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My 2013 Grand Cherokee Jeep Limited CRD has a loud tappet noise when starting from cold, but then gets quieter when the engine warms up. The dealer said it was a common noise with the CRD and not to worry about it, but it is a loud noise heard over the diesel engine noise and sounds like a tappet noise. Any suggestions?
It is common for modern CRD engines to exhibit a tappet-like rattle when cold, they all seem to do it, and it appears to be the injectors. The first time I heard it was on a Toyota HiLux and I thought the engine was about to let go. Take it to a diesel mechanic and see if they can recalibrate the fuel flow when cold.
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