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Author timing chain rattle on start up!
chris.garton1
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Registered: 3rd Feb 13
User status: Offline
   30th Sep 13 at 20:10   View User's Profile U2U Member Reply With Quote

My mate's Corsa c timing chain rattles when u start it up but then goes quiete. It losing its oil pressure. But then u can start it up 5 mins later and it's fine but if u leave it over night it will do it!But it had aoil pressure switch about a year ago.and he had a tensioner On the chain reasentley but it ain't fixed. Has anyone got any idea thanks!
RCorsa
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Registered: 15th Sep 13
Location: West Midlands
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1st Oct 13 at 09:40   View User's Profile U2U Member Reply With Quote

What engine is it? Is he certain it's the timing chain? If the oil pressure is low then the hydraulic lifters will not be pressurised enough and will rattle.
chris.garton1
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Registered: 3rd Feb 13
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2nd Oct 13 at 23:20   View User's Profile U2U Member Reply With Quote

It's a 1.0 3 pot. The oil light is on when u first start it up but then u can shut it of then it's starts fine again then but u leave over night and it will do it again. Would u suggest a new switch?
RCorsa
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Registered: 15th Sep 13
Location: West Midlands
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4th Oct 13 at 16:46   View User's Profile U2U Member Reply With Quote

Ok if the car is losing oil pressure then the oil pump is on its way out. The evidence is that the rattling noise is most likely the hydraulic lifters and not the chain. If it were the chain it would rattle all the time, the fact it stops rattling means the hydraulic lifters are filling up with oil and working as they should. If they are taking a long time to fill up with oil, it means the oil pressure is down, which means the oil pump could be on the way out...

[Edited on 04-10-2013 by RCorsa]
RCorsa
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Registered: 15th Sep 13
Location: West Midlands
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4th Oct 13 at 16:47   View User's Profile U2U Member Reply With Quote

Oh and make sure it's had some new oil and a new filter before doing anything drastic with the oil pump.
chris.garton1
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Registered: 3rd Feb 13
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4th Oct 13 at 21:35   View User's Profile U2U Member Reply With Quote

Fair enough thanks for your help!
RCorsa
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Registered: 15th Sep 13
Location: West Midlands
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5th Oct 13 at 13:40   View User's Profile U2U Member Reply With Quote

No worries.

 
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