High idle on start up then calms down ????????????

[BlasterCaleb]

Just got her on sunday its an 04 blaster supposedly bored .40 over, it had a fmf fatty but i put a stock on cause i really needed money and it was way to loud cause i ride alot late at night and dont need cops messing with me but anyway when you start it up for the first time in an hour or 2 it revs really high but if u put it in gear and move forward it stops. if u drive it for like 3 min then stop it will calm down and not do it anymore until you let it sit for a good wile and start her up again. it doesnt do it when you are riding it at all. and it runs normal other than that. what could it be? ive cleaned the carb, wich btw leaks, and still no cigar.

ANY HELP AT ALL?????? this is my first post so help me out please...:-/

 

[STRATTON]

Just got her on sunday its an 04 blaster supposedly bored .40 over, it had a fmf fatty but i put a stock on cause i really needed money and it was way to loud cause i ride alot late at night and dont need cops messing with me but anyway when you start it up for the first time in an hour or 2 it revs really high but if u put it in gear and move forward it stops. if u drive it for like 3 min then stop it will calm down and not do it anymore until you let it sit for a good wile and start her up again. it doesnt do it when you are riding it at all. and it runs normal other than that. what could it be? ive cleaned the carb, wich btw leaks, and still no cigar.

ANY HELP AT ALL?????? this is my first post so help me out please...:-/

give a time frame on how long it idles high.

all motors generally idle high at first, then after a bit comes down after the motor warms up.

on a quad pull the choke, give her a kick, once she starts up she idles high after a bit push the choke back in. once she warms up and gets close to operating tempature the idle should come back down.

did you try adjusting the idle screw ?

stratton.

 

[Blaaster]

Has the idle been set correctly?

 

[Awk08]

did you change the jetting back to stock after removing the fmf ?
230 main jet !


adjust the airscrew like this.........
http://www.blasterforum.com/carburetor-138/adjusting-your-airscrew-pilot-jet-51060/


has it been leakdown tested ? high idle is also a sign of airleaks, it must be airtight or ....boom

http://www.blasterforum.com/do-yourself-20/build-use-leakdown-tester-10663/

 

[Trinityblaster]

I don't know but iam just throwing this out there. Could it be a high fluctuation of cold air to hot air or maybe just staring for fuel at start up then it gets enough after a bit.? As I said I don't know for sure as I have never had this problem.

 

[Blaaster]

I may pay to do a leak test, flexing the carby boot while you do it, they have been known to crack and leak.

 

[beaten blaster]

im not sure if this helps but my blaster idles a little high untill it hit full operating temps then it smooths right out