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FourTrax 300: Running rough after filter change

6049 Views 10 Replies 5 Participants Last post by  ostrx250
I recently changed the air filter on my '90 300. Since the change, the motor is running very rough, I have to choke it almost all the way. It won't run with the choke off.

Seems like an obvious fuel / air mixture problem. Advice? I saturated the filter in oil, although I used chainsaw oil, not air filter oil (couldn't find any and this was recommended as a substitute).

Any input greatly appreciated.
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Any updates on this issue?

I recently changed the air filter on my '90 300. Since the change, the motor is running very rough, I have to choke it almost all the way. It won't run with the choke off.

Seems like an obvious fuel / air mixture problem. Advice? I saturated the filter in oil, although I used chainsaw oil, not air filter oil (couldn't find any and this was recommended as a substitute).

Any input greatly appreciated.
I'm having the same issue with a 93 300 4trax 4x4.

Now, clearly I need to explain a little history about mine.

1- I had a blast of a ride out in the country on some trails and feilds, to my surprise some of the mud quickly turned into a pond. So I was 2-3' deep in h2o. My natural 4x4 instinct kicked in and said DON'T KILL THE GAS! h2o filled up to this level isn't good.

2- I've replaced the air filter, oil filter and oil. All using genuine honda parts from my local dealer.

3- Still having to choke it all the way for it to run. I can't let the choke off or sit idling at all or it'll die for sure. This maybe where I need a :r_c: and let the pro's take care of it, unless someone can point me in the right direction for treatment.

Thanks to the 4x4 god's for allowing us to have a forum like this one!

3gig.
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