Re: Checking coils and wiring

Posted by Bob M on December 07, 2006 at 07:11:39 from (151.190.254.108):

In Reply to: Checking coils and wiring posted by relane on December 07, 2006 at 06:39:08:

Relane - To check if the coil is getting power, remove the distributor cap and temporarily block open the breaker points (manually open the contacts then place a match flap, $1 bill or similar between ‘em).

Now turn on the ignition switch and test with either a voltmeter or low current test light. If everything is OK you will see battery voltage between BOTH coil primary terminals and a good ground.

If no voltage at either coil terminal the coil is not receiving voltage – look for a bad ignition switch or wiring to/from the switch.

If voltage is seen only at the coil's ignition switch (-) terminal but not at the distributor (+) terminal, the coil is bad (open circuit in the primary).

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Power for the ignition switch should be taken from the ammeter post NOT connected to the battery. It'll work connected directly to the ungrounded (-) battery terminal, but it will cause the ammeter to read incorrectly.

Hope this helps!

Replies:

• Re: Checking coils and wiring Allan In NE 07:17:49 12/07/06 (2)
  • Re: Checking coils and wiring Bob 08:19:41 12/07/06 (1)
    • Re: Checking coils and wiring Allan In NE 11:06:55 12/07/06 (0)

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