Ignition oscillating? (?)

I switched on the highway yesterday (please don’t comment on this I hate myself anyway) and came instead in the 5th in the 3rd I of course immediately crossed the clutch again but… well, he was still in there for a short time and I lost almost 20kmh of speed. Now to the actual problem: Immediately after my mistake the car started to jerk and stutter, a friend in the car said that this was probably ignition failure. n nothing at all, it runs quietly and doesn’t sound abnormal (except for grinding if the clutch pedal is not kicked) Now I give it a bit of gas it swallows up as soon as the speed falls again, so it bubbling louder than usual, at least I imagine that. But when I was driving I have since this jerking, and today it has also stopped twice and was difficult to convince to jump again. Symptoms were thus as follows: Ignition drop-outs from about 4000 tours, dana he no longer accepted gas, the charging pressure indicator moves in GLD position but that is also the only thing that is doing. After that he only jumps extremely unwillingly. As soon as he is then he drives again but the ignition dropouts remain. What can it be? Please help me if you can, I despair slowly. P.S. Spark plugs and ignition cables exchange said a friend, but whom the candles would not ignite would he shake in the idling or? Oh yes, if I risk n am and I stop the engine normally (after 20 seconds or more, depending on the load), it starts immediately again. How does a fuelcut feel? Can there be something “shot” connected because of that? The car is EZ 90 and has a Lucas injection.