Honda fourtrax 300 carb - Honda ATV Forum
Repair & Maintenance Having problems? Doing a rebuild? All Repair/Maintenance Discussions here.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 07-23-2011, 03:18 PM Thread Starter
Bluestar's Avatar
Join Date: Jul 2011
Posts: 60
Liked: 1 times
Honda fourtrax 300 carb

Hey I just bought a 94 honda fourtrax 300 2x4 and when I bought it I needed to rebuild the carb. It hardly ran at all when I bought it and the idle jumped from high to low and backfired and was just a mess. I took the carb apart and put a rebuild kit in it and replaced all the gaskets o rings jets etc and got it to idle nicely. It runs but when I punch the throttle it backfires untill I shift up into a higher gear. I tried tuning the carb but the only setting it will run on is with the pilot screw all the way in and the throttle adjuster loose. Any other settings it idles really high. I changed the fuel,spark plug, tryed running high octane and than ran a take or reg fuel in ti it all did the same thing. I checked the intake boot to see if it was sucking air but it isnt. It runs like this I can take it out ane everything but Ide just rather have it running correctly. Anyone know what the problem could be? Do you think its worth my while to just buy a new carb? Thank for the help.
Bluestar is offline  
Sponsored Links
post #2 of 3 (permalink) Old 07-23-2011, 03:39 PM
Super Moderator
Supporting Member
Deeperinthabush's Avatar
Join Date: Feb 2011
Location: No longer in Pensacola Fl.
Posts: 11,311
Liked: 54 times
Welcome to the forums...Free downloadable manuals in the Schematics/Manual help section in the Technical discussions ...When you replaced the jets in the carb, did you put the exact same size,and brand back in ??? I think you may have a too small main jet problem if it only happens when you go to wide open throttle...

FREE REPAIR MANUALS >> 1986-1992 trx350 parts for sale>>
Deeperinthabush is offline  
post #3 of 3 (permalink) Old 07-23-2011, 04:19 PM
Super Moderator
Supporting Member
shadetree's Avatar
Join Date: Feb 2010
Location: north little rock, ar.
Posts: 30,118
Liked: 1945 times
carb's need to blow your carb out with air...every little hole..orface...if yer jets are all new..then it's your carb..make sure you read the sticky from me on how to clean and rebuild a explains everything you need to know on how to clean a carb..spec for a trx300.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '05 trx500fm
shadetree is offline  

  Lower Navigation
Go Back   Honda ATV Forum > Honda ATV Technical Discussions > Repair & Maintenance

Quick Reply

Register Now

In order to be able to post messages on the Honda ATV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome