Deep Knock upon start, warm or cold (Intermittent)

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Deep Knock upon start, warm or cold (Intermittent)

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08-25-2007, 02:10 AM

kelsvile

Member

Join Date: Aug 2006

Location: Tucson

Posts: 9

Deep Knock upon start, warm or cold (Intermittent)

This is my first post and I need help; after I did my first oil chnge (used Castrol 5-30 Syn), I would get a valve
rattle upon start up randomly, next I changed from a Fram filter to BMW and it stopped temporarilly but, continued later. Now I just changed the oil again but this time I used Mobil 1, (5-30) and I get a hard knock at start intermittently. Should I go to a heavier oil? ('01, 4.4, 80k).

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