Issue with Idle / High RPMs

[KillerB]

Ok, Jet Engines I know... Car engines a little.... Carburetors less...

Here's my problem, hopefully it's a simple fix. (Ha! Never!)

My Car starts and runs well, but has a tendency to stay in the 3000 RPM range, when I come to a stop at a light, or park etc... it will only drop down into a respectable range when I gun the throttle. 70% of the time it will drop happily into low idle.

1979 with 2000cc and 34 ADF.


Any Ideas?

[So Cal Mark]

is the choke opening fully? Is the throttle cable adjust with some slack?

[racydave]

It sounds like either the choke, or a binding throttle. You can deduct it at the carb while running, also the gas pedal and cable are suspect. Ive seen times when a stronger return spring was required too.

[KillerB]

The throttle works smoothly, there's no slack in the cable, and the spring is strong. I'm leaning towards the choke... I know that there are all kinds of bits, cams, springs etc.. that can be worn or binding. Can I take it apart without disconnecting ths coolant lines?

[racydave]

Can you verify thats the problem while watching it run?