After replacing spark plugs car will not start and still has misfire sound

Tiny
IRMA RIVERA FERNANDEZ
  • MEMBER
  • 2003 KIA SORENTO
  • 107,000 MILES
The spark plugs were changed according to the firing sequence and the truck doesn’t start. It still sounds like a misfire. What could it be?
Tuesday, April 16th, 2019 AT 4:58 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This could be a problem with your vehicle's Crankshaft Position Sensor (CKP). Your vehicle uses the CKP to tell the rotational speed of the crankshaft for rpm information and misfire monitor. If the Power-train Control Module (PCM) is not getting a signal from the CKP the engine will not start. I have included a few links down below for you to go to:

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

I have also included information specific to your vehicle in the diagrams down below. Please go through these guides and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros
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Tuesday, April 16th, 2019 AT 5:09 PM

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