does zero compression in cyln #3 mean engine replacement?

[99tahoesc]

I know nothing about this kind of issue but Pep Boys is telling me that I need a new engine after they did a compression test and found that #3 has zero compression. They have already replaced wires, plugs, cap, dist, coil, module, ect....

Can anyone tell me something different than replacing the engine?

If I do have to replace the engine what should I expect to pay?

Thanks, I just feel like I might be getting ripped off by Pep Boys.....

 

[muncie21]

Did someone pull the valve cover and rule out damaged valve train or cam issues? Zero compression could also mean that you have a valve stuck for some reason.

 

[AtomicHoe094]

Can anyone tell me something different than replacing the engine?

SURE! dont go to pepboys lol sorry for being a smart ass

But perhaps rings are gone or the rings could be stuck

any trouble codes? symptoms? whats going on with it?

 

[retorq]

If rings are "gone" you will still have a lil compression, it'll bleed off.

You would have to have a REALLY bad valve either bent or held open due to improperly adjusted lifter or rocker arm or something like that ...

They could have a bad compression guage too I guess.

I guess the good news is that you have a bunch of new ignition components to go with your new engine. LOL

 

[sumo]

Id get a second opinion from a better source. Dealer maybe or get a compression kit and do it yourself. They are not that expensive

 

[faze]

It depends why you have no compression and if you trust this place. Having zero in one and the rest are ok is a little wierd. It's worth going the second opinion route here...go to a gm dealer is my suggestion.

If you need a new motor get a rebuilt one thru gm...they're not a bad price; don't bother getting your's rebuilt.

 

[JKmotorsports]

I'd check to make sure a valve(s) isn't stuck open before anything else.

 

[steamroller]

My money is on a broken valve spring

 

[chistoso]

My money is on a broken valve spring

This or a stuck valve.. Stay away from pep boys for this type of stuff. They can hardly handle oil changes..

 

[Biggwaukegan]

yep.get a new motor. just got a fresh crate myself