What could cause a car not to start completely?

Tiny
MAIRIGA
  • MEMBER
  • 2003 FORD F-150
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 230,784 MILES
My car started mixing up. I changed the whole plugs and serviced the nozzles. After some days of usage it resumed mixing up again. The car suddenly stopped starting. The mechanics and automobile electricians queried: lack of fuel, starting sensor, fuel pump and then brain box. Until now no solution is reached. What else can I do?
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Friday, October 16th, 2020 AT 8:57 PM

1 Reply

Tiny
KASEKENNY1
  • EXPERT
We need to start with finding out what we have and what we don't in order to start the vehicle. You need spark, fuel, and compression. Here is a guide that helps with this:

https://youtu.be/dCjmRL3p4Cs

We need to start with checking fuel pressure. Here is a guide for that:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Then we need to find out if there is spark. We do that by pulling a plug and holding it against the engine and crank the engine to see if it sparks.

Lastly we need to check compression. Here is a guide for that:

https://www.2carpros.com/articles/how-to-test-engine-compression

Once we know the results of these items we will know what direction to go. Clearly we could guess at what is next but we need to find out where we stand with what we have and do not have and then we can determine next steps. Thanks
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Saturday, October 17th, 2020 AT 7:46 PM

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