Don't know the cause, it almost sounds like a lifter tick. Follows engine rpm especially at lower RPM it is more noticeable. Cannot hear it coming from the valve covers on either side. Replaced the fuel pressure regulator on the fuel rail, pcv valve etc. Just hoping someone has seen this before. Happens at idle when in gear but not when in park or neutral. Strange.
03 Expedition clicking noise
- Thread starter wn007
- Start date
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