bansheegoon Posted May 5, 2013 Report Posted May 5, 2013 Went to the dunes this weekend i started getting high rpm or wot fluttering in the high rpms so i started heading back to camp. So I'm fly in along in 6th gear. all the sudden I feel one side loose all power like the spark plug fell off. I didn't feel or hear anything weird like broken piston. I pulled in the clutch right away to prevent further damage it wanted to keep running on one cyl so I hit the kill switch. Waited for it to cool and checked out everything on the outside of the motor it looked fine so I tried to kick it over. Feels like I'm getting zero compression on the left side wouldn't even burp out that pipe with the throttle open during kick start. Anybody know this symptoms? I'm thinking blown out rings or crank came apart. Quote
J-Madd Posted May 5, 2013 Report Posted May 5, 2013 Hole in piston or rings seized. Probably due to air leak. Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 Also it would feel like my chain was skipping teeth on hill shots or heave accel but it really shouldn't be its tight and sprockets are good also good chain guides and rollers good Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 My pipes heated up equally and I use 110 octane. As far as air leak wouldn't I get a run away or really hot pipes on one side? Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 Well I pulled the jugs pistons and cylinders looked fine. Im thinking ignition system problem now.Is carbon build up on the top/center on the pistons normal? Quote
J-Madd Posted May 5, 2013 Report Posted May 5, 2013 If it had no compression on one side something is wrong. Or I guess you meant it just wasn't running on that side? Quote
registered user Posted May 5, 2013 Report Posted May 5, 2013 spark plug probly fell off . maybe air filter got unscrewed . Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 It was making compression but it wouldn't burp out the tail pipe with throttle open while kicking over. Maybe a plug wire came loose would that cause high rpm flutter because that was my first problem then this. Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 On a side note I could literally wiggle the positions while in the cyls. That's pretty far gone right? Planning on boring and getting new pistons anyways Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 spark plug probly fell off . maybe air filter got unscrewed . Now that I think about it, the wire might of pulled out of the plug but what about the high rpm flutter. Something is fucky here... Quote
rg97 Posted May 5, 2013 Report Posted May 5, 2013 Is one cylinder set up for low end and one for top end? I'm sure that would cause some problems Quote
bansheegoon Posted May 5, 2013 Author Report Posted May 5, 2013 Right now one cylinder is set up for no power (actually inertial loss of power) and one is set up for mid to high . Just going to bore the cylinders and get new pistons and cut an inch off the plug wires Problem solver! Not going to buy a new crank this time Quote
Jereme6655 Posted May 6, 2013 Report Posted May 6, 2013 and what do the sides of the pistons look like? do you have an aftermarket stator? anything from Ricky Stator or Trinity? Quote
registered user Posted May 7, 2013 Report Posted May 7, 2013 maybe each cylinder has a different kind port job. try a fmf on one side and cpi on the other ? Quote
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