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Tuned one day, gone the next


ginger

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So after a long stuggle, i had my shee finally jetted right and the thing was fasttt.

 

i rode it a few times after and it still ran fine. last monday the 26th, it was breaking up a little, but not terrible and it would clear out.

 

Well yesterday i went to go ride it, and it was rich as hell. The weird thing was, when i tuned it, it was around 50 degrees, and when i went to ride it yesterday, it was in the upper 30's. If the tempature did anything, it should have leaned it out.

 

I didnt touch the carbs on it between the rides.

 

Anyone have an idea on whats going on?

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dirty air filters, fouled plugs cause you might not have jetted it as close as you thought, breaking down ignition, or loss of compression from being jetted too lean and it's going down hill.

 

air filter is new, same one i jetted it originally on it, and compression is good, i have maybe a hour on the top end.

 

i dropped mains yesterday to try to solve the issue from 310's to 290's and it didnt make much of a differance.

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I trimmed one wire not the other, but i think its a carb issue.

 

mods are:

 

mild dune porting unknown who did it.

cool head with 21cc domes

bored to 65mm (not that it matters)

toomey t5's

k&n air filter,

billet water pump impeller

i have a timing plate but havent installed it yet.

 

 

180ft elevation

temp is around 35 degrees.

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jetting is probably pretty close then. only thing that could be happening is the float lvl set too high. jetted it on flat surface i assume and now that it's jetted you are riding in rough terrain and causing the floats to bounce and overfill the bowls. just merely a guess though.

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  • 1 month later...

With my mods.... 30 pilots and 300 mains will take me down to about 15*f. If I have to install 310's... I stay home. Don't even know why I bought them ;) Clean Everything check your floats, reeds, air filter, (outerwear if you got it... mine cause me run-ability issues all the time. Amazing how fast them bastards clog up), and move on down the line. You'll finger it... just takes a minute. :cheers:

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