1998 Yamaha Grizzly 600 - Help please!!!

[viperd911]

i have a 1998 grizzly 600 it had no spark and after replacing the pick up coil i got it to run but it is now misfiring and backfiring horribly and won't idle and is extremely hard to get running if done every thing the service manual has told me to do with no difference if any body has any advice it would be greatly appreciated

[viperd911]

it almost seems like the timing is way out and it has a strong consistent spark

[swampcat07]

On the newer quads there are magnets on the flywheel that tells the quad when to fire. I have seen cases where the bonding agent let loose and the magnets fall off. As a last resort maybe pull the cover off and give them a look, but check the repair manual first to see if your bike is set up the same way.

[viperd911]

i have already had it completely disassembled and inspected the parts referring to the service manual and

nothing is out of place or cracked or badly worn

thanks for the reply btw and if you have any other ideas it would be greatly appreciated

[viperd911]

and yes it has magnets

[naveman]

i have a 1998 grizzly 600 it had no spark and after replacing the pick up coil i got it to run but it is now misfiring and backfiring horribly and won't idle and is extremely hard to get running if done every thing the service manual has told me to do with no difference if any body has any advice it would be greatly appreciated

I have the same thing going on and cant figure it out. It seems to be advanced ignition timing. How did you fix your Grizz?

[viperd911]

I have the same thing going on and cant figure it out. It seems to be advanced ignition timing. How did you fix your Grizz?

hey sorry about the long time to reply but what ended up fixing it was as simple as switching the wires on the pickup coil the after market ones seem to be marked improperly after much money was spent it turned out to be the easiest fix nothing else i did fixed it hope this helps

[naveman]

Thanks for reply. On mine it turned out to be a blown capacitor in the CDI. The confusion came because it must have blown right when I started it up after replacing the stator and pulse coil since the problem wasnt there when I disassembled the engine. The reason it took me so long to check the CDI is that Ive never had an engine continue to run (even poorly) when the CDI goes out. Weird.

[naveman]

Which wires did you have to switch?