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, 08:15 PM   #12
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Originally Posted by FocusTi View Post
Wouldn't the fuel being injected right into the cylinder help keep the valves clean? If you are using good fuel that it.
DI engines have no fuel in the intake ports.
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