Tweet
What is the best method to test engine compression? Do you test when the engine is warm or cold? I have a 1998 225 2 stroke yamaha.
-
-
the best is both
cold and warm
this way u can see your difference
best way
remove the spark plug on which cylinder y want to test
i throw the KILL switch so no spark occurs
hold throttle to WOT and crank for around 5-10 seconds
record ur readings, and move to next and replace the spark plug
report to all others
u want to between 10% mas
let us know
Comment