Hi all we are currently on holiday and driving back from the beach the other engine made a bang and lost power top speed about 30mph. Looking under the bonnet the dipstick has blown out and some oil has splattered out. It seems be be making a strange noise but runs smoothly. No warning lights on The dash or black smoke. We are stuck away and have called the AA but any advice would be great. Thanks in advance

Intercooler hoses...?? Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
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Thanks Pete I will have a look

If the dipstick 'blew out' you could also have an issue with the oil separator / breather, this could add to your woes
Sticking turbo vanes / turbo actuator failure also comes to mind, although the 'bang' and smooth running is puzzling, but if max power gets you 30mph as in Haylands post - not enough air getting in or exhaust gases can't get out. These faults could allow smooth running at idle, but not once you apply throttle.

All I can think of at the mo, would love to know eventual outcome when fault found.

Random thought - was anything on the road thrown up into the engine bay, causing damage somewhere?

Quote:

If the dipstick 'blew out' you could also have an issue with the oil separator / breather

+1  .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

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Thanks all for your advice. The AA has not yet arrived but if they are unable to fix it, I will get it recovered to Devon 4x4 as they aren’t that far away. As far as I know nothing flew up into the engine bay.

Although the engine is running smoothly it sounds like there is a hole in the exhaust but there isn’t.

Turns out the inlet manifold has split. £1244 to fix

Piggin hell.... time for a visit to the breakers....

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport