Vauxhall Astra G Diesel (1998 - 2004) - 01 1.7 Knocking noise from engine

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Sun 31 Jan 2010 18:35
01 1.7 Knocking noise from engine - dobbey1
Hi my asta van has a general knocking noise coming from the top end of the engine, i have checked the valve timing and checked camshafts for wear and checked tappets for correct gap and all is fine, the van drives fine with no loss of power, i have tried to read fault memory but unable to read memory with diag machine, i have heard a few rumours about the 2 ecu's in the engine bay causing certain engine running and knocking noises, ie fuel knock/pinking, can anyone advise me what these ecu' issues are or are there any known problems like this that anyone can advise me on, any help would be great.
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