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Re: Orifice Seat in a ZS Carb

To: "Dr. Faustus" <dr_faustus@pcisys.net>,
Subject: Re: Orifice Seat in a ZS Carb
From: Bill Manning <gripdad@sbcglobal.net>
Date: Tue, 17 May 2005 12:48:59 -0700 (PDT)
Andy,
I found that every time I went for a smog test, here
in Los Angeles, that the car would run like crap when
it was set up to pass. This was on a newly rebuilt
engine with everything set to specs. I always richened
the mixture and advanced the timing to get it to run
OK after the test. If you remove the air pump and air
rail it will run great and not backfire. I would leave
the catalytic converter on because it didn't seem to
create any drivability problems.
                       Bill 
--- "Dr. Faustus" <dr_faustus@pcisys.net> wrote:
> At 12:16 PM 5/17/2005, Bill Manning wrote:
> >Bob
> >I just went through this with a 76 Midget-same
> motor.
> >I took it to a local MG mechanic who smogs these
> >things all the time. He replaces the jet with a
> high
> >altitude jet and sends them through. If you are
> close
> >to Los Angeles I'll give you his name and address.
> He
> >doesn't want this to become common knowledge for
> >obvious reasons.If the catalytic converter is
> working
> >and the engine in decent order it should go right
> >through. You need a tool to replace the jet but
> >centering the jet is for SU carbs.The tool and jet
> >should be available at one of the usual sources.
> Moss,
> >Vicky B or The Roadster Factory
> >                                  Bill
> 
> You could also run the gas tank down to about 1
> gallon. Add a gallon of 
> "Denatured Alcohol" from your local big box store. 
> Immediately go test 
> your emissions.  Then refill your tank with whatever
> quality gasoline you 
> prefer to run.
> 
> However...you'll be much better off fixing whatever
> problem is causing you 
> to fail emissions.
> 
> Andy L. 





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