78 NYB CARB PROBLEM

[Mark Blitman <fedsales@xxxxxxxxx>]

i think kerry is right..i had an'80 buick with the
exact same problem;turned out the intake was leaking
and after i sealed it up my gas mileage went to 32MPG
on the hwy..i had several '77-'78 C bodies and they
all acted like yours..and after rebuiding the
thermoquad they ran the same..so look elsewhere..your
carb guy is wrong..i had both manifold gaskets
replaced and it didn't affect the thermoquad one
whit..good luck!!!
--- Kerry Pinkerton <pinkertonk@xxxxxxxxx> wrote:
> Sounds like a vacuum leak to me.  Thermoquads have
> issues but are good carbs
> overall.
> 
> KerryP
> Patch panels fabricated
> Pinkertonk@xxxxxxxxx
> dte.net/57imperial
> Imperials -- 50 Limo, 57 roadster, 61's, 62, 68
> Convert, 73, a 66 300 and a
> bunch of lesser marques
> ----- Original Message -----
> From: Robin Giesbrecht <robings@xxxxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Friday, November 14, 2003 4:32 PM
> Subject: Re: IML: 78 NYB CARB PROBLEM
> 
> 
> > Quite honestly I think that is a load of crap.
> This car probably has a
> > Thermoquad which has always worked very well for
> me. Matter of fact I have
> > no problems with any Carter carbs AFB,AVS or
> Thermoquad.I think you are
> > being taken for a ride.
> >
> >
> > >From: Bruce Stubblefield <audiblefeast@xxxxxxxxx>
> > >Reply-To: mailing-list@xxxxxxxxxxxxxxxx
> > >To: mailing-list@xxxxxxxxxxxxxxxx
> > >Subject: IML: 78 NYB CARB PROBLEM
> > >Date: Fri, 14 Nov 2003 12:11:00 -0800 (PST)
> > >
> > >Hello everyone,
> > >    I have carb problem with the mighty '78 NYB. 
> Smog
> > >approval required that I spend a small fortune on
> a
> > >new carb.  I had the work done at a local place
> that
> > >does only old cars, is run by a guy older than 55
> and
> > >has done good work for me in the past.  Bottom
> line,
> > >the car finally passed the smog, but now runs
> very
> > >poorly.  The mechanic tells me that the severe
> exhaust
> > >leaks that the car has (manifold gasket,
> > >flange/connector after the manifold, resonator,
> etc.)
> > >cause the carb to perform badly.  Does anyone
> know if
> > >this is reasonable?  He also says that "none of
> these
> > >carbs for this car were ever any good."  This
> sounds
> > >like nonsense to me, but the smog place claims to
> have
> > >screwed with the thing for 4 hours to get it to
> pass.
> > >     The symptoms are rough ilde after car  is
> warm and
> > >stalling when I punch the gas when the car is
> under no
> > >load(coasting or in neutral).  Idle is also set
> way
> > >high, probably to mask the rough idle.   Any
> comments?
> > >  Has anyone had GOOD luck with replacement or
> rebuilt
> > >carbs for this car?  If I take off all the smog
> stuff
> > >and plug up the vacuum hoses, should that help?
> > >
> > >Many thanks!
> > >Bruce S
> > >69 coupe
> > >78 NYB
> > >
> > >
> > >
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