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Discussion Starter · #1 ·
got an 03 z400 that wont start i think that timing is off can anyone help and let me know what the correct timing is that would be great thanks.
 

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we need a bit more info then that, do you have stock valves? did you check valve lash? did you recently change any parts? add any power adders? stock timing chain? see we need more info
 

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Discussion Starter · #3 ·
i just changed the rings. i marked the cams n put them back the where the markings were and nothing. the timing chain is stock, i believe the valves are stock i could b wrong the kid i bought it from said that it had a 440 big bore but when i took the cylinder outto get measured it was bored out to a 450 so i dont know what else could be done to it . the z400 has a t-4 slip on, cdi rev box, jet kit and it has the 450 big bore
 

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Did you check your valve lash? Will it start by pull starting it? What is your jetting at?
 

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Well my petcock is bad, you might wanna check that. Mine is also an 03.
 
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