My son has a Baja 49, 4 stroke, when he starts it ,it runs at full throttle, I adjusted the throttle cable and the carburetor by 1 1/2 turns with no change, can anyone help me?
2006-09-02 12:24:15 · 7 answers · asked by Meliss 1 in Cars & Transportation ➔ Motorcycles
On a 4 stroke, an air leak wouldn't cause the bike to run at full throttle. That's a 2 stroke characteristic. For some reason the throttle slide isn't returning.
-When you turn the throttle twist grip (handlebars), do you feel any spring tension? Will the twist grip return on it's own? Could be a damaged cable.
-The throttle slide has a groove cut in it to keep it from turning. It rides on a pin in the carb. The pin can be damaged, jambing the slide wide open.
-The slide could've come up high enough to turn and spin, just enough so the groove and pin weren't lined up.
-The slide can be gumed up with bad gas, preventing it from returning.
-The jet "needle" (in the throttle slide) might have come out of the jet needle holder (the main jet screws into it in the float bowl).The needle might not be able to get back in the hole, holding the slide up.
-Look in the back of the carb (where the air box manifold attaches) and try to lift the slide. It should spring closed on it's own.
-Remove the carb top and slide. Check if the needle is in properly. Re-install the slide. Does it feel like it's going in all the way without any resistance?
2006-09-02 14:38:10 · answer #1 · answered by guardrailjim 7 · 0⤊ 0⤋
You may need more turns on the carb. The throttle cable adjustment is only to adjust the carb's full range then youre done with it.
If you have already adjusted the carb and it is still going full throttle, you probably have a leak somewhere.
Check if the carb and header are tighten down to torqued spec.
2006-09-02 12:32:14 · answer #2 · answered by hocky_06 3 · 0⤊ 0⤋
Either the cable to the carb is stuck or something on the carb itself is keeping it open. There should be a stout little spring on the carb to slam it shut. If you don't see one look at the linkage for a hole or notch where one might need to be and that is likely the culprit.
Good luck
2006-09-02 13:24:21 · answer #3 · answered by Harley Charley 5 · 0⤊ 0⤋
The cable and cable cover need replacing. also the carb throttle bodie is sticking. Rebuild carb.
2006-09-02 16:31:50 · answer #4 · answered by Anonymous · 0⤊ 0⤋
sounds like the carb slide is hanging up , you have to take the top of the carb off and pull the side out , check and see why its hanging up, put a little wd40 on it and see if that helps otherwise you might need a new slide
2006-09-02 12:36:21 · answer #5 · answered by bill j 4 · 0⤊ 0⤋
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2016-10-01 05:42:57 · answer #6 · answered by ? 4 · 0⤊ 0⤋
take it to a motorcycle shop and pay someone that knows what they are doing to fix it. make sure that the throttle return spring is attached properly.
2006-09-02 12:31:50 · answer #7 · answered by justnotright 4 · 0⤊ 0⤋