Re: Driving about in ten degree weather-how about you?

Posted by Owen_Dyneto On 2013/11/25 16:28:38

On the driver's side of the engine, it's located at the intersection of the exhaust manifold and exhaust header pipe. For starters jiggle the counterweight arm when the engine is cold and see if it moves freely - it should have some spring action and return to an upper position. When the engine is warm the counterweight arm should be downward.

When the engine is cold the valve diverts exhaust gases to heat the intake manifold (base of the carburetor) to help vaporize the fuel mixture and aid combustion in cold running. As soon as the engine warms a bit the valve opens and the exhaust gases resume their normal path.

Some day when you have some spare time you might just browse the illustrations in the parts manual to familiarize yourself with you car - the valve is pictured in both Plate 27 and Plate 29.