Member Since: 25 Apr 2018
Location: Plymouth
Posts: 3
Turbo knocking???
Hi guys, advice please ......
2007 D3, has just started to make a knocking noise on firm acceleration. It appears that the knocking is only when the turbo would be active, on revving and gentle acceleration the engine is quiet and smooth. I haven't noticed any loss of power and there is no smoke etc......
Am i in trouble here?? is it likely to be a hose or something (fingers crossed) ?????
the turbo contains no parts with enough weight to cause much of a knock, how loud and can you feel it as well?Pete
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28th Apr 2018 7:44 pm
Griffy
Member Since: 25 Apr 2018
Location: Plymouth
Posts: 3
No I cant feel anything through the vehicle or steering. It doesn't sound metallic or anything. The best think I can liken it to is an 'air' noise like you get from helicopter rotor blades, like a:
dough-dough-dough-dough
but its only on what i imagine to be turbo use?
28th Apr 2018 8:12 pm
bournetransport
Member Since: 17 Apr 2016
Location: Bournemouth
Posts: 7
Check boost pressure on live data using diagnostic tool.
Over boost will cause an engine knock (diesel knock / pink).
Check oil pressure, not enough will cause a big end knock under load.
Hope this helps.
28th Apr 2018 8:23 pm
Griffy
Member Since: 25 Apr 2018
Location: Plymouth
Posts: 3
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