Recently installed a double pumper, and seem to be having a fueling issue I cant resolve. I have replaced the FPR, had my injectors sent out and flow tested. Double pumper double checked and Im sure the 2nd pump is activating. Idk what else to check. I have a Buschur Double, stock lines, FIC 1450's and on E85. Last thing I can come up with is I have gotten some bad fuel? Car has been boost leak tested and fresh plugs, Im at my wits end... Any input is outrageously appreciated... I can attach a Evoscan log if someone can tell me how?

 

Time for COP system if you don't already have? or as you said it could be bad fuel. How was it right after the double pumper install and tune?

 

I have a spoolin up COP, car has been wonky since and im in the middle of a tune right now. Car was running good and then it just seemed that it wasn't. I cant explain it

 

Check your double pumper, I think one of the fuel hoses to the pumps is either lose or came off

 

well if you're in the middle of a tune I think that would explain it

 

Pumps/lines are fine. I have checked them repeatedly. Middle of my tune is not the problem, car was pulling hard

 

First thing would be so install a fuel pressure gauge to eliminate a fuel supply issue.

Who's tuning the car?

 

I agree it sounds like a possible fuel problem.

 

what do you mean "popping"?

 

What's the gap set at on your plugs?

 

mmm...If you have checked your fuel system aan and you have a COP kit...could be fouled plugs, or bad gapping.

 

^ true. it almost sounds like too big of plug gap.

 

Tom is tuning the car, gap was .017 per tuners instructions. I'm gonna pull the plugs and COP today and check things out. I had installed a FP gauge and on the first wot pull it pegged and 100psi and stayed there. I ordered another sender and it did the same thing? I don't wanna keep buying senders so I was trying to figure the issue out before replacing again.

 

Since it hasn't been mentioned. Have you checked Cam Timing? Perhaps you skipped a tooth somewhere. Also if aftermarket cams where installed did you have them degreed?

 

cams have been installed for years, nothing internal changed. I had the timing belt changed when I had the motor built a year or so ago