[patrickt]

Originally Posted by 1blackbb66

David,
An interesting thought but I have a MSD box on my F150 and have never experience a change in the timing due to the multi-strike capabilities of the box. The light should fire on the first inpulse it senses from the pick up coil and ignore all other impulses and I'm not sure it could because we are talking miliseconds between current flow.

From MSD Tech Support:

When it appears that the timing is “jumping all over the place” is the engine responding accordingly? If not, it’s possible the timing light was picking up interference from the CD ignition.

Make sure you are NOT using a dial-back or digital timing light. These tend to work TOO well and will pick up the multi-spark showing an incorrect or scattered reading. We recommend using a simple “plane Jane” inductive pick-up timing light.

http://www.msdignition.com/forum/sho...t=timing+light




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