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  1. General TRX Discussions
    Hey guys, my first post here. I have an 04 TRX450R that I rebuilt. It has a stage 3 hotcam and a Empire Industries exhaust. Quad rips real good, pulls hard. I am having a fuel issue being on the stock carb. I have been looking for an 06+ crf450r carb because it seems like everyone is doing...
  2. Engine
    Hello, wondering if anyone can help me out. So I recently bought a 08 trx450er. The engine starts fine cold but once it warms up it dies out and won’t restart. I tried to miss with the flex jet and raise the idle alittle but because my suspicion is that it’s running lean (it also cuts out when...
  3. Engine
    Hello, wondering if anyone can help me out. So I recently bought a 08 trx450er. The engine starts fine cold but once it warms up it dies out and won’t restart. I tried to miss with the flex jet and raise the idle alittle but because my suspicion is that it’s running lean (it also cuts out when...
  4. Engine
    05 with fcr carb, power bowl 2, fci intake, fci filter. The trouble I am having is the bowl leaks only when I’m riding not when it is setting still at idle. I’ve adjusted the power bowl 2 dead on. Any less and it sputters with a blip. The carb idles good, I have no popping at any range and...
  5. Engine
    First time posting. Read through the forum all the time. Great informstion. Im having an issue with my 05 450r. After a hard pull through top of 3rd sometimes 4th my quad will bogg hard, no throttle response, coast to a stop sometimes it dies. If i wait 10 secs or so i can start it up first...
  6. Engine Tech FAQ
    Hi, I just installed a stage 1 dynojet kit in my 04 trx. I put the clip position at 3 and 48 pilot and 112 main, also the main air jet blockoff. But I'm having issues... black smoke when revving, also bogs when snaping the throttle, and pops A LOT. before I put the kit in my bike it would pop...
  7. Engine
    Hey guys! New here! I recently just purchased a 05 trx450r. Purchased it knowing that it had some carb issues. Runs and start perfect. But when I give it gas it just stalls out immediately. So I tore apart the carb to clean it out. Noticed that it did need cleaned so I cleared all the passage...
  8. Maintenance
    Every time I clean my carb I have no spark for a couple of days, then it randomly comes back. I have not been able to find the issue or the solution. Anyone have any suggestions?
  9. Engine
    I have an 08 450er and a while ago out of no where it started to run worse and worse over a span of a couple weeks or so. When I try to crank it up I usually have to play with the idle screw a little and hold the gas a little just for it to start. (It also backfires sometimes when I try to start...
  10. Engine
    So I bought this 04 450r. It ran awesome. Noticed the air box lid was gone so I bought one. Still ran great. The hmf slip on fell off while riding as it was clamped on w tin. So I bought a mega clamp and made sure it wouldn’t come off. My last ride it started to sputter and surge after 1/2...
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