Cold or warm compression checks..or both?
Got the factory manual CD...200dpi scans...it sucks a little there.
My question is...Mercedes recommends 80 degrees C for compression checks...all of mine were done at stone cold (why we got rid of one car)...So, which one? As is predictable, the stone cold readings are dramatically different from the 80 degree readings.
While I have not yet done a comparison on the cars we still have, on the one we got rid of, the warm one was at 400 as opposed to 190 cold (on the cylinder that was low...the others were over 350). What does this indicate (a leakdown got on #1 got the compression to 400+...would seem to indicate rings.)?