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CHECK YOUR MAG TIMING DICK NANCY & SOPHIE -------Original Message------- From: Steve Date: 04/30/05 15:04:50 To: [email protected] Subject: [COUPERS-TECH] Engine noise Today after 3 years on the ramp I attempted to get my aircoupe in the air. While taxiing I pulled the throttle back to approximately 550 to 600 rpm where the engine ran rough and I briefly heard a metallic clanging sound. After several attempts to repeat this noise I returned to the hanger to pick up my mechanic and while taxiing was briefly able to repeat this noise. My mechanic was unable to determine the cause of the sound but did agree that it was intermittent. We returned to the hanger and checked the compression it was 74, 72, 74, 76. Does anyone have any idea what could be causing this noise? What does is sound like when the valves are sticking? The noise only occurs at very low idle with the engine running rough and then it is only intermittent. Any help would be greatly appreciated. Thanks Steve T. 5634F ========================================================================== === To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/ ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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