sittin-sideways Posted February 25, 2008 Report Share Posted February 25, 2008 ok guys my fuel pump went to crap, so i want ahead got me a welbo 255 fuel pump , car run fine. problem my car is wasting to much gas , i know upgrade a fuel pump cant make you waste more gas or can it ? plus i know am runing super rich, cuz when i turn off my car its shake, and turn back on then turn off. but mostly it just back fire after i turn it off , everytime i take ride. well yesterday i put 20 doller in it, almost half.and by the end of day i was on eeeeee. i was wt..... is it fuel pump or car need to be tuned and tune up?? any tips guys. Link to comment Share on other sites More sharing options...
Alcyone Posted February 25, 2008 Report Share Posted February 25, 2008 check for leaky injectors ones that didn't leak may leak under the higher pressure of the walbro. also if you want gas milage STAY OUT OF BOOST!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted February 25, 2008 Report Share Posted February 25, 2008 You have either leaky/faulty injectors or a bad fuel pressure regulator. Link to comment Share on other sites More sharing options...
sittin-sideways Posted February 26, 2008 Author Report Share Posted February 26, 2008 oh ok guy thank. Link to comment Share on other sites More sharing options...
brattesani Posted February 27, 2008 Report Share Posted February 27, 2008 check your FPR, it should just be sending the extra fuel back to the tank. Link to comment Share on other sites More sharing options...
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