----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- It's very easy to verify if you have a stuck valve. Make sure the magnetos are grounded and pull the prop through by hand at least 4 times. If a valve is stuck the prop will pull very easily one of the times. Listen to the exhaust pipe to see if it is an exhaust valve, and listen to the carburetor air inlet to determine if it is an intake valve.
Syd Cohen [EMAIL PROTECTED] wrote: ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- I flew the Coupe yesterday to the hangar, with an instructor onboard, to the hangar about 20 minutes away. The spinner bulkhead had been discovered cracked in the annual so I had it as well as the spinner bulkhead removed. About 10 minutes into the flight RPM went to 1900 with the engine running very rough. We powered back as we approached a local airport and the engine smoothed out. We landed and inspected with no visible problem. We took off, climbed to 3000AGL over the airport and finished the hop. The onboard instructor was also an A&P and said we might have stuck a valve on a hot cylinder due to the missing spinner not directing air properly into the cowl. Anyone else had this experience with a spinner off? Thanks ED ==^================================================================ EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email To: [EMAIL PROTECTED] This email was sent to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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