The '73-80 models of B have the anti-run on valve. When you (not you Skye!)
turn off the engine, you should hear an audible click from the valve
kicking-in. It is located on the passenger side of engine compartment by the
carbon cannister. My '76 had a short period where it would diesel a bit and
it went away as quickly and mysteriously as it appeared. I just shrugged my
shoulders and didn't try to figure it out!
Giving money and power to government is like giving whiskey and car keys
to teenage boys. -(PJ O'Rourke)
Steve Conley
Marysville, WA USA
'76 MGB Roadster
GHN5UG393585G
mailto:swconley@foxinternet.net
MGB Online = http://web3.foxinternet.net/swconley
-----Original Message-----
From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On
Behalf Of Skye Poier
Sent: Tuesday, November 09, 1999 1:41 PM
To: Tab Julius
Cc: MG Nuts
Subject: Re: What causes "shutoff shudder"?
Word on the street is that Tab Julius said:
> Turning off my ignition, my 78B's engine will often give me a few shudders
> before it decides to shut off for good. This is an effect I remember
> fondly from other older manual, probably non-fuel-injected cars (most
> notably my long-gone yellow 72 beetle). Releasing the clutch (to a gear)
> causes it to shut off quicker (okay, stall).
The common term for this is "deiseling" or "run-on". The engine is hot
enough
to continue to ignite air/fuel even though there is no spark. I
could be wrong, but I think your 78 should have an anti-runon valve..
the gulp valve?.. I don't know a lot about the emissions systems on
later cars.
Skye
--
1966 MGB - GHN3L Safety Fast! __,__\__
The MGB Experience http://www.mgb.bc.ca/ (_o____o_)
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