Citroen Xsara Picasso knocking noise in engine

Car: Citroen Xsara Picasso
Variant: 1.6L Petrol
Model Year: 2005
Categories: Running Rough, Starting & Power Loss
Knocking noise in engine, there when idling and speeds up when driving/revving.
? Tappets
Is there another explanation.
How do I rectify the problem
Many thanks in anticipation of assistance.
S D
Posted: Jun 26, 2011 (13 years ago)
Depends on how heavy the knock is .Tappets can sound more like a clicking noise against a knock . You could try changing oil and filter , especially if not been done for a while .If you think it's a hydraulic tappet you can get an additive / cleaner like WYNNS which you could try .
Posted Jun 26, 2011 (13 years ago)

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