Quote:
Originally Posted by Nigelo
It's been on my mind too, especially since my car probably had a life a short journey, low octane fuel life before me - ripe for carbon build-up.
But until I start having issues, it'll be on the back burner. How many miles are on yours? I'm just over 40k.
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Cheap fuel will have NO impact upon this type of carbon build-up discussed in this thread - direct injection fires fuel right into the combustion chambers
This buildup at the intake valves is down to oil from the crank breather system (or any oil in the charge air pipes)