This sounds to me like it would be cause by lack of air not. I would
think that spark would not be a problem since you do not have it at the
same RPM. The same with fuel. But since the wind is changing
considerably inside the engine compartment maybe the airflow is somehow
reduced....
Just a thought.
On Mon, 16 Nov 1998 15:34:57 -0600, Dirk de Boer wrote:
>Here's a question for all of you:
>
>My 1966 MGB has a fresh engine. So far, I have put about 500 miles on
>it. When I rebuilt it I replaced the entire ignition system (plugs,
>wires, points, cap, rotor, condensor) and I put on a Lucas Sports coil
>and K&N air filters. When I take it up to 70 to 80 mph, I get a miss
>once in a while. It sounds sort of like a muffled sneeze, and I can also
>feel the car hold back when it happens. In every other gear at the same
>rpm's and in my garage at idle everything works fine of course. Timing,
>point gap and dwell are all on spec, and I get advance when I rev the
>engine. Points are and look new. So in the end, the engine works great.
>It's wonderful to drive away without leaving a blue cloud, and without
>the clutch slipping. Except for the miss in fourth at 70 to 80 mph,
>everything is perfect. Does anybody have any ideas about what could be
>causing this? Could it be the fuel pump cannot keep up with demand?
>
>Dirk de Boer
>1966 MGB snowbound till next Spring
>
>
--
Andrew Lundgren
lundgren@iname.com
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