Yamaha Discussions about Yamaha ATVs.

Starts and idles fine, but bogs with any throttle, 03 Kodiak 400 Ultramatic

Thread Tools
 
Search this Thread
 
Old Yesterday | 05:33 PM
  #1  
NGA's Avatar
NGA
Thread Starter
|
Weekend Warrior
Joined: Jun 2026
Posts: 1
Likes: 0
Default Starts and idles fine, but bogs with any throttle, 03 Kodiak 400 Ultramatic

Starts right up and idles great, but as soon as I touch the throttle, in neutral or in gear, the engine bogs, spits, sputters, and sometimes backfires.
What I've done so far:
Gone through carb
Replaced carb
Replaced CDI
Checked ignition coil spark - very strong
Checked compression - 190 psi (WOT)
I'm at my wits end with this thing. I bought it brand new in 2003, never abused it, regular maintenance, and only problems I've ever had is bad needle valve in carb a few times and bad CDI about 8 years ago. Any ideas what could be causing this? Thanks in advance for any feedback.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JustRangerThings
Yamaha
4
Sep 3, 2021 06:29 AM
elishaman79
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
36
Dec 13, 2018 06:52 AM
lonerider856
Suzuki
1
Oct 29, 2015 08:17 PM
Holiday1979
Yamaha
1
Jul 18, 2011 08:39 AM
Polarisracr2010
Polaris
7
Mar 22, 2008 08:13 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 12:12 PM.