Hi guys, My female friend inherited a 1978 Vetter from her father. She had it overhauled before driving it 1500 miles to were she lives. Anyway, I was checking it out with her, and on startup, the car idles on high for approximately 1 minute. and it is at 1500 RPMS. Even when warm. It sounds like the engine is screaming. If you try to kick it down it stalls. It has to run like this for a minute and then it calms down to 800 RPM's. Is this normal? To me it seem really high. Especially when it is 106 degrees outside and you can't kick down the high idle for a minute.

Hi guys, My female friend inherited a 1978 Vetter from her father. She had it overhauled before driving it 1500 miles to were she lives. Anyway, I was checking it out with her, and on startup, the car idles on high for approximately 1 minute. and it is at 1500 RPMS. Even when warm. It sounds like the engine is screaming. If you try to kick it down it stalls. It has to run like this for a minute and then it calms down to 800 RPM's. Is this normal? To me it seem really high. Especially when it is 106 degrees outside and you can't kick down the high idle for a minute.


You need to adjust the cold idle speed to your liking. To do so, you may have to bend the rod that goes from the choke butterfly to the fast idle cam. And be sure to put a drop of oil on the fast idle cam's pivot point. So it rotates freely.

It should calm down to 475- 500 rpm after the choke housing warms up and the fast idle cam is on it's lowest point. If you know anything about Rochester Quadrajet carburators, the adjustments should be easy to make.

Make absolutely sure you don't have any vacuum leaks first. So you don't adjust something that doesn't need adjusting.