jaybanshee Posted August 6, 2010 Report Share Posted August 6, 2010 (edited) Help No fire on left cylinder?!? At idle the left cylinder is not firing and the exhaust is cold but I’m getting spark to the plug… fuel is going in and everything, carbs are sync'd. It starts to fire about 3/4 of the throttle. I don’t know what it could be. I took the bike into the shop for a rebuild and this is the way he gave it back to me and he can’t fix it. He keeps blaming it on the TORS and I never had them hooked up before I gave it to him and it ran tits before. I had originally just taken it in for tranny work but told him to do the top end being that he was already splitting the case. Has anyone ever had this problem? Edited August 6, 2010 by jaybanshee Quote Link to comment Share on other sites More sharing options...
jaybanshee Posted August 6, 2010 Author Report Share Posted August 6, 2010 maybe a bad plug? check compression check reeds clean carb All good... compression like new, plug fires out plus I replaced it twice... carbs were just jetted and gone through by the same shop Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted August 6, 2010 Report Share Posted August 6, 2010 is the choke tube in place? what mods does your bike have? what jets are in the bike now and what elevation are you running at? Quote Link to comment Share on other sites More sharing options...
jaybanshee Posted August 6, 2010 Author Report Share Posted August 6, 2010 is the choke tube in place? what mods does your bike have? what jets are in the bike now and what elevation are you running at? Not sure on the Choke tube... will check but they are not stock carbs I think there 35 PwK. Sea level max ever a few hunder feet… never over a 1000. I have to check the jets Mods; 5 mill stroker After market reeds pistons .5 over Stock milled head ported polished CR carbs twist throttle pipes Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted August 6, 2010 Report Share Posted August 6, 2010 Not sure on the Choke tube... will check but they are not stock carbs I think there 35 PwK. Sea level max ever a few hunder feet… never over a 1000. I have to check the jets Mods; 5 mill stroker After market reeds pistons .5 over Stock milled head ported polished CR carbs twist throttle pipes nevermind about the choke tube then....i don't think the pwks have it... Quote Link to comment Share on other sites More sharing options...
edcadfab Posted August 7, 2010 Report Share Posted August 7, 2010 I had a simmilar problem and it turned out to be water in the gas. I drained the tank and carbs, changed spark plugs and all was beter Quote Link to comment Share on other sites More sharing options...
makemefaster Posted August 7, 2010 Report Share Posted August 7, 2010 i had the same thing but mine was on the right side and i have talked to several people with the same issue if you take it out and run the hell out of it for a minute it will normally go away funny thing is no one noes what causes it Quote Link to comment Share on other sites More sharing options...
jaybanshee Posted August 9, 2010 Author Report Share Posted August 9, 2010 i had the same thing but mine was on the right side and i have talked to several people with the same issue if you take it out and run the hell out of it for a minute it will normally go away funny thing is no one noes what causes it What about my top end... will this ruin it as I haven't even broke it in yet? Everything else above check in good over the weekend... I did notice I have another problem now. It has problems downshifting... plus it doesn't catch neutral for nothing after a little warmed up... new clutch was just installed and the guy said he fixed that problem as well. Quote Link to comment Share on other sites More sharing options...
J-Madd Posted August 9, 2010 Report Share Posted August 9, 2010 [ Swap carbs left to right and see if the problem follows the carb. Quote Link to comment Share on other sites More sharing options...
MatHolland Posted August 9, 2010 Report Share Posted August 9, 2010 how do you know that your not getting spark at 3/4 throttle? if you take your plug out, put the cap back on, put it against your cylinder and push the kick start does the plug spark? Have you done a leak down test? Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted August 9, 2010 Report Share Posted August 9, 2010 try swapping the plug wires first to see if it kills the right cylinder..... Quote Link to comment Share on other sites More sharing options...
vizio Posted April 9, 2011 Report Share Posted April 9, 2011 i have seen that happend and was the reeds Quote Link to comment Share on other sites More sharing options...
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