The patient: a 1956 Bentley S1 - 6 cylinders inline.
Preliminary: This Bentley has a single distributor with 2 sets of points and
a 3 lobe shaft. One set of points fixed to the body of the distributor runs
3 cylinders ( 1, 2, & 3), and the second set of points runs cylinders 4 thru
6. The firing order is 1,4,2,6,3 & 5.
The problem: The car runs rough and has no power when all 6 cylinders are
hooked up to the distributor. It runs very smoothly on three cylinders, both
1,2 & 3, or 4,5 & 6. We have synchronized the timing by first setting the
points for 1,2, & 3, to 2 deg BTDC, then setting the 2nd set of points to
open at 2 deg BTDC. We have checked this with a timing light. The car will
start equally well on either set of cylinders, and either set of cylinders
will run equally well on either set of points.
BUT as soon as one or more of the cylinders from the second set is plugged
in, the car starts running rough and lacking in power.
We are guessing it is a tired coil, but would appreciate any insight.
HELP!
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