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Smog test/Timing question

To: mgs@autox.team.net
Subject: Smog test/Timing question
From: "Alan Bidgood" <Alan_Bidgood@qmail4.nba.TRW.COM>
Date: 26 Mar 1996 07:49:58 -0700
Thanks Bill, I'll try and send this again -

Hi, I've been subscribing to this list for a little while, and have noted
the wealth of knowledge and experience out there.  Well now it's
my opportunity to ask a question:-

Recently (this past weekend) I took my 1978 MGB Roadster in for
the dreaded California Smog inspection (which incidently it had
passed with flying colors 2 years ago).  Anyway it just scraped 
through, with the proviso that they reset the timing which was at
15 dbtdc to the required 10 dbtdc. (for an additional 10 dollars). 
The thought of having to go away and returning to repeat this 
awful experience of them revving up my car, pulling around the 
hoses etc. etc.and of course next time it might fail.  I therefore 
decided to let them adjust the timing, having checked my book 
which agreed it should be 10 degrees.
Anyway I came away with my smog certificate (which is quite 
a relief as those of you in California will agree), however the car 
doesn't run as well, particularly the idle which almost seems to
miss abeat every now and then.  The idle speed had slowed 
down, so I increased that with the adjusting screw, and then 
started to play with the mixture screw. It seemed whether I 
increased the mixture or leaned it off, no change could be 
observed.  Now I don't know where I am?
Oh by the way I'm sure you now but I have a single Stromberg 
carb. and everything else is standard for the 1978 version. 
- I expect this sounds pathetic when I can't even set a single 
carb and I expect most of you have your twin SU's purring in 
balance.

I'm sorry to be so long-winded but any comments or help would 
be very much appreciated. eg. explanation of what has happened, 
effect of the different timing, also how to the set the carb with no 
special equipment.

                           Thanks,
                                                       Alan B.'



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