My Briggs and Stratton 475 pushmower engine starts up when primed, but then immediately quits, like it isn't getting gas. You can prime it again and it will start back up and then immediately quit again. I just replaced the intake manifold plastic tube, which was cracked. There is oil in the exhaust and carburetor, like the motor was turned upside down. Can you help?

Harold Brewer, July 2010

take the exhaust of and drain the oil out then the carb sounds like its blocked so take the bowl of the carb but clamp the line with a vice grip or a adjustible spanner check for dirt then open the line and see if fuel runs out

david, July 2010