jaykenneally
It didn't have any sealant on it before and still doesn't have any, doesn't leak though... I think haha.
Yeah I treated the rocker cover like a cylinder head and tightened it accordingly :)
tmovlovs
It will !! Give it time and when the oil works its way out it will be a steady river :-)
One thing about doing it that way is the cams will be tilting in toward the block risking cracking the cam journals at the front of the head, no big deal, just loose aluminium floating around.
Also this is a risk to stripping the M7 threads as when you're torquing down you're not only overcoming the valve springs but you're also overcoming the hydraulic tensioner further risking stripping the threads. I know it may have worked the first time but I would only risk it once.
About the Permatex you can use 51813 or the genuine Volvo stuff which is pricey. New spark plug O rings (5 of them) which cost about 0.75c each to avoid filling the plug wells with oil, too.
jaykenneally
Only planned on doing it once so I think she'll be right. I didn't know the rocker cover on these cars actually held half the crap in place, I probs wouldn't have bothered removing it if I did haha. Oh well! I just pulled it down the same way the Telstar came apart. We'll see how tough the old P80 motor is shall we?
jaykenneally
Already started dripping a little oil on the back, it was coming out where the bolts weren't quite tight enough so I did em up a bit more. Hopefully it holds off. If not I guess I'll have to pull it off and seal it this time haha.
AshDVS
All part of the learning experience I guess.
If you're going to tackle some of these sorts of things, a reasonable workshop manual would be ideal.
nickm
Ex850R
Take can belt off next time , you may get the cover off again without damage but it may happen as listed in post above.
At least you are having a go , that's what I do , if I get stuck , google ....
I should get a manual...
jaykenneally
If that cam belt has to come off then I may as well change it, but I'd rather not haha.
I think it'll be okay but ah yes, the familiar gasket maker. My old Telstar lived on that stuff...
I should probably get the manual as well....
nickm
Make sure you use the one above Anaerobic no. 51813
jaykenneally
Will do thanks. Im guessing thats something to do with the aluminium head/block and Volvos being generally fussy?
AshDVS
Looking at the photo above, the distributor end of both camshafts are definitely not completely seated.
Remembering that the cam cover actually also forms part of the journals and that shells are not fitted, having an oil leak at this point may very well be getting away with this approach pretty lightly.
tmovlovs
The other issue that I've noticed occurs with no proper diassembly is that the cam seals may not seat squarely and cause further leaks. Also the cam sensor ring can damage the cam sensor (depending on where it has stopped) because of the tilt of the cams. I always drive new seals in after resealing cam covers. That is usually a 5-6 hr job with proper preparation. The anaerobic sealer dries in the ABSENCE of air unlike RTV silicon. You can leave the stuff on a metal surface, come back in a week and it will still be wet.
Not having a go @ you Jeremy just trying to prevent bad practises from circulating so as to help other forum readers :-)
jaykenneally
So, putting aside the minor mistake of removing the rocker cover and causing a minor oil leak, Im not sure if there is anything else wrong with this car.
It doesn't exactly run silky smooth, like if you sit in the car you can feel the idle isn't greatly smooth, not that I really care but this is background info.
Im thinking something could be wrong with my PCV system. Before I fixed all the broken pipes, the car would stall if you removed the oil cap. Now that i have replaced the pipes (two smallish rubber hoses were broken) and cleaned out the black thing under the intake manifold, the car will still run fine with the oil cap removed. I believe the 850 stalled when you removed the cap (before it blew its motor) and then after it blew its motor it would run without the oil cap. So Im mildly confused of what these engines with a working PCV are supposed to do. Side note: It needs a bloody good service.
jamesinc
So my reading of this is if you take the valve cover off you may as well have the head blueprinted while you're at it.
nickm
@JeremyK sounds like an air leak somewhere, as long as your engine mounts are good.
You should be pulling a bit of a vacuum at the oil cap at idle.
jaykenneally
Head blueprinted?
I should really subscribe to that guy he seems to know everything haha. My rear main seal is good but I have a feeling my camshafts seals need doing.
I replaced two rubber hoses and the engine ran a lot smoother after that (and my ECM light disappeared) but I havent checked the PCV haha. ill do it now.
jaykenneally
Update: Just took the car out around the block. Not allowed to drive very far unregistered so I drove it like I stole it and it heated it up pretty quick. Came back home and performed the above three tests.
1. The test of pulling the dipstick out. No smoke at idle, but did produce a small amount when revved, had to rev it quite hard to push it out so Im not too stressed about that.
2. The test of covering the dipstick hole with a glove. I didn't have a glove so I used a plastic shopping bag. It tried to suck it in a little bit so thats good.
3. The test of covering the oil filler hole with aforementioned plastic bag. Same thing, tried to suck the bag inside.
So all in all PCV is good I think.
Oh and also. The oil that has been sitting on my exhaust manifold hasn't burnt off and I thought it would have. So before checking the PCV and warming the car I cleaned the oil off so there is no stain. I did this because I thought the engine was only spitting oil out when I drove it hard so to test it I cleaned it before I drove it.
Im surprised because so far so good. No oil marks on the exhaust and the car was running for ages.
It does have a slightly hot/burnt oil smell but there is remains of oil on the rocker cover still and degreaser is everywhere (this engine was filthy) so maybe if I wash it all down it will go away.
Thoughts? May have got very lucky....
Ex850R
Don't bother with a Tatts ticket this week , you may have used your luck for the week up....
I was expecting a question on how to get plastic bags out of the motor for a second...
jaykenneally
I will give the engine the clean of its life (its still filthy) run it and drive it like I stole it for the next week and update you.
Hahahah no lucky it didn't go in, although it did try pretty hard!
jaykenneally
Revival of this thread haha.
So this car has been sitting out the back for a while, waiting on some new brake pads, discs, hoses, a new timing belt kit and water pump and for me to seal up an oil leak before it gets roadworthied.
Today I started it and it ran really rough, i kept it running for a bit, but it seemed to be misfiring. eventually it was idling smooth but the moment you accelerated it would misfire, not stall or anything but it had no power at all. i put it in neutral and revved the crap out of the thing and it seemed to help for a while, it ran well after that. i drove it around in circles for probably a good half an hour, and it was getting pretty low on petrol and then it started doing it again, misfiring under load and stuff. revved it and stuff and it didnt really help.
we drove the car to the servo just around the corner from my house and put some petrol in it, only about $15 worth. It still ran rough after that, so i did lots of full throttle starts and stops and it sort of helped, it was beginning to clear through, as i was putting the car away it started roughing again.
So not sure what the issue is with it. Ive never had something like this happen before on this car. Mum, myself and the postman who came by to help when the bonnet was up in the street (Im not even joking) suspect its fuel related. The car was low on petrol, the car has been sitting in my driveway since about August, and prior to that it had sat for a few months as well. The petrol was low when we bought it, so I syphened out the 850s petrol and put that in and now its drank all of that so its low again. I dont know when the fuel filter was last changed either. It probably also needs new spark plugs but thats probably unrelated as its been running fine before this.
I just wanted to see if anyone had any other ideas. I did take a few sounds of it doing the sputtering/misfiring but havent uploaded or anything yet.
