Sticky throttle on a 1FZ-F (carburated) (1 Viewer)

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Joined
Jan 5, 2016
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Location
Canada
Hi all, looking for some help, though realising that probably not many have a carbed engine here.

I have a somewhat sticky throttle. Basically, if I accelerate at WOT, it will definitely stick and rev high when clutched in, but even in normal driving, it’s a “little” sticky in that I have to pull back on it a little bit to reduce rpms. I’ve tried the following:

- replaced the throttle cable
- replaced the accelerator pedal assembly
- disconnected the hand throttle (in case it was pulling)
- even tried running with no throttle cable (see if the carb throttle sticks - but no, it’s perfect - also the carb is brand new)

It basically kinda feels like the pull back on the cable isn’t as strong as it should be. What could be the reason for this? Is it possible that some vacuum thingie is at fault? I’ve replaced the carb but I didn’t replace the round vacuum thingies.

Possible they’re bad and don’t pull the throttle back hard enough? Or am I knocking on the wrong door here?

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