I have a Citroen C5 (8000 Miles) Engine has only just developed an overidding Engine tapping noise ONLY after warm up, say 2 miles.Predominant on accelerating under load at low speed. Noise is lost when at speed. It is not there when revving in neutral.Noise is above the normal "Deisel" engine sound.Noise heard in driving and passenger positions. Any suggestions
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Engine details and year would have been nice. As it's some sort of HDi, then a cracked injector is possible if it's a regular "tappet" sort of noise.
An irregular rattle could be a front pulley; or a knock-knock-knock a DMF failing.
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