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thanks the work has been all been carried by a senior VW technician, albeit from his own garage during the evening,
All valves, guides and seals changed.


wiring has all been checked out by Auto electrician with diagnostics.

Hi ALL
Polo 1.2s 54k 2006
I've had engine management light on and the car spluttering.
I changed 3 x coil packs and plugs
then compression test revealed #3 down - very cracked burnt valve, had the valves replaced.
back together but still spluttering same - changed injector, but still same.
then ...