Car will not start

2006 ACURA MDX
125,000 MILES
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CNCSEAN75
  • MEMBER
  • 1 POST
Had an problem with a spark plug coming loose which ended up destroying coil pack got misfire on 3 and 5. replaced spark plugs and coil packs car turns over but won't start.
Nov 2, 2019 at 12:07 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Welcome to 2CarPros.

First, were all coils replaced? If so, is there any chance you mixed up the wiring to each coil? Let me know that first.

Next, have you checked to see if there is spark to the plugs? Does the engine fire at all indicating there may be spark to a couple cylinders?

Here is a link showing how to check for ignition spark:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If there is no spark and nothing was mixed up, next I need you to confirm ground to the coil packs (which is a common ground) was damaged. To do this, disconnect one coil at a time and check for continuity between a known good ground and the center pin in the connector. See the attached picture.

Here are a couple links you may find helpful. You will need an ohm meter/multi meter to test for continuity.

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

https://www.2carpros.com/articles/how-to-check-wiring


Do this and let me know what you find.

Take care,
Joe
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Nov 3, 2019 at 6:20 PM