Engine cranks, but no fire

1987 FORD F-150
100,000 MILES • 5.0L • V8 • 2WD • AUTOMATIC
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WTRIGGER
  • MEMBER
  • 2 POSTS
Replaced:

Ignition Switch
Neutral Safety Switch
Distributor (Complete)
Ignition Coil
Feb 10, 2022 at 2:09 AM
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KASEKENNY
  • Experienced Mechanic
  • 18,907 POSTS
Just to confirm, do you have a TFI ignition system? This is most common but there is a chance you have the DuraSpark.

However, I am going to provide the info assuming you the thin film ignition so let me know if you don't.

Based on the fact that you replaced almost everything, I understand the issue.

However, we need to act like you have not replaced any parts at this point as we could just have a faulty new part, so I am attaching the info on checking the coil.

Basically, let's measure the resistance of the current coil and make sure it is less than 7k ohms.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

I am attaching this test and the rest for us to run through on this issue.

I fully expect we will find a wiring issue or one of the replacement parts is faulty.

So, let's start at the beginning with this test and go from there.

Thanks
Feb 11, 2022 at 6:30 AM
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WTRIGGER
  • MEMBER
  • 2 POSTS
Thanks for the information... In the process of executing the recommended Test. I'll let you know any progress as it unfolds. Thanks for the help and quick response.
Feb 11, 2022 at 11:18 PM
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KASEKENNY
  • Experienced Mechanic
  • 18,907 POSTS
You are welcome. Thanks for the update. Yes, please let us know how it turns out as I am curious. Thanks
Feb 12, 2022 at 11:53 AM
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