There are lots of bright folks here on this site and hope you can explain
why compression on small 2 cycle engines with the Walbro type carbs seems
to drop off. I have several items like line trimmers, blowers, tillers,
hedge trimmers, etc that have failed due to low compression (below 90
psi) that happened rather suddenly it seems.
I checked spark plug firing, squirted gas in carb, muffler, and the
compression comes up below 90 psi that appears the likely cause.
Could it be the area below the piston is at fault due to leakage or
something. It just seems odd that a good running engine would drop off
compression so suddenly. Any thoughts?
why compression on small 2 cycle engines with the Walbro type carbs seems
to drop off. I have several items like line trimmers, blowers, tillers,
hedge trimmers, etc that have failed due to low compression (below 90
psi) that happened rather suddenly it seems.
I checked spark plug firing, squirted gas in carb, muffler, and the
compression comes up below 90 psi that appears the likely cause.
Could it be the area below the piston is at fault due to leakage or
something. It just seems odd that a good running engine would drop off
compression so suddenly. Any thoughts?