Got my leak down tester today and tried it out. The only bad thing is the hose to the spark plug hole didn't fit so I made a make shift coupler and connected it to my old compression tester hose. It worked but there was a slight leak in the coupling which I don't know how much it will affect the results. I think minimally but I will get a fitting tomorrow which will totally clear that up.

Anyway, here we go.

I did the first three cylinders twice, #2 is the problem cylinder with the oil leak.

#1 18% leak down, 21% leak down.
#2 35% leak down, 35% leak down.
#3 28% leak down, 31% leak down.

These are hugh numbers as far as I know. I think I should be under 10% and definately be under 15%.

I also got a new compression tester yesterday and last night did a compression on the first two cylinders.

#1 150 psi
#2 150 psi

Which was the same as my mechanic's results.

Any comments on these results? Is it possible it could be head related only (poor leak down)?

BTW, these tests were on a cold engine.


Thanks,