WHERE IS THE LOCATION OF THE AIR INJECTION CHECK VALVE

2000 BMW 328

Tiny

edling613

October, 5, 2012 AT 10:08 PM

It is a small plastic check valve. I have located all the vacume lines I can find and cannot find the check valve. Can anyone help the car is 328ci. OBD codes are P1423 and P1421.

3 Answers

Tiny

hmac300

October, 6, 2012 AT 12:04 AM

It's eitehr the one on the air pipe to the exaust or it's on the air pump itself.

Tiny

edling613

October, 6, 2012 AT 8:19 PM

Checked both could the codes mean something else? Already checked air pump control valve, and vacuum lines.

Tiny

hmac300

October, 6, 2012 AT 9:20 PM

If you weren't getting vacuum to operate teh valve then that could be it. We dont 'have any good drawings/placements of that part. All we have is a typical type thing with nothing for your car. BMW and Merecedes like to look you into their dealers so they only give very basic stuff.

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