95Coyote

Today when I was tearing down my motor to try and find out why it wouldn't start I noticed that there was oil in the breather tube, discoloration on the throttle body, and oil puddled in the bottom of the intake manifold.

What is causing this and how do I fix it? Thanks for your help.

tech2

clogged pcv system or xs blow by gases into the crankcases are 2 possible causes.
do a dry and we compression check before you tear it down.

95Coyote

Too late to do before the tear down. It's already been torn down. There is no compression because the intake valves are bent and stuck open. I suspect it slipped time because when I opened the valve cover there was slack in the timing chain also.

I did some research last night and I couldn't find where the 2004 2.2L ecotec had a PCV valve. Any idea where I might find this pcv system so I can clean it?

tech2

it probably has a fixed orfice for the pvc system.


the engine uses oil pressure to help tension the timing chain. if you run low on oil and drive hard the chain will jump.

95Coyote

Thanks for the info

Rednucleus

I'm no engineer, but that sounds like kind of a hazardous (read stupid) way to keep a chain tight.