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  #1  
Old 08-18-2010, 01:58 PM
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Default Engine Knocking

Engine Knocking
OK I have a 2003 Dodge Ram 1500 with a 4.7 engine and recently I notice a slight knocking sound only during start up?? Of course I checked the oil level and have not change the fuel quality either. As soon as the engine worms up the knocking stops? Any ideas?

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Old 08-18-2010, 03:00 PM
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Is it knocking or tapping? Could be just a cold engine building up oil pressure.
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Old 08-18-2010, 03:14 PM
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I was thinking noisey injecter...........That would be constant though?..........Lifter? Is it reall noisey or subtle?
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Old 08-19-2010, 02:53 PM
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I agree with RootBeer its probably just warming up. Honda motors are famous for it, and most of those last over 200K miles. Long as it isn't abnormally loud... that would likely indicate a more serious problem.
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Old 08-19-2010, 07:46 PM
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It could be a forged piston noise . Once the pistons get some heat in them , they quiet up . I believe the 4.7's do have forged pistons in them . Randy would have to confirm that . I did have a oil pan off one years ago and for some reason that sticks with me .
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Old 08-24-2010, 09:37 PM
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mine ticks during start up,has since new!
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Old 08-24-2010, 09:38 PM
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Mine ticks during cold start up too. But as soon as it's warmed up, the ticking is gone.
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