Throttle doesn’t snap back
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Road Warrior
Joined: Sep 2014
Posts: 1,482
Likes: 89
From: Missouri
Throttle doesn’t snap back
This has been a long standing issue since I’ve switched from CV to S&S. I’ve noticed that even with the adjustment it will move back but not smoothly. So my current theory is that the cable guide is too tall. I’ve got the CV guides on there but have aftermarket cables. Could using the short guide help?
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Road Warrior
Joined: Sep 2014
Posts: 1,482
Likes: 89
From: Missouri
I have had the throttle cable half tight and no tension on the idle cable. This is the only way I could get close but it’s never perfect
Tourer
Joined: Sep 2020
Posts: 326
Likes: 103
From: phila
i have s&s carb with cv guides .. i got prewired bars,and new cables,
cable metal end wouldnt fit in the guide, i had to open the guide up a tad so it slide in and seated right ..if im not mistaken it was the return cable
i also did new grips... to me it sounds like your grip is rubbing, cause even with some tension on the return it should come back, maybe not snap back.. but should return
cable metal end wouldnt fit in the guide, i had to open the guide up a tad so it slide in and seated right ..if im not mistaken it was the return cable
i also did new grips... to me it sounds like your grip is rubbing, cause even with some tension on the return it should come back, maybe not snap back.. but should return
Club Member
Joined: Sep 2010
Posts: 15,436
Likes: 7,130
From: Beyond Fucital
All the "snap" is done by the carb spring.
Loosen the adjusters and check the carb spring return.
Then twist the throttle to see if there's any binding.
Turn the throttle until it stops without forcing it past the stops inside the perch,
then take up the cable slack with the adjuster until you've got the carb fully open.
Then take up the slack in the return cable. The return cable doesn't control the carb it controls the throttle.
Technically it's a safety and wasn't even on early bikes. If it's not snapping back it's either the carb spring or the throttle "GO" cable.
Both cables are "PULL" cables.
1 pulls the carb open via the throttle
1 pulls the throttle back via the carb spring. (this is where the "SNAP" comes from.)
Check for possible binding in the cables caused by routing too.
PS. You probably know all this but as you're having a problem it couldn't hurt to go over it again.
Loosen the adjusters and check the carb spring return.
Then twist the throttle to see if there's any binding.
Turn the throttle until it stops without forcing it past the stops inside the perch,
then take up the cable slack with the adjuster until you've got the carb fully open.
Then take up the slack in the return cable. The return cable doesn't control the carb it controls the throttle.
Technically it's a safety and wasn't even on early bikes. If it's not snapping back it's either the carb spring or the throttle "GO" cable.
Both cables are "PULL" cables.
1 pulls the carb open via the throttle
1 pulls the throttle back via the carb spring. (this is where the "SNAP" comes from.)
Check for possible binding in the cables caused by routing too.
PS. You probably know all this but as you're having a problem it couldn't hurt to go over it again.
Last edited by RANGER73; Jan 16, 2022 at 07:23 AM.
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,145
Likes: 7,658
From: Poolville
I have found when using the taller guides to loosen the right side tank and run the cables along the back bone to reduce the angle of the cable going into the guide..
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Seasoned HDF Member
Joined: Apr 2010
Posts: 9,588
Likes: 7,970
From: Long Island, New York
You need to determine what is causing the bind up. Three places:
1- the carb
2- the cables (two of them)
3- the throttle assembly.
Disconnect the cables at the carb, does the carb snap back by itself without being influenced by the cables? If no, carb is problem.
If yes, does the throttle assembly turn freely? If no, disconnect cables and determine if cables or throttle assembly.
Either cable can be an issue. Some can be fixed with lubrication, some need replacement. Good luck.
1- the carb
2- the cables (two of them)
3- the throttle assembly.
Disconnect the cables at the carb, does the carb snap back by itself without being influenced by the cables? If no, carb is problem.
If yes, does the throttle assembly turn freely? If no, disconnect cables and determine if cables or throttle assembly.
Either cable can be an issue. Some can be fixed with lubrication, some need replacement. Good luck.
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