View Single Post
911pcars 911pcars is offline
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,569
Originally Posted by Quickstep192 View Post
Well now the plot thickens. How can it work if it reads open?
About 10K voltage will bridge a gap wherever it exists in the secondary system, a gap in the rotor, a conductor open circuit in a spark plug wire, or the spark plug gap. For the long term, during low load driving, it isn't healthy for the ignition coil to produce excessive firing voltage. It can, over time, break down the insulation properties of the conductors along the secondary voltage circuit.

Does the ignition coil get hot to the touch after a drive?

In addition, a high voltage spark gap will tend to increase over time. Could eventually cause a misfire under load, equivalent to an excessively large spark plug gap.

Old 09-16-2020, 07:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)