Hello, after impulse generator, carburetor and finally also the starter have been replaced or cleaned the following problem occurs. With cold engine everything is normal and nothing lights up, but if I drive about 4-5 km then the oil pressure warning light goes on. This problem I have only since I have installed the starter off-u, again. I then made an oil change, new oil filter, sieve cleaned etc. and the problem was still there. Now I have an oil pressure switch it ordered and installed, unfortunately also no change. Now I drained the engine oil again and unscrewed the right engine cover (coupling side). It was really all disassembled now and blown through with compressed air. I then installed the oil pump and the oil overpressure valve from another engine and assembled everything again. Full of hope that is now finally quiet-puste cake, the problem was still there. If the oil pressure lamp and you make up the engine and so approx. 5 min. waits then the oil lamp is out again, but goes again when the engine temperature appears to reach a certain point again, possibly also oil pressure. Since I forgot to cover the oil channel that goes into the cylinder head after the starter was removed, I had now as last hope the suspicion that when the starter would blow dirt into the channel was blown out. So the cylinder head lid was cleared, camshaft removed, the Ö l-channel also blown through the channels of the camshaft itself. Everything assembled again, valves re-set and made a test drive. Unfortunately again after about 4 km the oil pressure lamp went on, then immediately turned off the engine and let cool down. Then again carefully stuccoed home there went the lamp again, a few minutes waited, started and the lamp remained out. Unfortunately I could not install any new parts, since you can not get them anymore, so had used genomme I’m finished with my Latin and I’d like to hear your opinions on it.