I am checking various systems in my 91 Camry LE because it read high hydrocarbons in my state emissions test (it failed). One of the things I decided to do was the check the compression on the cylinders. BTW, the car has 181k original miles on the engine and still runs well. While the cylinders read good compression (between 145 and 155# on the cylinders), I found oil on the outside of the plugs (exterior to the combustion chambers) in the front bank of cylinders. The rear bank of plugs did not show the same problem with oil. I can't believe that it would be oil "blow-by" as I wouldn't expect that it would occur on all three cylinders in the front bank but not in the rear. How could this happen?
Al Kondo