Too much crankcase pressure, popping oil filter seal/dip stick. PCV?

[ricky_rockstah]

So I've been searching this evening looking for an answer to my frustration, my needs haven't quite been met.


I have a fairly low mileage motor 50-60k (87 on odometer) with low compression. (130's)



I started boosting the car and the old dried out dip stick would pop up from time to time.

I did my routine mainenance and turned the boost up with my MBC. I popped off my oil filter seal.

I found the problem and tightened the bolt on the housing.I guess it had worked itself very lose over the last 12 years... I also bought a newer dipstick that sealed well.


Tonight, I pulled off my stock catback (in anticipation of an exhaust upgrade) and changed all of my fluids , I was making higher than usual boost thanks to the *much* less restrictive exhaust and popped up my dipstick twice and in other news, off went another oil filter seal, that is 3 seals in two weeks.

the main crankcase vent is still plumbed into my stock intake, but still have excessive pressure issues (obviously) maybe a bad PCV?

As far as the oil filter popping off, my oil pressure gauge isn't very helpful and I haven't successfully diagnosed this further than perhaps I have a bad oil filter housing.


What's up w/my poor 1g?

 

[GVR4592]

You pointed out that you have low compression, and you pointed out that you may have a bad pcv valve. Sounds like you already know what the problem is or at least what it might be. 130 compression isn't so great. You can dump some oil (teaspoon or so) down the spark plug holes and check the compression again, if it goes higher than before than chances are your piston rings need replaced. I would just replace the pcv valve since it's like $4.

 

[majik2k5]

With low compression, if your rings are shot then there's the reason for you crankcase pressure right there. 130 compression isn't too bad, but it's not the best either.

 

[v2ner]

Makes me wonder how many quarts of oil are in the engine.

 

[ricky_rockstah]

Makes me wonder how many quarts of oil are in the engine.

about 4.3-4.5

 

[brodiedehass]

Perform another compression test. This time do it with the engine warm and throttle plate blocked open (if you already didn't). Check the compression once then again after put 1-2 teaspoons of oil in it through the spark plug holes. If if your test drastically increases then your piston rings are not seating correctly.

(sorry this ended up looking just likes GRV592 reply)