Rob, I bet your manifold is heating the gas, you need a shield between the
them like the spit has.
----- Original Message -----
From: David Massey <105671.471@compuserve.com>
To: fogbro1 <fogbro1@bellatlantic.net>
Cc: Triumph List <triumphs@autox.team.net>; Robert A. West
<RAWest69@sprynet.com>
Sent: Wednesday, March 22, 2000 10:28 AM
Subject: Re: TR6 backfiring question
>
> Message text written by fogbro1
> >"Robert A. West" wrote:
>
> > ed, i have a question about my car. i was wondering if i could bend your
> > ear about it. you seem very knowledgleible about the british line.
> >
> > it is a carb? question
> >
> > i backfire, thru my exhaust, only when the car is hot, or near
> > overheating. only then.
> >
> > like i have been sitting in traffic. then i get to the mall, lets say,
> > when i turn the car off. in about 2 seconds, i backfire.
> > i rebuilt the carbs. but i did not change the needle and seat. people
> > tell me that gas is leaking past the needle, into the hot carbon buildup
> > on the ehaust valve area, could this be true.
> >
> > it is a 76 tr6. zenith-stromberg cargs.
> >
> > if you cant, or dont want to help me , i understand.
> > can you maybe direct me to someone who might know?
> >
> > thanks ,
> >
> > rob
> <
>
> Rob,
>
> The Anti-Run-On system should prevent this. It is a system that includes
> the charcoal canister and a solenoid valve. This equipment is mounted on
> the right side of the radiator. The system functions like this:
>
> When the engine is shut off power is tuned on to the solenoid valve which
> diverts mainfold vacuum to the charcoal canister which is connected via a
> rubber hose to the float chambers in the carburettors. The vacuum applied
> to the float chambers will pull the petrol away from the jets and will
> effectively stop the flow of gasoline so that the engine is pumping pure
> air.
>
> After the engine stops and the oil pressure goes away the solenoid valve
is
> shut off. If this system were functioning properly you would not get the
> afterburn you are now getting.
>
> So my advice is to check out all the hose and electrical connections and
> also check for the presence of all the components associated with this
> system.
>
> Good Luck
>
> Dave
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