dropping fuel pressure
Thread Starter
11 Second Club
Joined: Oct 2005
Posts: 78
Likes: 0
From: Conroe,Tx
dropping fuel pressure I have a 383 with a rear mount gt45 about ready to go to the tuner, it has a mail order start up tune. I have been trying to get the car ready for a dyno tune. Here is my problem. The car is running very fat 10to 1 AFR. I have been running the car against the line lock and at about 4000RPM the fuel pressure drops about 20 pounds to about 20 to 25PSI. I am running two Walbro pumps on two different circuits. I checked all the fuel lines and the fuel filter and actually changed the line between the pump and the fuel filter because the line had a couple kinks. Any suggestions would be appreaciated.
Thread Starter
11 Second Club
Joined: Oct 2005
Posts: 78
Likes: 0
From: Conroe,Tx
I don't know the voltage, but one is on the original wiring the other is #12 wire on a relay. there is power to both at the tank but I can't say if both pumps are running i don't have an Amprobe.
