Hello guys, I bought a Seat Leon 1.8t last time and it ran great, 2 weeks later nothing is going on :/ I’m starting to despair because I’ve already broken my head and I’m not a bit further… To the problem: When the engine is slightly warm (1-2 km) it starts to vibrate more and more with increasing temperature. If it’s vibrating there is hardly any power (feeling 50 ps). If it’s then completely warm then it won’t go as soon as I get the gas ped. Then the car jerks without end. Then it also makes itself noticeable in the idle because it has then occasionally (probably ignition oscillations). In addition one hears an occasional banging of the exhaust and if I give in the idle the full throttle it sounds as if the exhaust gas is clogged or no exhaust gas pressure is present. -The fault spoke is empty -underpressure hoses tested by the turbo -air mass meter sometimes disconnects nevertheless the same symptoms. -Drosselklappe gereini gt + temp sensor combined valve replaced because the vacuum hose was off -Popoff replaced I have measured the Lambda value times with 4 gas measurement and the engine runs defensively to lean 1.3. The Vcds tester tells me but lambda should be against 1, because of that I switched off the Lambda control for couple of minutes without change. Do you have another idea? I would change now on suspicion the fuel filter and the candles because they also look not so good. 11th couldt, so slowly I really don’t know any more Thanks