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Old 07-02-2011, 07:40 AM   #4
Parts hoarding partner...
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Join Date: Nov 2007
Location: Toronto
Posts: 3,429
Originally Posted by Eurostyle View Post
The air pump only comes on for short time at cold start up...No way near "especially after a bit of driving" like in his case...Not even mentioning the pump makes a loud sharp (sucking/compressor) noise, not ticking/knocking!
one can never tell; I've heard stranger things under an engine bay. the air pump is suppose to come on for a short time..but who really's obvious hes going to need a stethoscope to narrow down the potential area - needs investigating and shouldn't omit any possibility. process of elimination!!

I think I've had 18 bmw's in 6 years.

1 90 325is white - keepin
1 87 325i vert -red - keepin
latest addition 1 88-325is red - parts
latest addition 1 89-325i vert - white -fixin/sold
latest addition 1 92-318i vert - blue - parts
latest addition 1 87 325is blk - parts.
latest addition as of 2013-Gold 87-325is auto! it's a keeper!
KEEPER 88 5sp Vert 2016
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