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COULD YOU PLEASE TELL ME WHAT IS CAUSING A SPARK PLUG NOT TO FIRE?

Tiny
GMAECHILDS
  • MEMBER
  • 2000 HYUNDAI ACCENT
  • 90,000 MILES
MY CAR WAS TESTED AT A AUTO STORE AND I WAS TOLD THAT SPARK PLUG ONE WAS NOT FIRING AT ALL AND NUMBER THREE WAS MIS FIRING.

WHAT DO YOU THINK COULD BE THE PROBLEM?

THANKS SO MUCH FOR YOUR HELP,

A GRAND MOTHER.







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Sunday, August 19th, 2012 AT 12:36 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Parts stores are not shops. The code indicates a missfire for number 3 cylinder.

It could be a plug, wire, coil, injector, vacuum leak or no compression. Have it checked at a shop to confirm the failure.

Roy
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Sunday, August 19th, 2012 AT 12:44 AM
Tiny
DOCDTC
  • MECHANIC
  • 53 POSTS
Most likely culprit is a faulty coil on that cylinder- switch the coilpack with one of the others, clear codes by disconnecting battery for 2 minutes and run it to where you had the codes pulled at. If the miss has moved, you need a coil. Wires do fail, but is usually not the case with Hyundai
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Tuesday, August 21st, 2012 AT 12:06 AM

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