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What's an Air Injection Pump designed for?

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03-19-2003, 03:37 PM

ericnguyen ericnguyen is offline

ericnguyen is offline

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Join Date: Jan 2003

Location: USA

Posts: 699

What's an Air Injection Pump designed for?

Dear friends,

It seems that some Mercedes cars have an AIR INJECTION PUMP
while others don't. Could someone tell me what an air injection pump is used for? I thought that the vacuum created by an intake stroke is enough to suck air (through the air filter) in a
normally-aspirated gas engine.

Thank you very much.

Eric

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