I have a McCulloch Mac140 that is leaking pressure from the oil pump while performing a pressure/vac test, I know this is a plunger style pump operated by a crankcase pulse like the fuel pump but am unsure if there should be a pressure leak from the pump.
I would think this would...
Worked great until something broke. Not sure. Was running mix. But seems to have no compression now. Keeping bar. Oiler works good. Needs a rebuild most likely. 75 plus shipping. Clean up and put in mantle or fix and use.