1994 volvo 850 oil leak under valve cover and pcv clogged

hanzbe420 · Post by **hanzbe420** » 18 Dec 2010, 17:22

no that wasnt my picture that was just one i found on the internet. mine just like sits on the other hose, u cant push it in or nothing. but it has to be clogged for sure! Do you have any pictures of what exactly i will need to get to fix this.

Post by **j_cd** » 18 Dec 2010, 17:33

There are several good write-ups. Here's a few.

www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=28487
lakesidedp.com/uploadpics/pcv/
www.matthewsvolvosite.com/forums/viewtopic.php?p=15744#15744

So what I said above still holds then. If your PTC is disconnected, pull it out of the way (towards the engine) without breaking the plastic PCV lines and take off the turbo air intake hose. If it's damaged just replace the whole thing. If it's not chipped, you could just clean the PTC Heater really well and pop it back onto the intake hose. If the PCV lines aren't broken, hook it all back up and see what happens. That may solve your problem without having to replace the PCV system.

You'll have to feel the rubber jacket (along the side of the engine where the vacuum hoses run) to see if one or both of the plastic PCV hoses are broken inside there.

hanzbe420 · Post by **hanzbe420** » 18 Dec 2010, 19:27

If u look at this diagram that hose labeled M is not hooked up to the nipple do u no what this hose is and goes to? so yo are talking about taking out hose K cleaning part D according to the diagram?

Post by **j_cd** » 18 Dec 2010, 19:53

Yes that's the smaller of the two plastic hoses that go inside the rubber jacket along the side of the engine to the PCV Oil Trap underneath the intake manifold. Both K and M go inside L (the rubber jacket). Yep, clean the PTC and reattach everything the way it is in the diagram. I think D stands for clamps though. I put a little petroleum jelly inside K when I put it back on the PTC Nipple so maybe it'll come off more easily next time.

Is the Oetiker clamp still on K? You can wedge a small flathead screwdriver in the opening on the outside of the clamp and wiggle it back and forth until the clamp comes loose or breaks. They're not reusable anyway so don't worry about it, you'll need a new clamp. Just don't break K or M or you'll have to do the PCV.

hanzbe420 · Post by **hanzbe420** » 18 Dec 2010, 20:05

OK ill check everything out tomorrow and get back to you thanks bro for all your help so far, ill update it tomorrow after i check it out and save this thread so u can check it after thanks bro!!

Post by **j_cd** » 19 Dec 2010, 03:10

No problem man. Here's another tip for removing the air intake hose at the bottom where it attaches to the turbo air inlet. Stand over by the passenger side front wheel and jump up on the engine from there. If you have a blanket, pillow, rubber mat, pizza box, or combination thereof, whatever... put that over the engine first so you don't get poked in the ribs.

This is the easiest angle to get at the clamp. Use a long flathead screwdriver. Once the clamp is loose, lean in from the front or drivers side of the car, whichever is easier, and pull the air intake hose off while making sure those PCV lines don't get snagged.

Post by **j_cd** » 19 Dec 2010, 10:59

BTW, when I say "jump up onto the engine", I mean with your belly, so you're laying on the engine. I had the car up on jack stands for months. At ground level the jumping part isn't really necessary, but the padding is still helpful.

ambishop · Post by **ambishop** » 09 May 2012, 02:55

I just Cleaned my Fully Clogged PTC, which was really quite easy http://lakesidedp.com/uploadpics/pcv/#ptc

Mine was fully clogged and I my car was leaking oil from the oil filler cap.

I wanted to post a nugget of information on how to clean the PTC. After removing the PTC vacuum lines and leaving the Large elbow in place, I duct tapped the large elbow to the end of a garden hose and turn it on with the PTC pointing into a bucket. Since mine was fully clogged the end cap with the holes in it shot out of the PTC into the bucket. I then cleaned up the insides of the PTC really well making sure the vacuum line was not clogged, My vacuum line was fully blocked as well and using a very small tool I poked the crud out of the vacuum line and then poked each hole in the end cap to clean it out. Once everything was very clean I put it all back together on the garden hose again and gently sprayed water until it flowed freely from all of the holes and vacuum line.

Then I took it off the garden hose, cleaned all of the water out and resembled.

Once everything was buttoned up, no more oil splashing from oil filler cap and vacuum lines work perfectly.

hanzbe420 · Post by **hanzbe420** » 16 May 2012, 07:17

yes when i did my pcv. I just bought a new turbo air hose because the old one were the big elbow connects, it wasnt holding into the plastic slot. and it was pretty much stock and old. There was a hole actually were it connected, cause be4 i had to use glue to hold the piece into the hose and it just got old lol. but the pcv was a little different for my car because, it dont have the vacumm hose at the manifold and it goes from the ptc strait to the vacuum tree. and theres a big metal pipe under the manifold that you
have to take of. i guess there was two pcv kits. 1 was with bigger box witch is what i needed cause its an earlier model 94. so that was kinda tricky. but with jack blacks guide and help. and others help i managed to lay my laptop right on the engine and read the guide as i work. my dad was pretty amazed. that i never fixed cars before then i come over with a laptop tear half my engine apart and put it back together and still runs till this day ha ha. Also i didn't or have never used a torque wrench and i kinda stripped one of the bolts to the manifold. but it hasn't leaked yet. next time if i have to do it again on this car. i will use a torque wrench. so after the pcv i did a sea foam and changed the oil. then the oil cooler lines started leaking. so there was this guy on Volvo speed that lived in the same state as me and he made his own oil cooler lines so i went to his house payed em 100$ ad he helped me put them in! haven't had a leak from those yet either. now I am dreading the 140 k maintenance. I need suspension bad. and i am nervous about doing the timing.