Motorcycle Repair: yamaha xt600 1984, yamaha xt600, air fuel mixture

Question
will not start somtimes no spark kick over 3-5 times starts runs fine .stop kick over no start or spark changed plug coil checked all wiring etc .bike starts idles then stops no spark kick over 4-5 times starts  thanks

Answer
Hi Rob,

Q:  "...will not start somtimes no spark kick over 3-5 times starts runs fine .stop kick over no start or spark changed plug coil checked all wiring etc .bike starts idles then stops no spark kick over 4-5 times starts thanks..."

A:  I suspect a loose electrical connection or defective conductor.

Otherwise, check cylinder compression & valve clearance, adjust or repair accordingly.

Read the spark plug to know if the carburetor air-fuel mixture is correct or needs tuning.

Check the ignition system.

Respectfully,
Mark Shively