- - efi 502 flooding #8 with fuel
(https://www.offshoreonly.com/forums/do-yourself-boating-budget/282570-efi-502-flooding-8-fuel.html)
whiskeyhangover
08-12-2012 07:41 AM
ok good info and i do thank all of you for your input. im going to tear into it and see whats going on with it. THANKS AGAIN!
articfriends
08-12-2012 11:48 AM
Originally Posted by crownline502
(Post 3751750)
The early mefe systems are almost 20 yrs old. The crud that grows in the vst tank will always win. If it had a drain you could dump every week it would save the seat. The next problem you would have to fix is vapor lock. In my case the po thought he could fix anything. My end of season fix was to remove it all and go to the scrap yard. Marine HEI Holley Marine carb and Merc intake. The best thing I could do with the mess that I had. I lost a few mph on the top end. No vapor lock or gas dumping in number eight. This is the first summer my wife was not all over me saying why wont the boat start after a hard run.
I used to do stuff like that in the 80's when I hated moden technology but even though this Mefi stuff is getting aged , if a fuel cooler is added and the vst removed vapor lock becomes a thing of the past along with VST tank problems. Sorry you were so frustrated , overall I am very happy with gms MPI set-up, the majority of the other parts can be bought acrossed the counter at most auto part stores . After modifying my 502 MPI intake I was able to make 657Hp on my current 540 with the blower belt off and 1115 hp with it on. The incredible thing about modern fuel injection is even running the blower I can still pull a tube at 2600 rpm's and idle for hours thru a no-wake zone which 10 years ago was about unheard of with 1100+ hp, Smittty
whiskeyhangover
08-12-2012 06:04 PM
ok heres what i found..... when i tore into the vst i found the needle and seat was at the bottom of the vst and the tab on the float was broke off that held it all in.....know of any good place to get a float and valve kit?
The Ace
08-14-2012 04:05 PM
Change that diaphragm as well if you intend to keep the VST. That is the reason all that fuel is in your #8.
