View Single Post
Old 03-19-2003, 03:37 PM
ericnguyen ericnguyen is offline
Registered User
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.

Reply With Quote