how to check voltage to the coil - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 7 (permalink) Old May 10th, 14, 9:29 PM Thread Starter
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Chris
 
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how to check voltage to the coil

How do I check voltage to the HEI coil when the engine is running? remove the dust cover and go from the red wire to ground?

1967 Chevelle Oshawa Built Car
-427 .60 over, Lunati 60211 Roller cam
-Super T10 2.64
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post #2 of 7 (permalink) Old May 10th, 14, 11:09 PM
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Re: how to check voltage to the coil

You can go through the back of the connector with the red probe and clip the black one to ground.

Your just jealous because you can't hear the voices!

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1963 Plymouth Fury 440/Torqueflite
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post #3 of 7 (permalink) Old May 10th, 14, 11:43 PM Thread Starter
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Re: how to check voltage to the coil

Quote:
Originally Posted by oldcutlass View Post
You can go through the back of the connector with the red probe and clip the black one to ground.
I can't because I'm using these kind of spade connectors, That's why I asked if I can remove the dust cover to check

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-427 .60 over, Lunati 60211 Roller cam
-Super T10 2.64
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post #4 of 7 (permalink) Old May 10th, 14, 11:59 PM
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Eric
 
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Re: how to check voltage to the coil

How about making an extension with a pigtail.

Your just jealous because you can't hear the voices!

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post #5 of 7 (permalink) Old May 11th, 14, 2:02 AM
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Re: how to check voltage to the coil

Quote:
Originally Posted by 1967 chevelle View Post
That's why I asked if I can remove the dust cover to check
Sure, that'll work. You'll want to see nearly alternator voltage when the engine is running.

In other words, if the alternator is producing 14.2 volts, you'll be looking for 13+ volts at the distributor B+ connector.

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post #6 of 7 (permalink) Old May 11th, 14, 10:37 AM Thread Starter
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Chris
 
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Re: how to check voltage to the coil

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Originally Posted by Schurkey View Post
Sure, that'll work. You'll want to see nearly alternator voltage when the engine is running.

In other words, if the alternator is producing 14.2 volts, you'll be looking for 13+ volts at the distributor B+ connector.
how do I check the alternator voltage at the battery?

1967 Chevelle Oshawa Built Car
-427 .60 over, Lunati 60211 Roller cam
-Super T10 2.64
-Dana 60 3.54 Posi
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post #7 of 7 (permalink) Old May 14th, 14, 8:03 PM
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Re: how to check voltage to the coil

Quote:
Originally Posted by 1967 chevelle View Post
how do I check the alternator voltage at the battery?
Positive test lead from voltmeter on positive terminal of battery.

Negative test lead from voltmeter on negative terminal of battery.


You should see 13.8 - 14.2 volt ideally with the engine running. This is your charging voltage.

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