Ford Focus Forum, Ford Focus ST Forum - View Single Post - Keeping oil from coking up the intake valves on our DI engines
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Old 05-05-2013, 08:44 PM   #17
novus
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Quote:
Originally Posted by Aron@Injected View Post
Direct Injection engines are known for acumulating carbon on the intake valves.
Oh hell yeah. Look at Audi owners.
http://www.audizine.com/forum/showth...ad-for-RS4-4-2



And they were seeing it as low as 30k.
(Flap in the intake mani)
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