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Old 19-09-2013, 12:51 AM   #10
bradder's
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Join Date: Mar 2013
Location: Ireland
Age: 34
Posts: 109
Bike: yamaha tzr 125R
Re: bike backfiring and running like sh*t

Quote:
Originally Posted by Jeggz View Post
Doesnt matter too much anyway. If its sparking fine then your gonna want to check your air filter, if its proper dirty and dusty, give it a clean. And temporarily run the bike with it off. However i seriously warn you DO NOT RIDE IT LIKE IT and make sure your environment isnt really dusty. With the bike standing, rev it and see if it bogs down; if it does, the air filter is not the issue. If it runs fine then your air filter is the issue.

Following the path of air flow, if the air filter isnt the problem and you still have no remedy then check the exhaust. It might be coated with soot considering its a two stroke, which would block air flow and bog you down. The same with a blockage in the head where the exhaust goes in.

If you still have no luck then i dont really know. Maybe the jet in the carb is too big? Or your chokes on? or stuck in position? Be funny if it was!!!!
ha well i know my choke's working cuz its hard to start without it. and i think its a electric issue the spark is yellow the odd blue flash (it should be good strong blue right?) and the bike shorted out on me 1 of the nights b4 it ran like it is lost all lights and elect (it was dark) it was dodgy wire earthing off the frame..could of fryed sumting else :/
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