When starting from cold the oil pressure light takes a few seconds (more than it should?) to go out. Until it does go out (indicating that the oil pressure is OK) the engine sounds like a bag of nails. The engine will then be OK all day long until the following morning. Done the usual of change the oil and filter, but no difference. Oil pressure relive valve seems OK (piston slides OK, spring is not broken) even fitted a pressure gauge to make sure there is pressure.
Needless to say I'm worried about damage to the engine on cold start-ups.
Any of you wonderful mechanics got any ideas as to what it might be? This problem did start after a relative long trip.
Mileage 72,000
2004 vintageAll help appreciated
ttfn....Alistair