Hey guys this is the ? i asked there and noone is answering so i figured that when i ask a ? here they answer it right away so here it is...

We had this atv since 1998 and the last time we had it serviced was in about 2001 so we've been running it about 150 hours without oil change..etc... so i started it up to ride it in the snow about a month ago and it was backfiring when i pressed on the throttle a little bit. I dont know what causes this problem. I thought that it might be cold and the jetting or w/e is off. But i started it up today and it still is backfiring when i revv it up above idle. The pipe and everything is all kinda rusty and dirty but i dont think that should be a problem should it? if somone is famillair with this atv can u help me please.. thanks in advance -Cruz-

 

You might try draining the carbs float bowl. If it has set alot it might have water in the gas. Let it runwhile the fuel petcock is on to flush it out then give it a try. By the way, you better change the oil in that thing. Setting is almost as hard on it as runing it. You also might check the air filte. You might find a critter in there.

 

I agree with asfasasu3, you need to do some hardcore maintenance. I would hate to see what your car engin looks like!

 

You probably need to clean the carb.

 

No im good with air boxes n stuff..there all clean.. would the oil not being changed cause the backfiring? also what do you mean by carbourator float? can you explain more ..

 

The carburetor float bowl is the bottom part of the carb that you can take off. There should be a screw on the bottom of the bowl that you can take out so the gas will drain. Also if the gas has been in the quad for a while you should definitely drain that. Just disconnect the gas line that leads from the tank to the carb and then turn you gas on so it will all drain out. There is probably water in your gas.

 

prolly just jetting because when its colder it makes your engine run leaner.

 

But when it becomes warmer will the jetting specs even out?.. Okay so im going to check out the carb tomorrow n proly drain out the gas n put new gas in. Should i take that carb drain bolt out and let the whole thing drain out then put new gas in?

 

cruz wut quad? ill help ya fix it

 

150 hrs with no oil change WOW!!! Pull the carbs off and clean them, then change the oil and filter.