Truck has lost pep

[firefighter_2319]

hope someone can give me some ideas here. i changed intake gaskets on my truck, 97 5.7 vortec. i marked the distribitor and rotor before i removed it. changed gaskets and installed the distribitor the same way as i took it out and timed it. its been like this for about 4 months now and been checking everything and changed everything but seems like it has lost pep. especially 1st and 2nd. changed fuel pump and filter, got good pressure in my exhaust so i thought it maybe the cats....but i don't know how good exhaust pressure should be. and ideas??

 

[Horns]

The timing on Vortec engines has to be set through a computer.

If that is what you did, then I would suggest checking for vacuum leaks since you mentioned it happened after you replaced the gaskets.

 

[1997chevydriver]

hope someone can give me some ideas here. i changed intake gaskets on my truck, 97 5.7 vortec. i marked the distribitor and rotor before i removed it. changed gaskets and installed the distribitor the same way as i took it out and timed it. its been like this for about 4 months now and been checking everything and changed everything but seems like it has lost pep. especially 1st and 2nd. changed fuel pump and filter, got good pressure in my exhaust so i thought it maybe the cats....but i don't know how good exhaust pressure should be. and ideas??

How did you time it? Any SES light?

Sent from somewhere in MN

 

[firefighter_2319]

no didnt use i computer, just put it back to what the sticker on the fan shroud told me to set it at, could that be my problem? one this is that it does not seem to be misfiring or popping. or does that matter?

 

[Horns]

It could seem to run fine but still stumble and lose power. But I would really check for vacuum leaks also.

EDIT: Let me rephrase that, it could SEEM to run fine. Ie, not miss.

 

[firefighter_2319]

It could seem to run fine but still stumble and lose power. But I would really check for vacuum leaks also.

EDIT: Let me rephrase that, it could SEEM to run fine. Ie, not miss.

do you know a ball park on how much that may cost by chance?

 

[1997chevydriver]

When I went to the dealership to have it done it was $50

 

[firefighter_2319]

wow thats better than what i had in mind i may get better gas mileage when i get that done...least i hope anyway

 

[1997chevydriver]

Prices may be different in your state remember.

 

[firefighter_2319]

Prices may be different in your state remember.

yeah you have a point, gotta be better that IL, they are the one of the higher taxed state in the U.S