[Diy_efi] 928/749
Gregg Eshelman
g_alan_e
Tue Aug 21 06:45:29 UTC 2007
--- Bill Shaw <b.shaw at comcast.net> wrote:
> Well, a new coil helped some but didn't cure the
> problem. It will
> start and run now but is still dropping spark
> intermittently in a couple
> of cylinders. The pulses from the ignition module
> to fire the coil are
> nice and steady, don't miss a beat. Using the
> timing light on a couple
> of the plug wires shows erratic firing. It's
> starting to look like
> something in the distributor now, but I can't
> imagine what.
How many miles on the car? Could be worn bearings or
bushings in the distributor or a worn shaft or
possibly even the drive gear.
With the cap and rotor off, you shouldn't be able to
move the shaft up and down or rotate it more than a
tiny amount. Try wobbling it sideways too.
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