.

i did upgrade the CAM to a roller. I had to get it tuned but the day we tuned on the water it was too Choppy and could not get to WOT. Can this be a tuning Issue?



https://cimg9.ibsrv.net/gimg/www.off...95a0441ca3.png

sutphen 30 08-17-2020 06:45 AM

the 2 injectors by the throttlebody,,ones stuck open

flawlesson24z 08-17-2020 08:40 AM


Originally Posted by sutphen 30 (Post 4753263)
the 2 injectors by the throttlebody,,ones stuck open

thanks. I just had all the injectors done about 3 months ago. I will pop them out and get them checked out.

sutphen 30 08-17-2020 09:22 PM

disconnect them electrically,the ecu trigger wire could be grounding out.that would make them flow all the time when the key is on.


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