Fueling problem

[ACLR8R]

Originally posted by azgn
bypass the steel tubing from the vacuum block and run a piece of vac line direct to the regulator......that thing has been known to leak

Cool, I will try that tonight.

 

[ACLR8R]

Finally got around to bypassing the steel vacuum line, and it still does it. Where should I go now. It is really starting to piss me off

 

[Maltman]

Double check your vac block on the tb..especially if it is the stocker plastic garbage (cracks, bad gaskets, etc).

However, my guess is that you have a bad line somewhere b/w the tank and rails....since you state the pressure is fine to begin with but drops slowly with driving or running....then it would make sense. The pump will give you good pressure initially, but the demand of the engine will ask for more than what your system can flow despite have a good pump/voltage/fuel filter.

ALSO>>>Make sure your gas tank vent is clear and "working". Then, if that isn't a problem, start tracing the lines from back to front looking for any odd areas. I've found many cars with plugged vents or bent lines that had this same problem....just had one 2 days ago where the fuel pump pickup line wasn't snugged down on the pump and would start and idle the car, but any throttle and the car would spit/knock/die since fuel was basically going anywhere but into the fuel lines

jmtc