RE: help please: son w/'97 5.7 Vortek, int. power loss
 

Start simple with the fuel filter, look at the connections to the fuel pump as well and see if they are corroded and making poor contact. Next run some injector cleaner through.

RE: help please: son w/'97 5.7 Vortek, int. power loss
 

Thanks, Smoke, and All. Last report is he's delayed leaving the Coast so he can work on his truck. Even I had forgotten those things had the fuel filter on the frame rail. He did not know at all and is changing it. He DID say he had changed the fuel pump within the last year. So I think we're headed to injectors if the filter doesn't do it.

Those also had another fuel filter under the hood didn't they?

I'll update when he gets over here, and we'll hear from time-to-time as this unfolds anyway.

Dennis

RE: help please: son w/'97 5.7 Vortek, int. power loss
 

INJECTORS WOULD CAUSE A MISS,NOT A SUDDEN POWER REDUCTION

RE: help please: son w/'97 5.7 Vortek, int. power loss
 

I second, (or third or fourth) the fuel filter and pump idea. If you never changed the fuel filter, do it anyway. Then check the fuel pressure.

RE: help please: son w/'97. power loss: Solved
 

I promissed an answer when this trouble was resolved. It took weeks to get everyone together over the intervening 300 miles.

I's fixed.

Problems: Several bad contacts/components inside the steering column. That cleaned up all check engine lights and other failed components.

Lastly, poor running was a....get this....cracked block.

One replacement wrecking yard engine and he is finally on the road.

Thanks to everyone, Dennis