i think its the polution pump i hear it on mine but i got under it and it
was not coming from motor.
arnold
----- Original Message -----
From: "Tanner & Beth Sammons" <etsammons@earthlink.net>
To: "DML" <dakota-truck@buffnet.net>
Sent: Thursday, April 26, 2001 8:30 PM
Subject: DML: Slight "Knocking" from 4.7 Bottom End
> I have been hearing a slight "knocking" sound coming from the bottom end
of
> my 4.7. I recently switched over to Mobil 1, with no improvement noticed
on
> the knocking issue. I am running 10W30, so I should be fine and I don't
> really want to bump up to 20w50 if I don't have to. Sound is really
> noticeable at startup until it reaches temp. Sound "softens" after I
reach
> normal operating temps, 185^ or so. I can only hear it at idle though,
> especially w/ cars or walls beside the Dak. I hold good oil pressure at
> idle and at rpms and the oil level is right on....
> Any other 4.7 owners have this happening?? Would like to find cure/reason
> for this!! Guess I may just have to get an aftermarket exhaust system to
> cover up the knocking 8^)
>
> TIA,
> Tanner
>
> PS. Still waiting on the tube to come back from the coaters, so no
> prices/performance figures yet... Hope to see it here tomorrow.
>
>
>
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