bansheeonly Posted May 11, 2008 Report Share Posted May 11, 2008 I just did a top end rebuild and on the first warm up cycle the left cylinder will not do nothing but puff out a little white smoke the right side runs perfect. So i did a leakdown test held 7psi for 30min. Did a coolant pressure test held perfect. Compression was at 160 with 21cc domes. Everthing checked out fine so i switched the reeds, spark plug wires, and carbs from the left to the right and tried again. Still i have the same result the right side perfect, the left side just a little white smoke. I dont know what else to do or try any help would be appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 11, 2008 Report Share Posted May 11, 2008 did u put the piston in the right way.....with the 2 intake holes on piston skirt, facing the intake ports on the cylinder? i'm trying 2 think right now of other possible things Quote Link to comment Share on other sites More sharing options...
bansheeonly Posted May 11, 2008 Author Report Share Posted May 11, 2008 did u put the piston in the right way.....with the 2 intake holes on piston skirt, facing the intake ports on the cylinder? i'm trying 2 think right now of other possible things Yes i put the ports on the piston facing the ports on the cylinders. The side that is not working also appears to be getting alot hotter and a little gas/oil is coming out were the pipe connects to the silencer. I removed the airbox and sync the carbs again to make sure they were right and they were but if you put your hand up to the boot on the back of the carb it does not appear to be sucking as much air as the side that is working properly. Thanks for the reply. Quote Link to comment Share on other sites More sharing options...
bansheeonly Posted May 11, 2008 Author Report Share Posted May 11, 2008 I have read ever forum on this website pertaining to a motor only running on one cylinder. I have tried to solve the problem with ever possible thing i know and read. The only thing i dont understand is on one forum the guy said he had a bad BE bearing that caused his motor to do this. Can someone please explain to me how a bad BE bearing will cause a motor to run only on one cylinder? Thanks Quote Link to comment Share on other sites More sharing options...
bansheeonly Posted May 12, 2008 Author Report Share Posted May 12, 2008 Anybody know? Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted May 12, 2008 Report Share Posted May 12, 2008 open the drain valve on the carb on the bad side and see if the float bowl is getting fuel, how is your carb sync? Just a couple of things to look at. Quote Link to comment Share on other sites More sharing options...
LeadBoots Posted May 12, 2008 Report Share Posted May 12, 2008 (edited) did u line up the rings right on the piston? did it run good before you did the top end. so there was 160 psi on both sides. did you take the case apart at all or just the top end. are you 100% sure you put the piston in the right way? Im not sayin you dont know wat your doing or anything but you should make sure. Edited May 12, 2008 by LeadBoots Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted May 12, 2008 Report Share Posted May 12, 2008 check to see if there is spark on that cylinder. plug cap ohms should be 5000 or 5k ohms. Quote Link to comment Share on other sites More sharing options...
polkaudio Posted May 12, 2008 Report Share Posted May 12, 2008 Have you taken the carbs apart during the rebuild to clean them? If not, try that. I had an issue with my shee running on one side. I spent too much money on stuff I didn't need. It ended up being a plugged pilot jet. Check your jets. Quote Link to comment Share on other sites More sharing options...
bansheeonly Posted May 13, 2008 Author Report Share Posted May 13, 2008 I wanted to let you guys know will a little help from jeff at fast racing i figured out the problem and all it was was a plugged silencer. I pulled the silencer off and the shee ran perfect. I know i should of thought of it but it just didnt cross my mind. Thanks for all of the replies you guys are great. And a big thanks to jeff your the man. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.