RACxEMxWILLIE Posted July 17, 2012 Report Share Posted July 17, 2012 Ok setup is as follows: Keihin 34mm single carb 42 pilot Needle clip is 2nd from the top A/S is 1 3/4 turns out. 175 main My question is, when the clip is in the middle and it runs like shit. I moved it up a notch and it runs perfect. However, when I rode it the other day, mainly half throttle, i checked the plugs and the right plug was whitish gray and the left plug was dark brown. Should i richen up the pilot jet. If not, what should i do about the needle? Also, why is one plug a different color than the other? Quote Link to comment Share on other sites More sharing options...
mike0chek Posted July 17, 2012 Report Share Posted July 17, 2012 possible air leak on the grey side? Quote Link to comment Share on other sites More sharing options...
350skabarat Posted July 17, 2012 Report Share Posted July 17, 2012 possible air leak on the grey side? His running a single carb so can't be an air leak else it will effect both cylinders, check your coil plug wires? That could be the problem, maybe the one side is not firing properly all the time, could be reedvalves? Maybe the one cylinder got damages somehow and has a different psi pressure to the other one. Strange problem actually Quote Link to comment Share on other sites More sharing options...
T_Shee Posted July 17, 2012 Report Share Posted July 17, 2012 His running a single carb so can't be an air leak else it will effect both cylinders, check your coil plug wires? That could be the problem, maybe the one side is not firing properly all the time, could be reedvalves? Maybe the one cylinder got damages somehow and has a different psi pressure to the other one. Strange problem actually your first statement makes no since. if it is an air leak such as a crank seal, base gasket, intake gasket, etc it will affect the side that has the leak much worse than the other Quote Link to comment Share on other sites More sharing options...
BrockMoto Posted July 17, 2012 Report Share Posted July 17, 2012 Sounds like an air leak on the right side, I'd bet intake Quote Link to comment Share on other sites More sharing options...
RACxEMxWILLIE Posted July 17, 2012 Author Report Share Posted July 17, 2012 Sounds like an air leak on the right side, I'd bet intake Yeah im gonna check the reeds this weekend and that nightmare trinity intake. Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted July 17, 2012 Report Share Posted July 17, 2012 Do a leakdown test first.....before you go chasing things that can dont need to be chased. Quote Link to comment Share on other sites More sharing options...
RACxEMxWILLIE Posted July 18, 2012 Author Report Share Posted July 18, 2012 Do a leakdown test first.....before you go chasing things that can dont need to be chased. Well i don't have the means to do a leak down test yet. Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted July 18, 2012 Report Share Posted July 18, 2012 Super SUPER simple to build.....I believe it winds up being roughly $10 to build and it is a phenomenal tool to help diagnose and to test with after builds. Quote Link to comment Share on other sites More sharing options...
bmfx1 Posted July 18, 2012 Report Share Posted July 18, 2012 Yeah im gonna check the reeds this weekend and that nightmare trinity intake. I'd bet on that Trinity intake too. I just assembled my engine and when I did the pressure test every gasket on my intake system was leaking. Had to use sealer on the gaskets. Quote Link to comment Share on other sites More sharing options...
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