honda ns125rk loseing power when warm

nick10121974 · L Plate Warrior Joined: 09 Dec 2009 Karma :

hi guys well im hopeing some one can help here my bike has been derstricked and has been runnig well up till a few days ago where from cold it is fine then soon as it gets warm it holds back and loses a lot of power to the point it will only do 30 mph. but the odd thing is it comes and goses but its there more than not ive changed all the things i think it could be coil ecu plug recterfire cleaned out the carb at a lose now to what it could be. any one got any idares as i love this bike its so quick

joan_worthy · Two Stroke Sniffer Joined: 14 Apr 2010 Karma :

how was it de-restricted and who by? (i.e. was it a garage that done the work??)

nick10121974 · L Plate Warrior Joined: 09 Dec 2009 Karma :

joan_worthy · Two Stroke Sniffer Joined: 14 Apr 2010 Karma :

have you checked fuel lines?

air filter in good condition?

correct size jets in the carb?

any of the plumb fitting not connected properly any more?

choke?

timing?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Not sure where you would use plumbing fittings on an NS125RK to derestrict it. The restriction is all in the exhaust, plus nothing there to operate the ATAC chamber (power valve).

In addition to the coil / plug, it could be the pickup for the ignition under the flywheel. I would suggest getting the problem to occur and then checking the timing with a strobe light while it is playing up.

All the best

Keith
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