Hi Guys,
My van (Express 3500) has P0171 code; it cranks good but won't start. The fuel pressure readings are 62psi and then drops quickly to 55, then to 30 in about 15 minutes.
I suspected the fuel pressure regulator or fuel pump. So, I replaced the fuel injector/spider assembly with a rebuilt one, also a new FPR. No change in the readings.
I then replaced the fuel pump (aftermarket) and filter. Still no change in the readings and still won't start.
What else could be my issue? Is it possible the fuel pump or FPR is defective?
Also, the front seal is leaking oil pretty badly onto the crankshaft sensor. Is it possible that could be causing the no start condition?
Thank you for your help and assistance.
I'm going to try to figure a way to deadhead the fuel pump to test it.
My van (Express 3500) has P0171 code; it cranks good but won't start. The fuel pressure readings are 62psi and then drops quickly to 55, then to 30 in about 15 minutes.
I suspected the fuel pressure regulator or fuel pump. So, I replaced the fuel injector/spider assembly with a rebuilt one, also a new FPR. No change in the readings.
I then replaced the fuel pump (aftermarket) and filter. Still no change in the readings and still won't start.
What else could be my issue? Is it possible the fuel pump or FPR is defective?
Also, the front seal is leaking oil pretty badly onto the crankshaft sensor. Is it possible that could be causing the no start condition?
Thank you for your help and assistance.
I'm going to try to figure a way to deadhead the fuel pump to test it.
Aug 23, 2023 at 10:59 AM
