Quote:
Originally Posted by modmonster
maybe my car has no vacuum ? is this possible?
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Only when the engine is turned off.
You need a vacuum source coming from a simple (no diaphragm or accumulator) fitting on the intake manifold.
If there is no such fitting, examine the intake manifold for a plugged threaded hole. In which case remove the plug and screw in a suitable fitting purchased from you local auto parts store.
HTH