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Engine cranks but does not start?

Tiny
BLW336
  • MEMBER
  • 2002 FORD F-150
  • 4.2L
  • V6
  • 2WD
  • MANUAL
  • 129,200 MILES
Hello, I have recently acquired the truck listed above that has been sitting for 5 years. I have drained and replaced all the old fluids. The vehicle currently will crank but will not start. The fuel pump kicks on as soon as you turn the key. We have tried spraying starter fluid in the intake, and it will still not start. We have checked the coil pack with a voltmeter, and it has around 5.3- 6.03 on each one. I am not sure what could be the issue. I will be replacing the plug wires tomorrow. I appreciate any information that I can get, thank you!
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Saturday, September 2nd, 2023 AT 10:39 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,375 POSTS
Hi,

If it refuses to start with starting fluid, chances are there is no spark making it to the spark plugs. I need you to check that first.

Here is a link that explains how it's done:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

Also, if you have a live data scan tool, check to see if there is an RPM signal when you crank the engine. If there isn't, my first suspect is the crankshaft position sensor.

Take a look at this link and let me know if anything mirrors what you've experienced:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let me know.

Joe
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Sunday, September 3rd, 2023 AT 9:41 PM

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