KyleMbn

Hey all, hoping someone out there can help me diagnose this....

Working on my sons truck 4x4 , 350 vortec just wouldn't start. Couldn't hear the fuel pump. Put some fuel down the throat and it would fire but not stay running so assumed fuel pump. Put in a new one & new fuel filter. Still won't start. I have 15 psi at the fuel line port on top of the engine. What should the pressure be going into the throttle body?

I borrowed an engine code reader and it comes back with several codes which from what I can tell shouldn't keep it from starting they are: P0138, P0140, P0141, P0160 & P0161. The truck doesn't have cataletic convertors (he cut them off) so I think most of these codes are related to that.

I have read threads that talk about the distributor module or the knock sensor causing symptoms similar to what I am seeing. Anybody got any suggestions for solutions?
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MDTAHOE

15 psi is too low should be almost 60. What brand is the pump?

KyleMbn

It is a Bosch fuel pump. I pulled it out last night and double checked all the fitting (internal to the tank). It all looks good. I'm returning it for a replacement today cause I can find no other reason for the low fuel pressure.

MDTAHOE

Anything other than AcDelco or Delphi have almost 85% failure rate in the first year. Bosch is not very good at all. Not the first time I have heard of Bosch not working correctly out of the box.