Yes, 65. I put a teaspoon of oil in #3 (the compresson test results are from cylinder 6 to 1) and the compression only increased to 75. My car is not smoking at all and the oil looks fine. I ran almost completely out of coolant (another story) without knowing it. After filling the radiator back up with coolant, I drove 35 miles home and the coolant level did not drop at all. There are no other signs of a blown head gasket or cracked head.

Any thoughts?

Carbon build up - or a deposit preventing a valve from fully closing.

Did you check the valve adjustment before the compression test? Run the test with a warm engine?

FWIW

Carl B.

Test was run with a warm engine. I did not check the valve adjustment yet, as I adjusted them around 1000 miles ago. It is the first thing on my list to do tomorrow (ran out of time tonight).

Just checked my coolant again and observed that the level dropped a bit. Rechecked my oil and it has thinned considerably. Looks like something is up with Cylinder #3. Oh well, time to accelerate the turbo swap.

ktm,

If the oil starts to look like a chocolate milkshake, you've pretty much figured out the head gasket is blown....take off the oil filler cap and take a look inside with a flashlight. Almost a sure thing if you added coolant to a hot engine when you ran out of fluid.

Been there, done that a long time ago!

Bob