I have put inductive timing light on it and ran it while looking at the timing light, not pointing it at the timing marks and it does not quit flashing

 

Since your resistance readings are off for the capacitor coil, I would take a look at it. It should deliver maybe 1/2 to 1V AC when cranking
the engine. But that is not a Polaris spec, and it is not failing at low RPM.

Your tests to eliminate the possibility of a fuel starvation problem are what I would do as well: spray fuel into intake when the engine
bogs. Exhaust backfire is a strong indication of spark misfire.

 

I have rebuilt carb, replaced fuel pump, bypassed the fuel selector. Third spraying starting fluid when it boys and makes no difference. Beginning to think it's electrical since the oem systems are famous for failing. Only other thing is cam and they seldom fail in 700s

 

hey, did you get any resolution to this?
I have been cursed with 02 700 issues too. not exactly the same but close.
I replaced the ignition and now ive got other? problems.
check out my new thread and see if you have any ideas!
cheers
T

 

Nope. Still chasing the problem. I did discover it is overcharging so I am waiting on voltage regulator now
. Also found lots of corrosion on the wires and terminals on the left handlebar switch that kills motor and reverse over ride. Waiting to run it . Will post as soon as regulator arrives

 

E: I am still trying to figure out very similar problems with my Suzuki LT-A500F Quadmaster. To add to the similarities,
I found that my reg was charging at 16V, so I replaced it. I still get bogging and backfire at mid-throttle. I have an
engine oscilloscope hooked up and it does not seem to loose spark, but I am not sure. My inductive tachometer is
confused. I still suspect misfire, and may try a different coil. I did find out-of-spec cap resistor and replaced the cap.

I have also de-potted the CDI and found no obvious cold joints, etc. I will likely change out the main ignition capacitor
next. This unit has a signal processor IC in it!

Uncanny how I seem to have nearly same symptoms on this machine. I hate to buy a very pricey used CDI, esp if
that is not the cause.

 

I have now discovered that there is gas in the oil. Don t know if it is from a leaking needle and seat or a bad intake valve.