The quick fix for excessive hydrocarbons is to open the valve clearances (to
as much as 25 thou. will keep the engine running, just very noisily) to
allow a more complete burn before the exhaust valve opens.
Lawrie
British Sportscar Center
----- Original Message -----
From: Steve Conley <swconley@foxinternet.net>
To: <Thecarguru@aol.com>; MG List <mgs@autox.team.net>
Sent: Saturday, July 01, 2000 11:00 AM
Subject: 76 MGB Fails Breathalyzer
> Listers-
> My '76 MGB failed the HC (hydrocarbon) portion of the WA emissions test.
> It's equipped with the stock Z-S and I have the air pump removed, but the
> rest of the emissions stuff is on. The pump still works, just not very
> well. It blew a 647 with a 600 required to pass. This was at idle,
passed
> OK revved up.
>
> Any suggestions on tweaks that might help me pass? Would the air pump
such
> as it is help the HC number?
>
> TIA
>
> Steve Conley
> Marysville, WA USA
> '76 MGB Roadster
> swconley@foxinternet.net
> MGB Online: http://web3.foxinternet.net/swconley
>
>
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