whipping/vibrating throttle cable

hello

recently since I changed the cams to KR i think this has started, I got a vibration on run off near the thottle body. I changed the cable because it seemed loose but its tighter now but still whips back and vibrates when coming off the gas, whats happening?

cheers all

[YOUTUBE]jPDEp8a6NRI[/YOUTUBE]

 

Tried. Now it's working

It can be back waves due to overlap, or backfire in inlet manifold.

 

whoops lol

try again, its a great vid

 

Is this odd or what? cant get a answer anywhere

 

I still have this issue, any ideas

 

1. Check your timing
2. Are you running super plus unleaded (98 RON)? - apart from pinking it can cause some other unwanted side affects.
3. Engine & gearbox mounts - are they in good order and secure?
4. Is the throttle cable ran correctly - are all grommets/supports in place - cable maybe directly on the bulkhead.

That's all I got.

 

Could it be stretched?

oddly the same is on both my valvers??!

 

I haven't heard of them getting stretched to be honest - are they genuine VAG cables?

It might be worth replacing one of them and see how you get on

 

I replaced one of them and it still whips back like that.

 

Well if you replaced one of them it's unlikely to be stretching, I would check the routing and securing of the cable in case of any crimping/pinching that may be happening.

 

ill have a good look at the routing of it.

 

Perhaps the cable is a little taut?

Sometimes they need a little slack in them or the engine rocking back and forth can pull on the cable.

This was particularly bad in the early beetles where the cable was a solid wire that ran straight off the pedal lever.

Modern tubular cables usually alleviate the problem but it's still possible.

Adjust so there's a little slack in the cable at the throttle body and see if that helps.

 

I'd say it was more slack than taut anyway