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Failed tune up, misfiring

Tiny
BEJG
  • MEMBER
  • 2014 VOLKSWAGEN JETTA
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
Changed spark plugs continued to miss, not firing all four. Took those back got different kind. Changed the wires same problem. Changed the module since had 125,000 miles on it. Still missing, not firing a four cylinders. Car cannot go any faster then 35 mph. Sitting in the driveway since last weekend. We have tuned it up before and no problems.
Thanks ahead of time.
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Thursday, October 4th, 2018 AT 11:08 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like you have a head gasket blown between two cylinders but to confirm lets do a compression test.

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

and

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please run down this guide and report back.

Cheers, Ken
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Saturday, October 6th, 2018 AT 4:23 PM
Tiny
BEJG
  • MEMBER
  • 2 POSTS
Was worried when I read your reply. Decided I better research "Yelp" in my area fir a reasonable VW mechanic. Talked to him on the phone. Thought at first could be a vacuum leak but actually after he was able to look at the car turns out it is two bad fuel injectors causing the problem. He did not charge for the diagnostic. Still expensive fix. Thanks anyways, appreciate you taking the time to reply.
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Tuesday, October 9th, 2018 AT 5:37 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.

Cheers, Ken
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Wednesday, October 10th, 2018 AT 2:32 PM

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