04 Triumph America Running problem

04 Triumph America Running problem

Posted in the Triumph America Forum


Auburndale, FL

#1 Dec 2, 2011
Severe backfiring on right cylinder, through the carb(RS) at or just above idle. Coils changed(secondary resistance open circuit) plug caps changed(also open circuit). Wires good. Pick up coil checks out. Carbs and fuel system clean and good. Runs better when engine is cold but deteriorates rapidly after about two miles. Has anyone any experience with this type of problem?

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