My first post here, been lurkin' for a couple months. Since my engine is apart right now in the area you seem to describe, I'm gonna open my mouth.
Quote:
Originally Posted by fiskfarm
For what it's worth I seem to have an oil burning solution.
I picked up a very clean 2000 Trooper with a blown 3.5 engine on the cheap. My son picked up a 99 Rodeo 3.2 in great shape with a blown engine. Both around 100k miles. [snip]
First thing I noticed when we started analyzing what was killing these engines was the way over aggressive pcv system where they not only vent one head to the primary side of the intake butterfly (that's good) but they also create a huge suction (and in our opinion a huge mistake) on the secondary side straight into the intake plenum where during deceleration there is a very high vacuum thru a 3/8 inch hole. [snip]
Facing the engine from the front the problem side is on the right. Remove the hose going from the breather hole on the valve cover to the intake manifold. Plug the hole at the manifold and attach a hobby shop rc air cleaner to the valve cover pcv valve. A 10 minute job that allows air to vent thru the entire engine. Run it for a few weeks keeping a careful eye on the oil level. I am sure you will be amazed. After the last of the oil trapped in the intake plenum passes thru, the engine will run and smell much better as well. No more smoke under acceleration also. Let us know if this helps.
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My '99 SLX has a PCV valve on the front of the driver's side valve cover. The tube goes to the common chamber immediately behind the throttle body. That is the only vent OUT of the crankcase, and is typical of ALL automobiles I know of for the past 40 years or so. On the other valve cover (passenger side) is the tube allowing filtered air in from the air tube. The PVC valve controls the amount of airflow through the crankcase, and doesn't allow unfiltered air back into it.
Basically your idea would defeat the whole purpose of the PVC system on my '99SLX. What I have decided to do instead is make a 'catch jar' based on the ideas at <http://better-mileage.com/PCV.html> After reading their site, you might consider it yourself.
I bought it with a messed over engine and tranny and have spent the better part of two months getting it running well enough I could get it to a shop and have the codes read. Survey says... I have a 'random mulltiple misfire'. DUH!
Good Luck, SK