Is a compression tester really neccessary? Ifso what mm threads for most small engine needs?
#2
WISCOPROUD
its a good diagnostic tool for pointing u in a direction
#3
ILENGINE
It is a good diagnostic tester in some cases. 98% of spark plug threads are 14 mm by 1.25 same as your vehicle. Some of the newer chainsaw and trimmers use a 10 mm. ATV's can be 10, 12, 14 mm. Some of the real old equipment engines were 18 mm.
