Welcome back:
As far as the rotor being seated, I have seen repairs where the rotor wasn't fully on the distributor shaft. As far s the coil, I would think it would have been noticed after it happened. Before you do anything else, remove the distributor cap and have a helper crank the engine to confirm the rotor is turning.
Listen, I dug up testing equipment from GM that explains how to check every component in the ignition system. It has both external coil and internal coil tests. Take a look through them and let me know if it helps. All the attached pictures are the actual steps.
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This section presents a systematic method of diagnosing and troubleshooting the High Energy Ignition system. The charts you will be using are different from the ones you have used before. They aren't "go - no go" decision trees or tables. Instead the new diagnosis and troubleshooting charts use pictures plus a few words to help you solve a problem, and symbols have replaced words.
Using the Charts
The charts are divided into three sections: step, sequence and result.
Pic 1
pic 2
A sequence could be checking the battery lead terminal on the distributor. Each sequence ends with a result and tells you the next step to go to. Work through each step of the diagnosis and trouble-shooting charts until the system is repaired.
Pic 3
To find where parts are located in the system just look at the parts locator chart:
Engine Cranks But Will Not Start Or Runs Rough Or Cuts Out
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Engine Cranks But Will Not Start (Continued)
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Engine Cranks But Will Not Start (Continued)
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Problem: Engine Cranks But Will Not Start Or Runs Rough Or Cuts Out (Separate Coil)
Problem: Engine Cranks But Will Not Start Or Runs Rough Or Cuts Out (Integral Coil)
Engine Cranks But Will Not Start Or Runs Rough (Separate Coil)
pic 7
Tools Required:
Engine Cranks But Will Not Start Or Runs Rough Or Cuts Out - Integral Coil
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Engine Cranks But Will Not Start (Continued)
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Engine Cranks But Will Not Start (Continued)
pic 10
Let me know if you have questions.
Take care,
Joe
Images (Click to make bigger)
Thursday, September 3rd, 2020 AT 10:14 AM