Alan,
If my limited mechanical knowledge serves me correctly:
Black = fuel (too much), timing or both
White = water (head gasket)
Bluish white = oil burning (bad rings,etc.)
(tell me if I'm wrong here, folks, cuz I'd enjoy the education)
So I'd check those carbs first! The compression #s aren't that bad. Mine are
much lower(bad head), but the other components are in good order so the car
runs pretty good, just not as much hp as it could have.
Hope this helps.
Dan
'73 B
-----Original Message-----
From: BIDGOOD, ALAN <BIDGOODA@pab22a.ssd.loral.com>
To: 'MG List' <mgs@autox.team.net>
Date: Friday, April 24, 1998 1:10 PM
Subject: Smoking 73 BGT
>
>Hi again
>
>I just recently bought a 1973 MGBGT in need of much
>restoration and attention.
>
>On driving it home (it runs!) my wife was following and
>noticed a fair amount of black smoke from the exhaust
>when I accelerated. I immediately thought oH no not the
>piston rings etc.
>
>Anyway a bit of background this car has been sitting for
>about 2-3 years, the previous owner claimed he started it
>up every two months or so. The oil looks pretty dirty,
>the car seems to run ok. the plugs are black.
>
>I checked the compression 'dry' last night, but the engine
>was cold. I got 120, 105, 110, 115 psi, which is not great,
>but is this bad enough to cause the smoking, or are the carbs
>just set too rich. Obviously I need to put in fresh oil etc. before
>I consider further driving etc..
>
>Which direction should I be directing my efforts. I really don't
>want to have major engine work, (obviuosly) - partly because
>this is the first MG I have come across that doesn't leave
>oil drips on the garage floor (yes there is oil in it)
>
>Thanks again for any comments.
>
>Alan B.'
>1978 Roadster (no smoke from exhaust)
>1973 MGBGT (Smokin!)
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