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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!ftpbox!mothost!lmpsbbs!NewsWatcher!user
- From: Carr-C10973@email.comm.mot.com (Eric Carr)
- Subject: Re: Exhaust Moisture
- Organization: Motorola LMPS Engineering
- Date: Tue, 29 Dec 1992 13:15:42 GMT
- Message-ID: <Carr-C10973-291292131014@145.1.92.116>
- Followup-To: rec.autos.tech
- References: <Dec21.005807.26476@yuma.ACNS.ColoState.EDU>
- Sender: news@lmpsbbs.comm.mot.com (Net News)
- Nntp-Posting-Host: 145.1.92.116
- Lines: 53
-
- In article <Dec21.005807.26476@yuma.ACNS.ColoState.EDU>,
- spatton@lamar.ColoState.EDU (Samuel Patton) wrote:
- >
- > I have a 78 Trans Am with a pontiac 400 and Borg Warner T-10 four speed
- > installed.
- >
- > Lately I have noticed that on the drivers side exhaust ( its dual exhaust )
- > alot of water vapor comes out of the tailpipe while noe is coming out of
- > the exhaust from the other head...
- >
- > What could be causing this??? Is my head gasket going bad and leaking coolant
- > into the combustion chamber?
- >
- > I have noticed that the operating temp. has been running higher than normal
- > and went and bought a thermostat today but didn't yet put it in.
- > ( normal op. temp. =180F, running at about 210-220F after driving for a while
- > which really concerns me... )
- >
- > Any and all help will be appreciated...
- >
- > My plans for tomorrow are to install the new thermostat and then make sure
- > that the coolant is full to the proper amount. If it then starts to do this
- > fade toward a higher temp. as I drive it for a while... What does that indicate?
- >
- > God, I really don't want to replace a head gasket!
- >
- > Sam
-
-
- I would tend to agree more with what Jonathan Skean wrote. Heat riser
- valves are known to rust into a certain setting (open or closed) and have
- to be removed and cleaned. His suggestion shows how to do it.
-
- As for a blown head gasket, yeah - you'll get some moisture in the exhaust
- from it but usually the engine runs noticably worse if this is the
- condition. It's normal for moisture to be in exhaust, especially when the
- engine and exhaust aren't up to running temperature yet (mufflers mainly
- fail from rusting inside out). A compression check should give you an idea
- if you're up to specs, and a vacuum gauge will help determine if there are
- any other problems.
-
-
- _________
- ________ / '67 /_________
- / Caprice Sport Coupe /
- / 396cid 365hp / See the USA in an old Chevrolet
-
-
- /________ USA-1 _________/
- /_________/
-
-
-
-