Throttle sensitivity on my 1985 3.2

[911hillclimber]

My 73T had a 3.2 engine installed in 1995, 50K miles old.

It is now around 130K miles in and untouched apart from the alternator about 10 years back and annual servicing.
Plug and cap replaced 2 years ago.

The engine runs really well, bit of blue smoke on start-up after dormant for a few weeks etc, nothing to worry about I think.

From cold to hot it runs and starts perfectly, lovely engine.

However...

Ever since I had it installed and wired up (by Bob Watson) the throttle action has been irritating, but, only taking the engine from 800 tick over to 'just' getting going.
If i really squeeze the throttle pedal super carefully the engine will come off tickover and rev as you would want, but if you drive the car normally on the road there is this sudden jerk and all is then well.

I feel this is when the throttle lever on the engine throttle body just comes off a micro switch on the side of the body. The switch position cannot be adjusted and is depressed (closed?) when at tick over by the throttle arm.

So:
What does this switch do and how do you set the throttle action to be as smooth as a normal car?

It is a real irritation when in traffic!

 

[Greenman986S]

At the risk of teaching you to suck eggs... i had a similiar issue (albeit on a very different car)

I managed it by changing my foot position so that my heel was against the base / hinge of the throttle pedal and I could pivot my ankle, rather than extending my leg...if that makes sense..

 

[911hillclimber]

Thank you for the thought. I've driven this car/engine since 1996/95 and no matter what, this abrupt jerk as the throttle is just depressed a mm or so has happened. It only makes itself obvious when in traffic, stop/start.
General running on gentle or full throttle is fine, just that place where the switch is closed/opened.