PVC and Rear Main Seal

[Maasai]

Hey! Did you clean your PTC nipple? Jablack had a write up about it and i found mine to be clogged as hell. kind of makes your PVC kit replacement zero work. will try to upload mine as before and after.

[KRUZNBY]

If you want to know if your PCV is working after replacement, pull the off the hose above the PTC and start the car up. If it's blowing out, it's working. If not, it's plugged somewhere. After I replaced the PCV system, I still had smoke coming out the dipstick. I just have more blowby than the PCV can handle.

[remark90]

Ok, so I know its been a while since I posted but it's been cold here and I have to work on my cars outside. I took the car apart again yesterday to inspect the routing of the hoses and it seems correct. I tried to reverse them but then one would be hitting the Knock sensor and ultimately not be quite long enough. Plus the ports on the flame trap are a little bit different in size which made one hose loose and the other tighter than hell. put car back together like it was and made sure all clamps and hoses were installed. also tried to ensure everything was clean and open with no oil residue or blockage. Still have a pretty big oil leak and vapor coming from dip stick tube. What am I missing?????????

[reds70turbo]

Hard to say but I did the PCV on my son's '94 850 non-turbo and still the gusher from the dipstick. I'm about convinced that it's in the oil pan- a hard right turn for the oil coming in from above, via the pcv breather box. I've heard the only real way to remedy this is to take the oil pan off and go from below. Any one concur, or have other opinions on this?

That PCV passage could be clogged, it is the little square opening as seen here:



In 60K miles my PCV system was done twice, faulty URO parts only lasted 45K or so, Genuine Volvo parts were installed at that point. That being said I still found major gunk in the opening when I had my pan off. I cleaned off the cardboard prior to cleaning the passage, everything you see here came from it.

[oh-la-la]

That happened to me after replaced the PCV kit too, smoke still coming for dipstick. Last month I decided to tear things apart again and everything looked fine, holes on block were clean, PCT was also clean but PCT vaccumm hose nipple was totally clogged, so I cleaned it and also replaced the plastic hose that runs from oil trap to PCT to copper pipe. Untill now there is absolutely no smoke from dipstick.

[remark90]

Ok, going to look into the PCT and it being clogged. Can someone tell me the order in which the hoses come off the flam trap? What Im asking is does the back nipple go to the top of the engine and the front nipple go to the PCT or visa versa?

[jblackburn]

The two hoses branching off the PTC nipple go to the oil separator and passenger side of the intake manifold. The larger vacuum hose all by itself goes towards the front of the engine to a check valve.

[remark90]

Alright, all hoses are routed correctly, jackburn the pictures helped, had the hoses on the flame trap right all along. I guess Ill have to dig deeper and double check that both holes in the block are clean all the way through, which I believe they are. I know I'm missing something here because I have a steady stream of vapor coming from my dipstick! Please keep the ideas coming, Kent.

[wheelsup]

Might be your rings

I took my dipstick out and put a heater hose on the top, and routed it down to the underside of the car below the battery. Drove 2000+ miles like this so far. It keeps the pressure from blowing oil out.

[remark90]

wheelsup, I might be doing something like that soon to see if my oil leak in stopped or at least decreased, until I can figure this damn car out!!!