Hello, I have the Audi 80 2.3E B4. Sometimes it happens that it stutters and no more gas takes on it. Then I press the button for full gas (just next to the gas train on the engine) and then it runs normal again for about 5 sec. And then the same thing again. When I give full gas, you hear it a little louder clacking on the top of the sink where Audi is standing on it. After a few minutes it runs again as if it had been nothing. Sometimes it also attracts a lot weaker than usual, but sounds normal. The workshop tested the following: -Zündkabel replaces -Intake system tested for false air -Exhaust diagnosis carried out – Cooler agent regulator replaced suction system and exhaust values have adapted. (Obviously the problem did not occur exactly during the test) What could be the cause? The VW respectively Audi were not able to fix the error. Would I really be happy about your tips.