I've been chasing a mild case of knock for some time. I get part throttle knock all the time. It's not bad, but it's enough to bug me. I've also got 97,000 miles on the car. So, I decided to do a leakdown test just "for grins".

Results:
The meter has values as well as ranges... bad, moderate, good. These reading were all well into the "GOOD" portion of the meter, but as I understand it, they should all be very close. Cylinder #2 looks suspect to me.

We took several readings and the results were consistent except for cylinder #2. It varied a bit between 15-21. Mostly it was up around 20.

I was unable to tell where the extra air was going. I checked the exhaust, dip stick hole, PCV, radiator, intake.

I think I'm going to run some Sea Foam through it as a first step. Thoughts?

 

i did a leak down. i was 6% on all cylinders.. i beleave the book should tell you what is good mild bad. but if i recall i beleave 15% or less was in the good. 20 i would still say your fine.

 

also doing this from a hot motor to a cold motor will show different outcomes.

 

The engine was warm.

 

your fine bud. i got 60k on the clock. also did you use upto 100psi??? you should if you dident. also turn the motor from the cam or the crack.... do this after you feel you are at TDS. this will insure you that you are. if it starts to leak more then turn it back the other way till it starts to leak more again. then go back again but dont let it leak again. a good trick if your care full is to put a loooooong screw driver into the cylinder and watch it go up and down. this will help you determine your approaching TDS.