[Blue Moose]

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.

 

[Helmut]

Welcome to the forums. Since the problem occurred after you cleaned the filter and put the chainsaw oil on it, I would take the filter off and see if it runs OK, without the choke. If so, I would clean the filter again and use regular filter oil. I would have thought that chainsaw bar oil would work, too, but maybe it won't.

 

[ostrx250]

you use the gas oil or the blade oil i know silly question but if you used blade oil its way to thick prob a 30w oil and helmut has you covered for the rest

 

[Blue Moose]

Blade oil. Thanks for the input...will try with the filter off.

 

[Helmut]

Blade oil. Thanks for the input...will try with the filter off.

Yeah, I bet it's too thick.

 

[shadetree]

yes..bar oil is way to thick for air fliters..it can't breath hardley at all..40w oil is about right..anything thicker than that.will cause your air problem.

 

[Helmut]

yes..bar oil is way to thick for air fliters..it can't breath hardley at all..40w oil is about right..anything thicker than that.will cause your air problem.

You can use 80W-90W. Look in your 350 Foreman service manual, it calls for 80W-90W on the filter element.

I don't know how thick chainsaw bar oil is, but it's thicker than 80W-90W.

 

[shadetree]

yes..bar oil is way to thick for air fliters..it can't breath hardley at all..40w oil is about right..anything thicker than that.will cause your air problem.

You can use 80W-90W. Look in your 350 Foreman service manual, it calls for 80W-90W on the filter element.

I don't know how thick chainsaw bar oil is, but it's thicker than 80W-90W.

yeah..bar oil for chain saws is way to thick...i just use 40w..because i save my bar oil for my chain saw..that stuff cost alot more than 40w..lol

 

[3gig]

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.

 

[Helmut]

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.

Welcome to the forums. I would try taking the carb off and giving it a good cleaning. Take the top off of the carb, too, and make sure there isn't any water inside the vacuum piston.

 

[ostrx250]

i would get the correct filter oil just to be sure and welcome 3gig