While testing the fuel pressure you can start the engine and stop it and observe how long it takes the pressure to drop. Try starting the engine and if it doesn't start note the pressure reading. Once the engine does starts note the pressure reading. With an assistant observing the pressure gauge snap open the throttle and observe the pressure gauge. If the pressure doesn't go up when you snap the throttle open you may have a bad fuel pump or a leak in the vacuum line to the pressure regulator. If the pressure reading goes up you have another issue that is causing a lean off idle condition like a vacuum leak.

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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD