My #1 cylander is getting no fire. Ive changed the spark plug and ignition coil. What should I check next

Tiny
AFHANKS
  • MEMBER
  • 2001 VOLKSWAGEN JETTA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90 MILES
6 monthes ago I changed all 4 ignition coils. It started running rough again. I checked the coils first. 2, 3, 4 are fine. #1 I pulled the connector off the coil and no change to the idle. I changed the plug and coil, no change. What should I check next?
Saturday, March 3rd, 2012 AT 7:13 PM

2 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Sounds like ther's no pulse to fire coil.
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Saturday, March 3rd, 2012 AT 8:34 PM
Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
You could have an injector problem, so check if you have any
injector codes stored. The ignition coil wires in the coil wiring
harness can become brittle over time due to heat. Which can cause
the wires to break or short to ground/together. Check the wiring
harness for broken wires / insulation.
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Saturday, March 3rd, 2012 AT 9:22 PM

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