Originally posted by inspyral
Have you done a compression or leakdown test? Do a compresssion test. If you get low compression on one cylinder, drip some oil in that cylinder and retest. If compression goes up, the rings are gone, if it stays the same, your valvestem seals are gone.
Here's what happened. The shop did a comp test and it read 200-205. But after they would start the car and drive it around, do the compression again, it would be 180ish. But if they let the car sit, and do the comp again, it would read 200-205. The mechanic told me that it's collapsing rings, but we didn't add any oil to the cylinders to see. Funny thing is, my car was at the shop getting some R&R on the head, but after the head was reinstalled with new seals and everything, my car started smoking. It's a long story...
