Hi Guys,
I have 1978 F100 V8.
When I come to a stop after driving the idle is real fast.
When I blip (quick pedal push down and release) on the throttle the idle comes right back down.


Is it a sticking throttle cable or broke spring?
Everything looks ok with the carburettor?


Thanks,

 

Sounds choke related

 

Sounds like the high idle cam is sticking

 

+1 Check that your choke and high idle cam are working properly.