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Ford humming 4.6

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Anonymous

17y ago
Updated: 8/16/2019

Possibly the EGR system ... try squeezing the hose from the air intake (plastic thing that says SOHC on it) that goes to the rear of the engine (about 1" dia.). If it stops, the humming might be a sticky EGR valve.

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Wiki User

17y ago

What else can I help you with?