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- From: csmith@plains.NoDak.edu (Carl Smith)
- Subject: Re: WHAT IS AN A-I-R PUMP ON A CHEVY CAPRICE ENGINE?
- Sender: usenet@ns1.nodak.edu (News login)
- Message-ID: <C1DzMK.G1r@ns1.nodak.edu>
- Date: Mon, 25 Jan 1993 01:47:08 GMT
- References: <1993Jan22.082111.165610@dstos3.dsto.gov.au> <1993Jan22.170947.21129@colorado.edu> <1993Jan23.192801.25210@newstand.syr.edu>
- Nntp-Posting-Host: plains.nodak.edu
- Organization: North Dakota Higher Education Computing Network
- Lines: 38
-
- In article <1993Jan23.192801.25210@newstand.syr.edu> ravalent@mothra.syr.EDU (Bob Valentine) writes:
- >In article <1993Jan22.170947.21129@colorado.edu> bowmanj@csn.org (Jerry Bowman) writes:
- >[previous stuff about AIR pump removal deleted]
- >>
- >> The only reason not to remove it is that it ay be illegal in
- >> your area, After all it is just an air pump pushing air into your
- >> exhaust manifolds. If you only take the belt off exhaust can flow
- >> back into the pump andbuild up carbon deposits. Then when you want
- >> to reconnect it for an emmissions test it will not turn.
- >
- > Sorry, almost _ALL_ AIR systems have a built in check-valve, the
- >main purpose of which is to prevent damage to the pump and components
- >in the case of a backfire.
-
- But don't rely on the check valve to do it's job. Like I already
- posted once, I pulled the belt of my air pump. People told me it would
- seize, so once every couple months I would put the belt back on, fire
- up the engine, and squirt a small bit of oil in behind the pulley where
- it sucks the air in, then take the belt back off. But I forgot about
- it and soon had a seized pump. When I pulled the back off the pump,
- it was full of the same carbon that coats the inside of my tailpipe
- because my engine is out of tune. I cleaned the carbon out of the
- pump and got it working again. It turns out that my check valve
- was shot, and the exaust was blowing back into the pump. It also
- melted the plastic diverter valve so that it is seized in one
- position, which I haven't got around to replacing yet.
-
- >If I disconnect it, I remove the outlet
- >hose and give a liberal squirt of oil into it, then spin it. AIR
- >pumps do like to sieze if they are disconnected and left....
-
- Doing this once when you disconnect it probably isn't good enough.
- You should probably squirt a little oil in and spin it periodically.
-
- --
- ------------------------------------------------------------------------
- Carl D. Smith Inhale to the chief!
- csmith@plains.nodak.edu
-