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Old 02-28-2010, 08:34 AM   #4 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
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There was a known problem with intake manifold gaskets not sealing properly. Look into this (to pay someone to do it isn't cheap but a kit is only about $150 as I recall); if nothing else, pull spark plugs to see if any two are fouling from adjacent cylinders. The 318/360 isn't known for economy, but extra long service life.
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