93' polaris trailblazer- was running great but now it backfires LOUD, especially backing off the throttle. Will alaways start on the first pull but when I give it the gas it dies outthen tends to clear up for a while. The tank is venting properly. Any ideas? Thanks Tim

 

I would clean the carb first off.

 

Any cracks in the carb boot? Exhaust leak maybe?

 

my 600 did the same thing had water in gas put additive in it cleared up

 

sounds like a lean condtion. check the spark plug to see if it's white. also might be water, but most likely wouldn't run good at all. does it idle high? wondering if maybe it has an air leak? a couple of things to check out and it wouldn't hurt to clean carb if you think it's dirty or replace gas if bad. imo

 

I cleaned the carb,still back fires, will change the gasoline next thanks

 

If thats the case try the stuff called "Seafoam" it can do wounders.

 

I have trailblazer 97 and it backfires through the air box starts idles fine but when warms up after riding backfires through air box I can figure it out..sometimes won't start back up after it starts doing this..

 

Not necessary to post twice in the regular section and expert section. Someone will find you.https://atvconnection.com/forums/pol...cate-post.html