Engine cranks, but no fire

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

Ignition Switch
Neutral Safety Switch
Distributor (Complete)
Ignition Coil
Thursday, February 10th, 2022 AT 10:09 AM

3 Replies

Tiny
KASEKENNY
  • 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
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Friday, February 11th, 2022 AT 2:30 PM
Tiny
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.
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Saturday, February 12th, 2022 AT 7:18 AM
Tiny
KASEKENNY
  • 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
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Saturday, February 12th, 2022 AT 7:53 PM

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