burning oil why???
 

Ok...I got this car since February I did tune up oil change all that stuff..This Saturday was the first time I took it for a long drive...total 250kms. I decided to check the oil today and it was all gone!...What happened??. There is no visable oil leak to speak of that I can see or it would be all over my driveway. Anyone know why it would be burning that much oil?...How serious is this?...

Well, if you are burning oil its probably that your piston rings are worn and the oil is getting into the cylinders on top of the pistons where the combustion takes place and gets burned off when the spark plugs ignite the air/fuel mixture.

one other thing whenever I start it up in the mornings there is a hugh puff of blue smoke from the exhaust.

that sounds more like valve guides. anyone else agree?

Agree, but to consume that much oil he probably also has a tired engine.

ok...what do you mean by valve guides and how do I go about fixing it or testing that it is that?

I would suggest doing a compression test first off to eliminate the piston rings. Vavle guides suck just because the easiest way to do them is to remove the head and then do them because you have to remove the valve springs. My old 7m was doing the same thing if it sat a while when I was out of town it would throw smoke for like 10 seconds. But on a lighter note valve guides are cheap to buy :whateva: but that doesnt make them easy to get to. Most people when you get ready to do those you are already there might was well rebuild the whole head. That is what they were saying about a tired 7m it may just be ready for a rebuild.

oil burning
 

Sorry to bring this question back up but i have the same original problem. the oil just disappears within three weeks. and its not throwing blue smoke. oil pressure seems fine and im not loosing any significant power. any ideas.

On eBay u can buy a completely rebuild head with new parts for the 7m for 400$ then you swap them out and send it back if you want

is that the problem, the hole head????

If the problem is only in the head it will just be the valve seals which aren't expensive but difficult to install. Each seal is hidden under the valve spring. How many miles are on the motor?

agreed on valve stem seals. inexpensive but just as hard as a head gasket fix imo.. at least as time consuming.

i would first check your #3 valve cover gasket. #1&2 valve covers.. 14mm bolts and.. erm am i missing anything up there?

a good test is to see if your pushing an air/ oil mix up through your spark plugs while running.. if your pooling oil in your plug galley and see small air bubbles coming up through the sealing part of your spark plug wires.. then yes defiantly valve stem seals

just my 2 cents worth