I have a 04 DVX 400 ATV and put a new SRP CDI Hi Rev Unit on it and now it will not fire.?

Question

Do I need to re-time the ATV with the new CDI or possibly new jets. The stock CDI unit was bad a would allow spark with this new unit I have plenty of spark but still will not fire. What do you think??

Answer 1

you need to know if the program in the unit is setup right for your atv, what i would do is verify the basics, 1) am i getting gas 2) is spark there (You said yes), is it there at right time (most probably not) you can check that through timming or pull plug and look for compression stroke, should spark around pistons top travel.