"nauga" wrote in message
ink.net...
Has anyone got any suggestions on how to
find an intake leak that don't involve standing close to a
turning propellor? Any other troubleshooting advice?
Timing checks good for both mags, BTW. Chrome cylinders,
bayonet CHT probes.

Dave 'testy' Hyde



I use the blow side of a VERY CLEAN shop vac to pressurize the intake. Use
cardboard and a lot of duct tape to seal off the air box and fit the vacuum
hose. You have to plug the exhaust too since a cylinder may have both intake
and exhaust valves open. Then spray soap solution on the intake pipes and
watch for bubbles. Same trick works for finding exhaust leaks.

Works on cars too. I pressurized the intake of a Jeep V8 and found a couple
of pretty good vacuum leaks.

Bill Daniels