[align=left]ok my friends Dohc ZC dosnt turn on it just back fires alot and now that i remember i think they forgot to ground the motor and transmition can it be that???

or is it that the wiring was done worng?
[/align][align=right] [/align]

 

well if it dosent turn on then it cant back fire, do you mean when you crank it it makes that sound? your wiring could be part of the problem, but it sounds like your timing is WAY off, or your plug wires are wrong.. maybe both.

good luck