I have an Honda HRX 217 that had a bent shaft. Replaced the crank shaft and put it back together and when you pull the cord without the sparkplug in it sounds good, but with the sparkplug in, it makes a metal tapping sound on the compression stroke. Can't quite locate the sound location. Any ideas. I really don't want to reopen the engine again. But I will if needed.
#2
sgkent
A really long screwdriver or rod can help you locate where the noise is loudest. A hose the size of a fuel line can help find issues with tin or exhaust leaks etc. A loose blade might only make noise at RPM and be as quiet as a mouse at low speed. Same for a flywheel.
