just put my bike back together after a new valve job... started it up and it idles normal when it is cold and then climbs to 6000rpm after it starts to warm up i took the throttle cables off the carb to see if it did the same thing... could i just need to tighten the "return" cable if so how do i do this? it almost acts as if the choke is on when it isnt hopin for some diagnosing help

I would be suspecting a vacuum/fuel supply issue. Triple check all the intake connections ext... my thinking is, its running super lean upon startup, as the engine swells, the vac is compensated, giving you a higher rev.. just a quick thought.

i kno the intake connects are fine but ill check the carbs considering my dog knocked them off the work bench and see if i have any cracks... not much experience with vacumm carbs

another thing i forgot to mention is when i close the throttle by hand on the side of the carb it idles back down to normal but as soon as i let go of it it revs back up.

I would be suspecting a vacuum/fuel supply issue. Triple check all the intake connections ext... my thinking is, its running super lean upon startup, as the engine swells, the vac is compensated, giving you a higher rev.. just a quick thought.

all intake connections are good to go i just took carb back off and checked everything and it all seems normal think itsw time for the mechanic to check it all lol

Man, have you inspected the choke (start) cable? It's kinda sketchy how it attaches to the carb all the way on the right..

Man, have you inspected the choke (start) cable? It's kinda sketchy how it attaches to the carb all the way on the right..

yea the choke is real sketchy i checked it tho and its all good. talked to mechanic and he said to check the slides make sure one isnt stuck so thats what im doing tonight. if thats not the prob he is gunna help me diagnos it will let you all know what is wrong incase any of you have the same problem!!:toocool: