Blaster throttle stuck pinned

[mattsteibler26]

I have a 1998 yamaha blaster all stock bored .20 fresh. new gaskets and piston. Tried 2 different carbs and brand new reeds and the throttle is stuck pinned. What is wrong with this thing?

 

[JonS]

is the TORS box still installed? you know on top of the carb. if its unhooked it could still hang up. sounds like it to me unless something is haywire in the throttle housing or the cable itself.

 

[mattsteibler26]

TORS brick is still there but i cut out all the tors wires and everything inside the throttle housing is normal.

 

[Paulie B]

TORS usually stops it from running...
You got an air leak somewhere or a sticky throttle cable.

 

[JonS]

TORS brick is still there but i cut out all the tors wires and everything inside the throttle housing is normal.

okay then. that's your issue more than likely. the TORS can still get hung up even though not hooked in. take the cover off the side of the mechanism and check the cable.

 

[mattsteibler26]

Its like FULL throttle.

 

[Blaaster]

If it starts and runs flat out with the choke on I would suspect an air leak somewhere.

Might pay to do a leak down test.

 

[mattsteibler26]

I took the thing off the side and the cable is in good working order.

 

[mattsteibler26]

With or without the choke it still gets stuck full throttle

 

[JonS]

do a leakdown test then.

 

[mattsteibler26]

Its dont seem like an air leak. Its like the throttle is being held in

 

[JonS]

is your needle seated properly in the carb?

 

[Scrappy]

How does the throttle feel when you push on it? Does it have resistance like normal or do it feel like nothing there.

 

[Blaaster]

Pull the air cleaner rubber off and find out if the carb slide is bottoming out to where it should be.

If there is no air leak the only other way air can get in is past the carb slide.

Is the throttle cable free and adjusted for a little slack at idle?

Is the spring in between the slide and the cap.

 

[Painthehouse]

Does it rev out from idle or do you have to push the throttle wide open for it to stick?
My carb slide used to stick after tapping to WOT for a second. Throttle cable was worn and snagging. New cable fixed it.

What happened a while later was the needle was coming out of its seat at WOT. I'd have to pump the throttle till it found the seat again. Dont ask me how but a reassemble fixed it.

 

[Awk08]

is the slide in the carb with the pin aligned, it only goes one way

 

[Blaaster]

What happened a while later was the needle was coming out of its seat at WOT. I'd have to pump the throttle till it found the seat again. Dont ask me how but a reassemble fixed it.

Carb cap must have been very loose for the needle to jump out!

 

[mattsteibler26]

The needle is in tight. and when i start it i dont even touch the gas, it just goes to full throttle

 

[StrokedTater244]

The needle is in tight. and when i start it i dont even touch the gas, it just goes to full throttle

dont you have 2 threads on this problem? if not, i apologize.

 

[Larry's Shee]

dont you have 2 threads on this problem? if not, i apologize.

No, he has three all started yesturday. :-/