Good morning, my Dad's friend has a problem with his MB. Just happened recently, 1500 rpm idle. We opened the air filter housing and when we started the engine, the round flapper for the injection system went down. Is this normal? I though it should stay closed and the idle controller was the one to give air for the engine. Any tips are much appreciated. Thanks in advance.

Erick

__________________
96 Legacy LSi wagon
92 Mitsu Expo
95 525iT
1983 300TD clackclackclack sold
1972 Toyota Corolla wagon TE28 sold
1991 Galant VR4 pshhhhh non-op
1989 Montero RS pop's ride