opinion on a 1976 yamaha dt175 problem...?

Awesome Person

New member
ok so my friend was driving around with me. then he went home and called me about 10 min later because his bike randomly died. so i brought him a new spark plug bc we thought it fouled, it still wouldnt start and only spark about 1/3 of the time, then after so many kicks, it would backfire really loud and not do anything. i traced all the wires, looked at the carb, head bolts, etc and everything seems fine. so we think the ignition coil failed. what do you think? thanks
 
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