beez33 Posted July 24, 2011 Report Posted July 24, 2011 (edited) I have a banshee that was just rebuilt last october and only has about 20 hrs on it. It is ported, decked head, v force 3 reeds, cpi pipes and silencers, 320 main. I did a compression test and the left side only has 110 pounds and the right side has 150. the left side doesn't seem to be firing with minimal exhaust coming out the left side exhaust and its cold. Went through and cleaned the carbs and still no luck. Has good spark. put new plugs in, swapped spark plug boots and the problem stays on the left side. looking for ideas before I tear into the motor. Thanks Edited July 24, 2011 by beez33 Quote
knightboy Posted July 25, 2011 Report Posted July 25, 2011 (edited) I have a banshee that was just rebuilt last october and only has about 20 hrs on it. It is ported, decked head, v force 3 reeds, cpi pipes and silencers, 320 main. I did a compression test and the left side only has 110 pounds and the right side has 150. the left side doesn't seem to be firing with minimal exhaust coming out the left side exhaust and its cold. Went through and cleaned the carbs and still no luck. Has good spark. put new plugs in, swapped spark plug boots and the problem stays on the left side. looking for ideas before I tear into the motor. Thanks im havin the same problem with mines it get a lil comp. out pipe when i revs on it but at idle it as nothing but air come out pipe someone help us with this Edited July 25, 2011 by knightboy Quote
Trueblown Posted July 25, 2011 Report Posted July 25, 2011 Mine was a broke piston at the rings but I had a total loss of power too Quote
beez33 Posted July 25, 2011 Author Report Posted July 25, 2011 I tore mine down today. The piston was all scored up and the skirt of the pistion broke off. Cylinder doesn't look to good either. Since the skirt broke off, do you guys think I need to split the case and check for pieces of the piston? Might need new cylinders. Could be pricey. Quote
Jereme6655 Posted July 25, 2011 Report Posted July 25, 2011 you DEFINATELY need to find all the piston. you can check by trying to put the piston back together like a puzzle......dont forget to get the pieces out of the exhaust. My advice would be to take the bottom end apart just to be sure. Im a little bit of a paranoid freak though haha Quote
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