Polaris ATV Forum banner
1 - 5 of 5 Posts

· Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Hey yall, i have a 250 trailblazer 2006 and the issue is idles fine and starts instantly. Ising electric start absolutely no issues. Goes into gear just fine reverse or forward is good. Lets say 0-6000 rpm is what the bike is capable of. At about 2500-3000 rpm the bike bogs down. It sat for about a year pulled carb and cleaned everything scrubbing gently and sprayed. No carmelized gas or anything. Just at wife open it falls flat on its face. I have the service manual but cant understand how to test the coil which was my guess. It tells me the coil should br .3 ohms for the primary anf secondary is 0-.2. The secondary winding is 6300 ohms. How can i test this?

Any help is greatly appreciated and thank you on advance for your time!
 

· Administrator
Joined
·
20,484 Posts
Sounds like a carb problem - either too much or too little fuel mixed with the air at WOT - what size main jet does it have in it? Standard was a #130. On second thought, is it the OEM Mikuni carb, an aftermarket general purpose Mikuni carb or a Chinese counterfeit look-a-like carb?
 

· Registered
Joined
·
2 Posts
Discussion Starter · #3 ·
Sounds like a carb problem - either too much or too little fuel mixed with the air at WOT - what size main jet does it have in it? Standard was a #130. On second thought, is it the OEM Mikuni carb, an aftermarket general purpose Mikuni carb or a Chinese counterfeit look-a-like carb?
It has orginal carb and orginal jets in the carb. I thought the same but i went through the entire carb even a rebuild kit from Polaris. It has no mods. Any part that has ever been replace has been from Polaris themselves. Id rather not pull the carb off again but if i have to i will. I was thinking reverse limiter limiting forward? The bike had a head battery and was jump started via jump box prob a good 8 times until i got a new battery. The guess was something electrical went bad with the jump starts. Rectifier? Regulator?
 

· Premium Member
2008 800 ho efi, 2019 850 SP premium
Joined
·
16,742 Posts
Hey yall, i have a 250 trailblazer 2006 and the issue is idles fine and starts instantly. Ising electric start absolutely no issues. Goes into gear just fine reverse or forward is good. Lets say 0-6000 rpm is what the bike is capable of. At about 2500-3000 rpm the bike bogs down. It sat for about a year pulled carb and cleaned everything scrubbing gently and sprayed. No carmelized gas or anything. Just at wife open it falls flat on its face. I have the service manual but cant understand how to test the coil which was my guess. It tells me the coil should br .3 ohms for the primary anf secondary is 0-.2. The secondary winding is 6300 ohms. How can i test this?

Any help is greatly appreciated and thank you on advance for your time!
Font Line Window Pattern Automotive exterior
to the forum
Ball Automotive lighting Vehicle registration plate Font Gas
 

· Administrator
Joined
·
20,484 Posts
Since the rec/reg and battery have nothing to do with the ignition system, whether it has a dead battery or not, it will not affect spark, but running without a battery can burn out all the lights - don't turn on the lights when the battery is dead or disconnected. The ignition is AC (like a lawn mower) and you kill spark by grounding the ignition. You can test ignition by unplugging the black wire from the CDI unit (it is connected by a bullet or spade connector) - unplugging the black wire means you cannot shut it off until the wire is plugged back together - if the problem is gone with the black wire disconnected, the the carb is eliminated as a problem. If it's exactly the same, it does not eliminate the ignition or the carb as the problem, but more often than not a bog is caused by the carb.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top