Time to address rebuilt engine oil consumption

inertia said

With 8k miles on it ,, if it's burning oil,, it'll show on the plugs..

Take the plugs out and scrutinize each as it comes out,, you're looking to see if the deposits are accumulating on one side of the electrode,, or is the plug base evenly covered in oil..

Then a compression test is in order..

The plugs should tell the story.. Post some pics of the plugs..

hope it helps

Click to expand...

I put a lot of facts in the post but wanted to give the gurus enough information. I'll post the leak down tests in the next post. Or look at the pix first and come back to my comments.

Plugs are Autolite 65s. Here are a few observations.
There is oil on the washers of every plug but, pretty heavy on 1&4.
Also the treads are oily on all plus just a little lighter on 3,7,8.
All insulators have discoloration.
Plugs 4&6 have the most deposits. This is the last pix. I've had a slight miss lately and I think it may be #4.

Compression 1-150psi, 3-148psi, 5-152psi, 7-148psi, 2-148psi, 4-155psi, 6-150psi, 8-149psi. They all build quickly at about 3-4 turns. If i keep cranking they will build up to about 175psi but, I didn't go that far.