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View Full Version : blaster run a little different



clayton213
08-01-2008, 12:35 PM
ok so we just put a oil block off kit and new reeds and its idling real high and when u give it gas it starts boggin....
i askd 1 of my friend and he said it might b the air mixture screw,,, but we think its the main jet what could it b?????

help fast i have a race 2marow!

thans clayton

bigbad400
08-04-2008, 08:38 AM
the new reeds threw off all your jets some probably, mostly thow the pilot jet, it controls idle to 1/4 throttle so thats why its running high. more pressure from the smaller jets will cause the main jet to operate differently too, you may only need to move the clip up one on the needle. but its not one thing its probably all the adjustments are slightly off.

John451
08-05-2008, 08:18 AM
Originally posted by bigbad400
the new reeds threw off all your jets some probably, mostly thow the pilot jet, it controls idle to 1/4 throttle so thats why its running high. more pressure from the smaller jets will cause the main jet to operate differently too, you may only need to move the clip up one on the needle. but its not one thing its probably all the adjustments are slightly off.

Yes had the same problem on my rm125 you need to drop the needle (raise the clip in the slide) 1 or 2 slots. The rest can be controlled with the mixture screw and idle screw (if blasters have that) I have one but i dont even know if it does lol.

mvvette97
08-12-2008, 12:08 AM
I would say you have an air leak around the reed cage.

clayton213
08-20-2008, 05:29 PM
thanx 4 the help guys we gotter done

86 Quad R
08-21-2008, 12:17 PM
Originally posted by clayton213
thanx 4 the help guys we gotter done

and....... what was the culprit?

HmF300ex
08-21-2008, 05:12 PM
My old 400 was doing that it was a 2000, rejetted it everything and couldn't find out the only thing we could guess was the top end needed a rebuild, it would run fine until you opened it up in 3rd. We rebuilt the top end still did it, it ended up being the rubber joint that goes from the carb-air box. lol I'm glad i spent $100 rebuilding it though it ran really strong afterwards