Hi all,
I have a 2012 Altea 1.2 TSI CBZB that recently developed a misfire on cylinder 4 (P0304) above 3.5k rpm with subsequent cylinder disabling (P130A)
Replaced the coil module, HT leads, and spark plugs, and the issue remained.
Compression test recorded 200psi on all cylinders.
I assumed a faulty injector, so I removed all four, replacing the injectors on cylinders 3 and 4 with new ones and the seals on 1 and 2.
Removed the inlet manifold and renewed seals.
Now I have a rough idle with a continuing misfire on cylinder 4?
I have VCDS but am struggling to identify the appropriate measuring/loggong to help and how to interpret.
I'm considering it may be a wiring issue, but how do I diagnose?
Help is much appreciated.
DC
I have a 2012 Altea 1.2 TSI CBZB that recently developed a misfire on cylinder 4 (P0304) above 3.5k rpm with subsequent cylinder disabling (P130A)
Replaced the coil module, HT leads, and spark plugs, and the issue remained.
Compression test recorded 200psi on all cylinders.
I assumed a faulty injector, so I removed all four, replacing the injectors on cylinders 3 and 4 with new ones and the seals on 1 and 2.
Removed the inlet manifold and renewed seals.
Now I have a rough idle with a continuing misfire on cylinder 4?
I have VCDS but am struggling to identify the appropriate measuring/loggong to help and how to interpret.
I'm considering it may be a wiring issue, but how do I diagnose?
Help is much appreciated.
DC
