Discussion:
#3 cylinder missfire

Our GLC 070vx starts and runs fine until it gets hot. When hot #3 cylinder cuts out. Has new coil, plug wires, and spark plugs. I do not think it is an injector as I have introduced carb and choke cleaner to just that cylinder and the miss does not go away. Am I looking at a lifter bleeding off? Any ideas?
  • Posted 14 Feb 2024 06:07
  • By Jon_Nemke
  • joined 14 Feb'24 - 5 messages
  • Wisconsin, United States
Showing items 1 - 4 of 4 results.
I am starting to think along the lines of valve issues. I would think if the intake valve was sticking open you would get a backfire? I am going to pull the head as I have a new one on the shelf and I will replace the lifters. I am not getting any lifter noise but anything is possible.
  • Posted 14 Feb 2024 23:12
  • By Jon_Nemke
  • joined 14 Feb'24 - 5 messages
  • Wisconsin, United States
It does not have a cap and rotor.
  • Posted 14 Feb 2024 23:10
  • By Jon_Nemke
  • joined 14 Feb'24 - 5 messages
  • Wisconsin, United States
No new cap and rotor? Stupid question, is the cap aftermarket? Had problems with that in the past. Just finished a repair #5 lifter fail, but my engine also had top end noise.
  • Posted 14 Feb 2024 19:46
  • By Lucky11_H
  • joined 14 Feb'24 - 4 messages
  • Kentucky, United States
Lucky66h
Sticking inlet valve possibly?
  • Posted 14 Feb 2024 19:40
  • By andrew_k
  • joined 17 Mar'07 - 325 messages
  • England, United Kingdom

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