Motorcycle Repair: cutting out and missing, triumph tiger, cause havoc


Question
I have a 68 triumph tiger rode it a mile ran great started it back up went to acserate and started missing and cutting out gas is fine spark is fine can you help me

Answer
John,
 Be absoulutly sure fuel delivery is good.  It is very possible you got some tank rust or other debris into the carb. and it is clogging a critical jet.  If you have a strong blue spark and timing is spot on you may be able to rule out an ignition problem.  You probably need to have a look at the carbs.  Here are some basic procedures to follow I've given others on this matter:
Disassemble, clean all jets and orifaces with solvent and COMPRESSED AIR ONLY, use NO wire or picks to clean holes/airways.  This can damage the precise action that takes place to provide the proper fuel delivery. Rebuild carbs with new gaskets and make sure your floats are set correctly. Also be sure your floats don't have a leak that is causing them to sit at the bottom, I've seen this w/ older models that use sottered copper floats. Do not overlook the float level, be very sure you are not starving for fuel. Check that the needle valve is moving smoothly and not worn to the point it is letting fuel by when seated. In relation make sure fuel flow is unobstructed and use a good in-line fuel filter from the tank to the carb. Even tiny particles in the fuel can get logged in critical areas and cause havoc.

Hope this helps,
Mike