I have a 99 coupe LPT with 129k. Exactly which PCV components do I have to maintain? It starts to get confusing getting information from the 850 and S/V70 because after reading a few posts, I'm not sure what's applicable to the C70. FCP Groton doesn't sell a kit for my year/model or else I would just redo the whole thing. In one post tech suggested the vent box may be leaking, then in another post he says to check all the little hoses for clogs like there is no box. Manual just says to checkthe hose between the air inlet and manifold for clog. So exactly how many hoses do I need to check anddo I have a vent box? I see a hose one on the front of the intake manifold with a crimp, and there's a bunch on the air inlet well tucked away. The one with the temp sensor is the one I need to check? Does that just pull/twist off? Thanks.

 

Yes you have a vent box. They all have a vent box.

Vent boxes do clog up.
But the hoses do clog up as well.

Thats why I keep suggesting to replace the box and clean all the hoses.

The small hose under the intake behind the power steering pump is what clogs up. But then it usually clogs the vent box up.

The crimped hoses are not the hoses you need to clean. In the back of that connection there is a small hose that you need to remove and clean the nipple.

 

Thanks. I took a good look in good lighting and saw the vent box. Previously the lighting has been poor because by the time I get home it's pretty much dark. I definitely feel slight outward pulsating pressure with my hand coming out of the oil filler as well as milkyness on the dipstick. No puff of smoke though. So why does FCP Groton not sell a kit for my year/model?

 

Im not sure why they don't sell them you might want to call them and check with them over the phone.