sounds like lifters, Mine will tick for a few when you first start it. But then goes away and only does it when its cold out..Summer its fine. All my OLD audi's did it to but they lasted longer, more like 10 minutes.
Dumb question but maybe low on oil? If it does it after its already running sounds like oil issue? Pump?
I also had that ticking noise on a 80 1.8S. Turned to be the valve operating levers and their hydraulic adjusters. Anyway, the problem is 99% in the cylinder head - might be valves, levers, springs, spring discs, or even camshafts. Or you might have an oil problem, as pointed before.
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