yes i have cleaned carb,replaced filter, adjusted valves,relpaced spark plug,cleaned tank,cleaned out exhaust and cleaned petcock. im lost.im thinking its electrical but im not sure what to check.

 

Its most likely jetting, and it sounds like its too lean. Look for huge air leaks, or reasons why gas isnt getting to the motor. If you open the drain on the bottom of the float bowl, does gas pore out?
How did this all start? Just out of the blue, doesnt run good? Did you do anything....remove air box lid, change oil, clean the clutches...? Did it have the issues before cleaning the carb, or after?
You might have better luck, getting more responses, if you start a new thread, and decribe whats been done, and what its doing.

 

i opened the float bowl and it seems to have alot of gas pouring out.it just started all at once. i went riding and rode mabe 15 minutes and then it started acting up.i thought it was the carb so i cleaned it. i put it back together and it did the same thing so i tore it apart and cleaned everything including the carb for the second time.when you give it gas it also blows out black smoke as it backfires.do you think it could be the coil or cdi?

 

CDI can often be the ghost in the machine, but it will not cause billowing black smoke. Float and needle put back to spec?

Good luck

 

i didnt check the float setting.do you know the correct spec for it?

 

How does the air filter look? Has it been cleaned and reoiled lately?
I would suspect a faulty switch before id suspect a cdi. The reverse switch, diff lock switch, but those are long shots too.
How were the vent tubes on the carb. clear? Gas tank vent clear too?
How was the spark plug cap? loose or sloppy?

 

the air filter is new, i checked the vent tubes and gas tank vent and they are all clear.i bought a reverse override bypass from ebay and it should be here by monday. do you think this might fix it?the spark plug cap feels tight but im not sure how to check it to make sure its getting the right amount of spark.

 

that reverse switch can be the problem check the wiring

 

Did this Grizzly ever get fixed?? what was the resolution?

I was going to suggest replacing the sparkplug wire

 

I also have a 2004 grizzly that will only idle.When hit gas it backfires thru the carb.
have checked carb several times,all grounds and connections.Already has reverse override
which i disconnected to see if it made a difference which it didn't.compression and leak down are exc.If you figure it out let me know and I'll do the same.