Cylinder leak test Original Message Feb 20, 2005 12:26 pm
Need to run a leak test on a briggs 15.5 on a craftsman tractor for a friend. Briggs says to hold the piston at tdc with the crank holder and a 1/2" breaker bar. In this case the engine is still on the tractor. Would engaging the pto hold the piston? If not, would the proper socket and breaker on the flywheel nut be enough to hold it? Can't see taking the engine off the tractor until I know for sure if the problem is rings, valves or just a head gasket. Thanks
