C ICEY Posted August 8, 2013 Report Share Posted August 8, 2013 Hi Guys I just returned from getting the sprag clutch replaced, (trailered the fuselage to the shop) also changed the flywheel to a 'softer' timing start model. I have the soft start CDI, but not sure if they are bullyhawk or Rotax. Anyways.... got the wings back on and started things up, easy start again, everything seems fine, but now there is a 600rpm drop on the right switch, accompanied by very rough running. EGT on #2 cylinder drops when running on the rough mag. Checked spark plug connectors, and indeed, one connector was very loose, so I replaced that, but the problem persisted. Very rough running on right mag, smooth running on left, and smooth running on both mags, with even EGTs. I reversed the connectors from the CDIs (red/blue, and green/none) and experienced the same roughness, but on the Left switch position, with the same # 2 cylinder experiencing EGT drop on rough running. That was as brave as I got. any suggestions for the next step of trouble shooting? It appears to be a bit of a bear to get to the trigger coils, does the engine have to be pulled forward to access these? or is there another way to test them? Mike Link to comment Share on other sites More sharing options...
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