WTF fuel pressure idle probs!
04-13-2010, 07:43 PM
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WTF fuel pressure idle probs! i just finished my fuel system and i am having a hell of a time with the car now and keeping it at an idle. i have a twin walbro setup with the 2nd pump triggered by a 4 psi Hobbs switch. using the stock feed line up to the rails which is a -8 line and ends in a Aeromotive boost referenced fuel pressure regulator. the return is a -6 to the Evap line back to the tank. i set the Pressure to 58 psi and cranked it up. NOTHING!!! i loosened the screw all the way up letting only 18 psi through and it cranks and idles perfect. it even has good throttle response! WHAT THE HELL IS GOING ON?! my injectors are Seimens Deka 60s and at idle i am showing 2% duty cycle (this is at 18 psi FP). anyone have any idea whats going on?
