PCV valve question

turbulence23 · Post by **turbulence23** » October 6th, 2005, 10:46 am

hello.

got a question about this part.

if i am right about naming this thing, its that 90 degree shaped piece on top of the front cilinderrow.

what happens when this thing isnt working correct anymore?

i see people putting inline filters after this thing to prevent oil coming into your intakemanifold.

so what if this thing is busted, does it harm yoor car, doesnt it run a smootly, does it start to smoke badly etc..

or is it not a big of a deal when its broken?

Nd4SpdSe · Post by **Nd4SpdSe** » October 6th, 2005, 10:49 am

When mine was going, my idle was jumping from 500 to 1500 rpms whenever i hit the brake in neutral.

If i remember right, the way to test it is to pull it out of the valve cover while the engine is running, if the car stalls, it's bad.

Spinkx79 · Post by **Spinkx79** » October 6th, 2005, 10:57 am

Nd4SpdSe wrote: pull it out of the valve cover while the engine is running, if the car stalls, it's bad.

Or take it out and shake, if you hear the little ball banging around in there it is good, if you dont hear anything it is clogged.

turbulence23 · Post by **turbulence23** » October 6th, 2005, 11:50 am

Spinkx79 wrote:
Nd4SpdSe wrote: pull it out of the valve cover while the engine is running, if the car stalls, it's bad.
Or take it out and shake, if you hear the little ball banging around in there it is good, if you dont hear anything it is clogged.

thanx... it rattles, so guess it works then...

damn, another theory gone...

prob is, my mx is smoking kinda bad...

couldnt be the headgasket i think. oil and coolant is normal, it isnt really using lot of oil, and the coolant is at the same level all the time...

anybody got an idea?

i replaced my catalytic converter with a straight pipe...

and now its smoking like crazy...

the fumes are really smelly, cant really determin what smell it is...

forgive me if my spelling isnt that good, live in holland...

mxmaz · Post by **mxmaz** » October 6th, 2005, 12:02 pm

Very common once these engines get a few miles on them to burn oil. Valve stem seal or rings is likely the culprit. The car can run like that forever though as long as you keep the engine oil topped off. It will cost more the the car is worth to rebuild the engine, but its a good opportunity to swap in a 2.5

mitmaks · Post by **mitmaks** » October 6th, 2005, 12:17 pm

duh you named the reason. put your cat back on, straight pipe isnt for amateurs

Nd4SpdSe · Post by **Nd4SpdSe** » October 6th, 2005, 12:27 pm

mitmaks wrote:duh you named the reason. put your cat back on, straight pipe isnt for amateurs

HAHA, no kidding...i had one in spring, it was LOUD, smelly and I was puffing blue smoke pretty good too...the catalytic converter burns up unburnt fuel in the exaust from the engine, so with no cat, you have no device to clean up the rest, so you get what's left over coming straight out the the tail pipe

turbulence23 · Post by **turbulence23** » October 6th, 2005, 12:30 pm

mxmaz wrote:Very common once these engines get a few miles on them to burn oil. Valve stem seal or rings is likely the culprit. The car can run like that forever though as long as you keep the engine oil topped off. It will cost more the the car is worth to rebuild the engine, but its a good opportunity to swap in a 2.5

wel funny thing is, the valve seals have just been replaced about 5.000 km back.

so unless they dont go much longer then 5000km, it must be something else...

i am planning to swap to klze in a 1/2 months, but this is really anoying me..

@ mitmaks:

see a lot of guys around here with a catalitic replacer, so why shouldnt it work with me

hgallegos915 · Post by **hgallegos915** » October 6th, 2005, 9:40 pm

get an oil catch can.. it works pretty neat..my valves where pretty clean (on the k8) after only 2 weeks of using the catch can. I did catch some oil there.