Fuel Pressure drops 5lbs on accel; then goes back up to where it's suppossed to be.
12-04-2006, 09:36 PM
#1
Fuel Pressure drops 5lbs on accel; then goes back up to where it's suppossed to be. What do you guys think. I know you have to disconnect the vacume line while checking fuel pressure. I just put a brand new walbro 255 fuel pump in. Do you think I did something wrong? I have lean sparkplugs on the driverside. What could this be? It's missing after it gets warmed up at 2500 and up and it's idling at 1300 rpms? Any ideas?
12-05-2006, 09:45 AM
#3
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If the car is only running lean on the driver's side, then the fuel system, all the way to the rails, is fine. If it's a whole bank, I'd rule out a bad injector as well. O2's will cause one bank to run a different a/f than the other. How lean do the plugs look? How do the passanger side plugs look?