Only used to occur in the first two miles after a cold start, and was really loud. Now it has thankfully gone away. I got the car at 20k miles, 16 months old. iit happened with the oil Reg Vardy had serviced it with, and also with castrol Magnatec when I changed it. It disappeared shortly after I put in 5w-40 fully synthetic, but this could be a coincidence I suppose.
I put it down to a sticky hydraulic tapette which had then freed itself, but recently I finally got around to reading up on my engine - 1.6 16v - and have learned that it does not have hydraulic valve clearances, only the 2 litre does! So although it's only academic, does anyone have any ideas?
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