Thread: 4.8is engine sludge, rough idle etc
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Old 11-05-2017, 02:19 PM
electricalserv x5 electricalserv x5 is offline
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What You think is a rough idle could be bad motor mounts.............it is shaking at cold start.I had the same on my 4.8is . changed out the engine mounts and it was gone.
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2006 4.8IS
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