Amount of oil poured into the cylinder have to be accurate does not have to be accurate. A couple pumps of an oil can, or a capful of oil -- but make sure all four spark plugs are out. See Engine compression test

The valve stem seals go bad due to:
* Heat causes them to get brittle and break
* Heat causes them to get hard and so stop sealing well
* Tearing or other physical damage sometimes occurs
The don't dry out as they are surrounded by oil.

You can replace the valve stem seals without removing the cylinder head. It's far more work to remove the head.

I will do the compression test then, does the amount of oil poured into the cylinder have to be accurate?

Are hardened stem seals due to drying out?

Thanks heaps

do a compression test, then dribble a couple of CC's of oil down each pot and comp test again.

If it gets better - its the rings on the pistons
If it stays the same, its a stuffed valve, or valve stem seal.

Although my money would just be on hardened valve stem seals. Put some oil for "older" engines in it, and give it 500km. If it doesnt get better, you will need to pop the head off and replace them.

Hey, just bought a 1980 b310 sunny with an A12 and it is blowing blue-ish smoke. Only when revved quite a bit.

Car had been sitting for about 8 years prior to me buying it.

Im assuming burning oil, since it smells quite nasty.

Is a compression test the first step i should take? and if that is okay where do i go from there?

Also, are there any preventative things i should do to the car since it has been sitting such a long time?

ANY help is very much appreciated. Thanks