Compression Test Results - 165 160 150 65 138 135

[ktm]

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?

[Carl Beck]

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.

[ktm]

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).

[ktm]

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.

[bobc]

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