Quote:
Originally Posted by Bloke
A click or a knock? It is very typical to have injector rattle and that comes and goes. If you do a bearing it won't ever go away.
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this is The TSB and mine is doing as this discribes
3.0L Diesel Engine Tick, Rattle Or Knock Sound
OVERVIEW:
This bulletin involves verifying origin of sound and if necessary, replace #1 main bearings.
MODELS:
2006 - 2007
(LE)
300/300C Touring (International Markets)
2005 - 2007
(WH)
Grand Cherokee (International Markets)
2007
(WK)
Grand Cherokee
2006 - 2007
(XH)
Commander (International Markets)
SYMPTOM/CONDITION:
The vehicle operator may hear a sound that may be described as a tick, knock, rattle or
tap that occurs at idle up to approximately 1500 RPM. Noise generally occurs after 12,000
miles (22,242 km) or after an oil change.