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Discussion Starter #1
I need help!!! My trx bogs down when I give it gas and it idles okay around 1400 rpm.
What I have done :
I've cleaned the carb inside out made sure I can see light through the jets. I have changed the spark plug I have flushed my gas tank and added 93 Oct. What else do you guys recommend me to do I've read info all over this forum and I'm really getting fed up and motivated me to make an account and make this post hope fully I can get help and I can provide video and or pictures if needed.
 

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Please - you don't give it gas to accelerate - you give it air - as you open the throttle, it's the job of the carburetor to mix the correct amount of fuel with the air to support combustion. Ideally, 1 part of gas to 12.5 parts of air. At 14:1 it is lean and the engine produces excellent power, but runs hot. At 12:1, it is rich and while runs well, it wastes fuel.

Most bogging (if not an ignition or compression issue) is caused by too little fuel being mixed with the incoming air. What I do not know is if you have made any modifications to either the exhaust or intake. Just installing a different air filter is a modification and modifications to the intake affect carburetion immensely while changes to the exhaust have a lesser effect on the carburetor settings.

You may just need a thorough carburetor cleaning not just the jets - the passages within the carb must pass air as well as fuel.
 

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Discussion Starter #3
2014 trx 400 ex rough idle and bogs down around 1650 rpm (under throttle) Solved

Solved! I went again and cleaned my carb . And I noticed the throttle slide piston was stuck as if the throttle was fully engaged I messed around with it and added carb cleaner and kept opening and closing it till I notice it wasn't getting stuck. In conclusion, the reason it was stuck was because I would leave fuel in my carb. Hope this helps any one else.
 
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