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Mid range stumble


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Those aren’t cub cylinders those are driveline cylinders.
Ad Sleeper06 stated you need to pressure test the motor first thing and find air leaks, if any. Takes almost no time to do.


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Those could very well be athena cyls not driveline. Or could be the old RDZ cyls also. Hard to tell from the outside

Guess I didn’t think about that is Rdz still sleeving the driveline cylinders for his stuff? Perhaps a peek in the bores to see what type of pistons would narrow it down.


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21 minutes ago, christoph.tamz said:

You guys are making me think I have a stock shee with reeds and exhaust

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you dont 

re search how to pressure test the motor and do a proper compression test.  remember these are 2 different things. A compression test is for cylinder compression in each jug. Take the plugs out, screw in the adapter that has the same length thread of your spark plug , you hold the throttle wide open and kick the hell out of it until the needle stops moving.  do each side

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