> My 74 TR6 stumble problem is solved. I have been chasing this for a long
> time.
>
> the problem was related to my Crane XR-700 Ignition
> system. Under the distributor cap is the optical sensor block and it is
> held in place by a metal bracket. This bracket is kind of tall because
> it is designed to allow the optical block to be mounted in various ways
> depending on what kind of car you have.
>
> Anyway, the spark was jumping from the rotor to the top of this bracket
> as it passed overhead.
And to think people install those things because they make the car more
"reliable" !
Randall
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