Hello together, my friend has a problem with her i20 1.2l, EZ 2009, 60000km. For several weeks the engine control lamp flashes again and again. The car starts normal and after a few kilometers then, again for a few kilometers, the said problem occurs. Sometimes it does not occur at all, then again more regularly. Recently she has driven briefly in a row over 300km, that went without problems. We had on advice of a friendly car mechanic a cleaning additive i Now, unfortunately, the error is back again. Then I spoke to him just now and he meant, which is conclusive, that he can do nothing without permanent lighting. When the lamp finally lit permanently, it is to Hyundai and there they said that the 4th cylinder was defective. KVA of over 1000€. Among other things 8 outlet valves, 1x ZKD, valve shaft seal, control chain, engine oil, oil filter, 4x spark plug, cooling frost protection. In the work report: damage diagnosis, error memory read out, compression checked, (valve clamp 4th cylinder and irregular. misignition 4,cylinder wages I’ve been looking for forever on the internet. Unfortunately, there is quite often something about the valves (preferably for gas cars), outlet valves and that somewhere should be leaking and air is pulled, but also times that the cable of the Lambda probe was not fixed. Hyundai should be known with the valves. 1000€ are natural h a house number. Do you have any experience? Would suuuper be if someone confirmed the mistake or knew other causes and if you might get a part of Hyandai replaced after 5 1/2 years. Thank you and greetings to the round, Philipp