All Things Mk5 > How to Guides / Troubleshooting

Spark plug colour

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Ash_89:
Injectors came back from Aks tuning Saturday morning, Cylinder 2 wasn't flowing as good as the rest so needed to be replaced to get the best out of the set.
I also de-coked the valves over a few days replaced the fuel filter and spark plugs, now the car feels more smoother to drive and starts slightly better as well.
Looks like I will be repeating/checking the valves in the next 10k from now on.

pudding:
All good diligence there  :happy2:

I had a bad injector cause a dead misfire at 80K, so I just replaced all 4 because, well, why not.  It's a ball ache removing the intake manifold and once one lets go, the others will follow.

These engines totally rely on the injectors for mpg and smooth running, but the harsh nature of GDI kills them off, especially on short journeys.

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