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05 Brute 750: Popping on decel, won't idle unless choked, and low power. Rejet?

No Plugs2010-08-11 09:35:28 +0000 #1
SO, I am still fighting with my Brute not wanting to idle unless the choke is at least halfway on, popping as soon as i get off the throttle, and its low on power. I have pulled the carbs off numerous times and have cleaned the hell out of them. Played with the chokes, nothing. So, the only thing I can think is that I am running lean and need to rejet. I did not put two and two together until just now and realized that the previous owner put a UNI air filter on, and i am assuming did not rejet. Also, it is definitely louder than a stock brute, so he may have done something along the lines of the stock exhaust mod.

So, unless anyone else has any ideas, i am assuming I have to rejet. I am, however, unsure what jets I need. So, is there a kit out there where I can buy a bunch of different jets/needles, etc, and swap until I find something good or do I have to buy them separately?


wood butcher2010-08-11 09:50:18 +0000 #2
dyno jet kit, it will come with 4 or 5 diff jet sizes and an adjustable needles
hondarecoveryman2010-08-11 09:55:01 +0000 #3
Most jet kits include several different jets etc. But IMO you have a leak between your carbs and heads, like maybe a cracked boot or loose clamp , to be that lean , did you recently snorkel it? that could explain it . but that is really lean
No Plugs2010-08-11 10:24:53 +0000 #4
Thanks. Ill check that out. Anybody else have any input?
KMKjr2010-08-11 10:54:55 +0000 #5
Vacuum leak or dirty carb?

Is it was modified, you would have to assume it was running fine afterwards (or was already re-jetted?). Is this a new problem or existing? Has it been swamped?
J2!2010-08-11 09:55:25 +0000 #6
Sounds like a vaccum leak to me or even an exhaust leak. Check for both..Vaccum leak will make it run lean, exhaust leak will cause the popping.. Just a thought.. Mine was popping, I found the exhaust leak, and it fixed it..



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