A while back I swapped in 750cc injectors, walbro 255lph pump, and a new Hondata s300.

Now anytime I go to fill up with gas, if I have the car runing while the turno timer is counting down and I take the gas cap off the car dies...To me this just sounds like its losing too much fuel pressure, but I know with the stock injectors and pump it could idle without the gas cap on. Is that normal?

And another thing is when I go to start the car after i get gas. It Won't start unless i give it gas and I have to stay on the gas a little bit for about a minute before it will hold an idle. Changing the cranking fuel trim or post start fuel adjustment does not affect this problem. Only does this the first start after getting gas.

Are there any possible problems here? FPR dying? or is this just a normal thing with large injectors?

 

 

who tuned the car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by krazn &raquo;</TD></TR><TR><TD CLASS="quote">who tuned the car? </TD></TR></TABLE>

Car has a good tune and I am lead to believe this is not a tuning issue. This ONLY happens the first statup after getting gas. Any other time the car starts flawlessly

 

It turned out to be the EVAP purge solenoid. Thanks ginoboy1978 . All I did was unplug it and all is good now. Guess OBD-II EVAP's dont like OBD-I ecu's