camanosail
Cadet
- Joined
- Sep 25, 2011
- Messages
- 6
What would cause the fuel rail pressure to behave as follows: ENGINE RUNNING: pressure per shop manual, around 32-35 psi). ENGINE NOT RUNNING, KEY ON: very low pressure, 5-10. We can hear the pump run when the key is turned on and when we took out the high-press fuel pump and tested it in a bucket of clean gas, it seemed to pump fine. Why would the engine running pressure be higher than the key-on pressure?
