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Seamus_Kinane Started a new thread 1986 kx125 project, won't rev out
2/12/2018 2:44pm Hey Guys im Sham from Ireland, bought this kx125 e1 from a friend last week as an old school project for handy money, but cannot get her to rev out fully, thought it was carb needing tuning but there's no airscrew on the mikuni vm35ss, any ideas why it won't rev out? Cleaned carb and jets, too btw. 
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Seamus_Kinane Added a reply to 1986 kx125 project, won't rev out
2/12/2018 2:04pm Ya man pretty familiar to that, gonna change seals and piston and see what happens?
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Seamus_Kinane Added a reply to 1986 kx125 project, won't rev out
2/11/2018 2:37pm Pretty bad alright, but would it still have such an effect on performance because it's all below the ring?
Seamus_Kinane Added a reply to 1986 kx125 project, won't rev out
2/11/2018 11:31am Okay took off the cylinder and power valve assy this evening, cylinder looks fine but piston has some damage below the ring gap, power valve assy wasn't to dirty. Still don't know why shes bogging down on me.. still convinced it's a carb issue but can't see anything wrong with it.
Seamus_Kinane Added a reply to 1986 kx125 project, won't rev out
2/9/2018 2:24am Okay I've gotten to do some bits during the week, checked main jet in carb and it's a 330.., I think it should have a 340, would this cause such a problem, needle clip position was okay, plugs and fuel are new, along with air filter, getting a really oily residue out of the exhaust and cylinder head, would this...