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  1. Kawasaki KFX 400 Idles fine Backfires when you try to give it gas.

    Kawasaki KFX450/KFX400
    I have a KFX 400 that will start and idle, but when you give it gas it starts back firing badly. I have put a big bore kit in. Put new valves and shims in the head. Replaced the carburetor. Triple checked the timing. I replaced the generator, voltage regulator, and a new AGM battery. I am unsure...
  2. Carb backfiring

    Kawasaki Brute Force/Prairie/Bayou
    took the airfilter off, and see the two slides (can't remember the name for them) that let air into the carburetor. When I hit the throttle, (while sitting still in neutral) only one slides open (the one closest to the battery), and it barley opens, and the carb backfires through it. The other...
  3. still chasing the problem - 07 BF 750i

    Kawasaki Brute Force/Prairie/Bayou
    I wanted to post a bit of the history as to what has been going on, and what I have done to try to solve the issue. BIKE SETUP since day-1: HMF slip-on exhaust, main jets changed as per HMF's recommendations Dynatek CDI So last year (after the bike had sat for longer than Id like to admit) I...
  4. My Bayou 250 and its Problems

    Kawasaki Brute Force/Prairie/Bayou
    Hello, I have a 2006 Bayou 250. I bought it off of my cousin as he wasn't using it much anymore and it was just sitting. He barley used it on the farm and he was the one who bought it brand new. When i first took it home it was running rough, it wouldn't run unless the choke was on. So i went...
  5. 2011 Prairie Backfiring

    Kawasaki Brute Force/Prairie/Bayou
    Hi all, Went to my sisters today to change the oil in our 2011 Prairie. After getting it changed took it for a spin and it was backfiring in reverse and in drive. I took for a short spill around her field and everytime I left off the throttle a bit it would make a backfire sound and acted like...
  6. Brute force 750 missing/skipping

    Kawasaki Brute Force/Prairie/Bayou
    I have a 2007 brute force 750 with a hmf pipe, k&n air filter, and moose racing digital ignition. It skips all throughout the mid range and high.. It is jetted for the pipe only so I tried a stock air filter on it and it made it worse.. Then i put the k&n back on and it stayed bad.. Its almost...
  7. Brute force skipping

    Kawasaki Brute Force/Prairie/Bayou
    On my brute force 750 it runs good when it's driving down the road and not full of mud but when it starts getting muddy it will skip.. It almost seems like an electrical issue.. And when it gets in water it get much worse.. It will just skip and backfire.. Do you think that wires exposed could...
  8. 2006 Brute Force 650 valve adjustment problems

    Kawasaki Brute Force/Prairie/Bayou
    I recently bought a used 2006 brute force 650 sra a few months ago. When i first bought it it had major problems starting, no matter whether it was warm or cold out, and also had a low end sputter/miss/backfire. So after reading a lot about other people having similar problems i shimmed the...
  9. 2008 brute force sputterig/backfireing

    Kawasaki Brute Force/Prairie/Bayou
    Hey guys I'm new to the brute force but not to four wheeling. I picked up a cool 08 brute force 750 bike the other day 27" outlaws radiator relocation 2" lift I have a couple questions about it I was riding last night and all of a sudden the bike started sputtering real bad and backfiring low...
  10. KFX 700 No power.

    Kawasaki KFX700 V-Force
    Need help. I have a kfx 700 with no power. will not stand up. Drive able in low rpm's ( very slow) it has to be valves. backfires LIKE crazy. it did run fine sometimes in till u go to fast on top end for to long. it messes up no power. it might go back to normal. but it didn't this time.we...
  11. 94 bayou 300 wont start, pulling my hair out!

    Kawasaki Brute Force/Prairie/Bayou
    ok here is my problem. When trying to start my 300 bayou it sounds like it is only hitting on like every 4th stroke. wont run just pops every once in awhile. when i test the spark plug against the block it sparks every compression stroke. Here is what i have done or replaced. New wiring harness...
  12. need help!

    Kawasaki Brute Force/Prairie/Bayou
    i have a 2007 prairie 360 it has been not idleing very good for a while it will hardly keep running and will backfire a little i think it might be a valve but now when i try to put it in gear it grinds and if i try to start it in gear it tries to start moving please help