Whining/hissing noise on start up

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peter jones

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Mar 7, 2010
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Hello all
I have a 2003 dx Navara d22 with zd30 engine.
On cold start up there is a whining/hissing noise which becomes quieter once the engine has warmed up. Would anyone have any idea what causes this.Also my local mechanic checked the gaps between camshaft and shim on head yesterday.He found one gap twice the size of all others.Any advice on this would be very help full.

thanks
Peter
 

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