Hi Maurice
Not an expert - just my experience ...
I had similar trouble last year (poor acceleration but smooth coasting) and
checked everything (vacuum leak, timing, electrics, valves, carb settings,
etc.)
One piece of advice was to retard the ignition and see what happens. I did
this (only a tweak) ... and it fixed it. It meant that the timing mark on
the flywheel was left slightly out, but it now runs normally.
As I say, no expert, but it might be worth a try to see if it makes any
difference ...
Paul Leeks
Lancashire
100/6 BN4
------------------------------
Maurice Maxwell <maxandreb1 at yahoo.com> wrote:
> After replacing a head gasket and all of the other gaskets in the kit and
having
> the head rebuilt. I tuned the car and it drove around town just fine.
Steady
> idle, smooth power. However, on the highway, there was a serious misfiring
at
> about 4000 rpm when the throttle was fully depressed. When the gas pedal
was
> slightly released the smooth performance returned and the car continued to
> accelerate on to 5000 rpm. I find this to be strange and I need help
figuring
> this out. The car did this in 3rd, 3rd o.d., 4th, and 4th o.d. It did
> accelerate on to 5000 rpm in each gear when the pedal was not quite on the
> floor.
>
> Thanks for your help in advance,
>
> Max
> 1961 BT7 MkI
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