Hello, This truck has a long crank time, but idles fine when it starts, and has decent acceleration up to about 2000 RPM. Then it surges badly and will never go any higher, whether in Park or driving. I did a fuel pressure check and found about 55-60 PSI when key is turned on, but it immediately jumps to 90 - 100 PSI when the engine is started, and stays right close in that range while accelerating, and even while surging at 2000 RPM. Seems like the fuel pressure regulator is faulty. I will tell the customer it needs to be changed, but my question is this: will such high fuel pressure create this running problem? Customer is looking for results, and I would like to be able to predict an improvement! Thanks for any comments.

Jason Wenger
Manager
Wenger's Electrical Repair
North Eleuthera, Bahamas