Thread: 603 motor - why louder than 617?
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Old 12-05-2005, 11:55 AM
Hatterasguy's Avatar
Hatterasguy Hatterasguy is offline
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Join Date: Nov 2002
Location: Milford, CT
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A properly tuned 603 should be quiter at idle then a 617. Your injectors probably need to be checked.
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