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  #1  
Old 06-02-2012, 09:43 AM
Weekend Warrior
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Default red exhaust pipe.

i have a 2007 suzuki LT-F250 and the exhaust pipe turns glowing red right after startup. have proper fuel, spark plug gap is good, and it seems to run fine. timing seems good too. anyone got any ideas?
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  #2  
Old 06-02-2012, 11:14 AM
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Maybe running to lean? What mods have you done to it?
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  #3  
Old 06-02-2012, 04:50 PM
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not sure that i can adjust carb. i dont see any adjustmen screws on carb. its a mikuni.
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  #4  
Old 06-03-2012, 12:11 PM
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Sounds like its lean. Might be a good idea to buy a jet kit for it. The jet kit should be quite helpful.
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  #5  
Old 06-03-2012, 12:44 PM
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Quote:
Originally Posted by treveiger View Post
Maybe running to lean? What mods have you done to it?
So any mods?

If it is all stock and running lean, maybe you should clean the carb to eliminate the possibility of a plugged/partially plugged jet.

Could the pipe be plugged?
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  #6  
Old 06-03-2012, 05:33 PM
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Default red pipe

no mods all stock. exhaust isnt plugged either. will look into carb. is it possible that breakin procedure was done improperly, because my friend said when they bought it new their kid took it out and it sounds like he ran the **** outa it! just curious. the quad isnt mine just tryin to help them out.
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  #7  
Old 06-03-2012, 07:41 PM
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1988 Suzuki LT250R
 
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A lean condition not enough fuel to much air can cause a furnace effect. Try riching up the mixture on the carb and see if it goes away. If the bike was just bored out and the stock jets are still in play this could be your problem. Not to mention if the bike is ridden in this condition the piston will eventually burn a hole in the top of itself and back to square one the bike goes.

I am guessing as my mechanical knowledge of quads is limited but I was able to find numerous cases of the same issue on the net.
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  #8  
Old 06-03-2012, 07:53 PM
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Default red pipe

ya im thinkin its a lean condition and motor is stock...no mods or anything. not sure how to richen mixture....is changing jets the only way or is there an adjustment screw? also the jets are what came factory and nothing has been touched since it was purchased. it seems to run fine. again i ask....could this prob hav originated from improper breakin? lol. thanks for all advice. am doin the work for a friend who knows nuthing. i figured it lean but not understanding why when its done it since day 1.
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  #9  
Old 06-03-2012, 08:42 PM
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I am not sure about the improper break in but the mixture can be adjusted a little with the mixture screw on the carb. There should be two screws, one will adjust the idle and the other will play with the amount of fuel being delivered. Turn the mixture screw all the way in with a screwdriver, the quad will begin to sputter like it's going to die and it just might if you are not quick. Once all the way in quickly turn the screw out 2 full turns and see how that works. Count how many turns it goes in just to see if it was lean, 1 turn or maybe 1.5
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  #10  
Old 06-05-2012, 02:42 AM
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Does it get hot just idling or hard running an riding? Jetting is the way to go if its getting hot riding around. Also do a good cleaning on the carb an make sure you blow out each individual jet to make sure she's all clean. If the carb is really gummed up it might just need a GOOD cleaning.
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Old 06-05-2012, 02:42 AM
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Tags
2001, 2007, artic, atv, cat, eiger, exhaust, exhuast, fire, fourwheeler, gap, glow, ltf250, pipe, plug, quad, red, running, spark, suzuki



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