The VW Idle Shut-off Valve is a smog control device that prevents fuel from spilling into the carburetor when the car is shut off. The idle shut off valve will not keep a car from running, if you suspect a faulty idle cut off valve is causing an issue with your carburetor, unthread the valve and plug the threaded hole. If the issue still exists, the solenoid is not the problem. The plunger style fuel cut off valve fits 1971 through 1974 Standard Beetles, 1971 through 1974 Super Beetles, 1971 through 1974 Karmann Ghias, 1971 through 1974 Type 2 Bus models and 1973 through 1974 Things. The idle shut off valve is also referred to as a cut off valve, cut-off valve, idle valve or idle cut off valve.
The Idle Cut Off Valve is only a smog control device. It is designed to shut off the idle circuit when the ignition is turned off. It can cause problems with an engine idling but is not normally the cause of carburetor problems.
You can see if the valve is causing the problem by unscrewing it from the carburetor. Then hold your finger over the hole on the carburetor while a friend starts the car. If the car starts and runs fine, the valve was the culprit. If the same problem exists, the valve is not the cause.
California Prop 65 Warning:
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.