I recently adjusted the carbs to richer and I finaly have no backfires
anymore (especially in wintertime it was worse).
Alos the engine seems to have more pull as well.
Cheers,
Hans
----- Original Message -----
From: "Douglas Gaither" <dbgaither@sbcglobal.net>
To: "mg list" <mgs@Autox.Team.Net>
Sent: Friday, December 10, 2004 6:06 AM
Subject: Backfire problem
>I am currently driving my father's '73B. It was not quite warming up so I
>installed a 195 degree thermostat. Everything was cozy. After about a
>week, I started experiencing backfires. It occurs after the engine is
>warmed up and under moderate throttle between 2500 and 3000 RPM. I did
>some research on the list archives and found several comments that
>backfires are caused by too lean of a fuel mixture. I noticed that the
>rear carb damper continually loosens due to vibrations. Thinking this
>could be the culprit, I filled it up with oil and tightened. After the
>engine warmed up again, backfires again occur. I pull over and check the
>dampers and it is fine, but it looks though the radiator was seeping a bit.
>I also noticed that the backfires totally toasted the foam air cleaners!
>
> Could my installation of the high temp thermostat caused my backfire
> problems?
> What would you suggest for me to try to remedy this problem?
>
> I know I could just try purchasing a lower temp thermostat and see what
> happens, but I wanted to consult the list first.
>
> Doug
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