Does it right itself after a while? Ignition component heating up with heat
soak and breaking down? If the tach (assuming electronic) is flickering at
the same time it is an ignition LT problem. Try clipping a timing light on
and positioning it where you can see it while driving. Does it get erratic
at the same time? If so, and the tach is steady, it is an ignition HT
problem. Does pulling out the choke clear it? If so, and the previous
tests were OK, could be a fuel problem.
PaulH.
----- Original Message -----
From: wcameyer <wcameyer@email.msn.com>
To: The MG List <mgs@autox.team.net>
Sent: Tuesday, June 27, 2000 6:50 PM
Subject: Hesitating/backfiring
> Hello, List:
> I need help. Twice recently I've driven 10-15 miles, my '77 B rdstr
running
> beautifully at speeds up to 85. Then it is parked for 1/2 to a full hour.
> On the way back, after a while, it will hesitate, buck like H---, and
> possibly backfire between 60 & 70. On Father's Day, it ran like a top for
> 200 miles at speeds up to 90. Standard engine, Piper 270 cam, Weber
> downdraft.
> What's going on here? What should I check?
>
> Bill
>
>
>
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