Succes!!!! I did a compressiontest and that was giving me my eureka.
Four cylinders gave a zero on my tester!!!!
The owner told me he had been working on his cylinderheads. He grinded all
of his valves. And now you get it, now my pushrods are too long.
But he is still a fool. He wants it low budget. My advice is to measure every
pushrod and order the right ones.
Now I loosened the nut and locked with another one. I checked the valve lash and it seems to be ok. It runs perfectly!!! But for how long???
The moment the engine was running, he got in and drove of. With a weak battery. At the trafficlights the engine stalls and stopped running. And then you have to push. Some time later he put in a new battery and the next thing happens.....the start won't engage!!! Ha,ha.
Sorry for my sarcasme, but that's not the way I want to build an engine.
So,guys, thanks for your help!!!