I know you have given us an update but backfiring at higher rpm and
throttle openings on my V8 was caused by too big a points gap.
PaulH.
Ryan Watson wrote:
>
> Hello Listfolk!
>
> Once again I seek the benefit of your collective experience and wisdom!
>
> My poor little B is backfiring up through the carb. Starts up OK and
> drives around, but when I try to give it some throttle and get up to speed
> it start spitting back at me. I can't get the revs up much past 2900 under
> load. This problem came on rather suddenly after having been driven to
> work on our first cold snowy day. Did OK in the morning, but not in the
> afternoon after sitting all day (and getting colder)
>
> What do you think?
> Carb and Choke seem OK, as does the points gap. (yes, my '79 B has
> points, go figure) I'm going to check the
> timing next today, assuming the problem doesn't go away.
> Are these the right things to check? Any other suggestions?
> Could it be the plug leads?
>
> Thank you in advance!
>
> Ryan (learning more about the MGB every day) Watson
> Denver, CO
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