Hello, have an Audi 80 b3 1.6 with 51kw. My problem is the following. The empty run is especially cold shortly after the start very bad (runs on 2-3 cylinders). The problem is not always the same extreme, but usually it goes out if you don’t keep it at mood. With a bit of gas it runs constantly on 3 cylinders. The 4th then comes up at some point. When giving gas and going from driving he jerks strongly. in thrust mode at lower speeds (under 2000) he jerks aúc h. It also sometimes goes out when uncoupled. no matter whether warm or cold. Also warm it sounds like in the empty run, as if sometimes it would not ignite a cylinder for a short time. I have already searched in the search and found only one topic in which similar problems were described. There was the problem of the Zynddistributor. It can’t be that with me. Just changed ignition distributors, ignition cables and spark plugs. Unfortunately unchanged. I noticed however that the spark plugs n are very black (see picture). Would point to a too fat mixture, wouldn’t it? Carburettor I think should be a 2E-E. Thank you very much! Lg Malte