Thread: reading valve color for diagnosis (pic)
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Old 04-22-2017, 10:05 AM
scjeep4.7HO scjeep4.7HO is offline
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Join Date: Apr 2015
Location: Virginia
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Not sure how "clean" these usually run but a pretty good amount of build up. Either too rich, plug needed changed, poor compression (should have checked it before pulled apart) dirty air filter.
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