1998 V70 rough idle after PCV replacement

charleskennedy23 · Post by **charleskennedy23** » 29 Dec 2015, 21:58

Thanks for the update... Good to know that warped IM is a possible issue when this kind of problem arises and also good to know that there is a fix that doesn't involve buying a new IM.

Post by **cn90** » 30 Dec 2015, 08:36

This warped IM might have come from an overheated engine.

Post by **misha** » 30 Dec 2015, 16:40

How?
It was on the same car and before pcv replacement was ok.

brunocerous · Post by **brunocerous** » 30 Dec 2015, 17:16

charleskennedy23 wrote:Thanks for the update... Good to know that warped IM is a possible issue when this kind of problem arises and also good to know that there is a fix that doesn't involve buying a new IM.

Very true. An extra gasket is considerably cheaper than a used manifold.

brunocerous · Post by **brunocerous** » 30 Dec 2015, 17:17

cn90 wrote:This warped IM might have come from an overheated engine.

That makes sense to me. I hope the engine hasn't overheated before I owned it. My goal is to top 300,000 miles.

brunocerous · Post by **brunocerous** » 30 Dec 2015, 17:18

misha wrote:How?
It was on the same car and before pcv replacement was ok.

It's one of those mysteries, I guess. Overheated engine maybe? It could've been something the first owner did.

Post by **cn90** » 30 Dec 2015, 21:14

Or the gasket might have been junk aftermarket part.

This is why when I fix any cars, when it comes to gaskets, seals, I only use OEM simply b/c:
- The mfg's spent tons of money to do the R&D to make sure the gasket/seals last a long time.
- They make sure the fit is good.
- When using aftermarket gasket/seals, one may feel good for a few sec b/c of the money saved, but chances one will deal with tons of headache, time lost, aggravation from saving $5.

I have done enough repairs in my life and dealt with a lot of headache that I don't need any more of these miseries...

Post by **erikv11** » 31 Dec 2015, 11:16

Good to know it is cleared up, another typical case of a leak at the manifold ...

brunocerous · Post by **brunocerous** » 31 Dec 2015, 16:40

cn90 wrote:Or the gasket might have been junk aftermarket part.

This is why when I fix any cars, when it comes to gaskets, seals, I only use OEM simply b/c:
- The mfg's spent tons of money to do the R&D to make sure the gasket/seals last a long time.
- They make sure the fit is good.
- When using aftermarket gasket/seals, one may feel good for a few sec b/c of the money saved, but chances one will deal with tons of headache, time lost, aggravation from saving $5.

I have done enough repairs in my life and dealt with a lot of headache that I don't need any more of these miseries...

Totally hear you on that. It was a Victor Reinz gasket, which I'd thought was OEM. But definitely a good case for staying with what the manufacturer called for in its spec. Thanks again!

brunocerous · Post by **brunocerous** » 31 Dec 2015, 16:41

erikv11 wrote:Good to know it is cleared up, another typical case of a leak at the manifold ...

Definitely a relief to have it taken care of. That, and I don't have the wife giving me dirty looks anymore when I mention our car.

1998 V70 rough idle after PCV replacement

Re: 1998 V70 rough idle after PCV replacement