11-25-2006, 01:32 PM
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Join Date: May 2004
Location: The hills of No. Calif.
Posts: 9,332
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Because of the frequent short trips the truck operates in warm-up mode for much of the time, not really getting up to proper operating temp for very long. This would be why you tend to see a lot of carbon build-up. I would add a good fuel system/injector cleaner such as Seafoam on a fairly regular basis, and manually clean the throttle body, IAC and Mass Air sensor, perhaps as often as every few months. If EGR-equipped, you should clean that every once in a while as well. You may need more frequent tune-ups and oil changes than specified, as your driving habits come under the heading of Severe Duty.
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Last edited by TigerDan : 11-25-2006 at 09:54 PM.
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