lronly

I have today conducted a small experemant: I have connected a pressure gauge to the fuel supply line to the head and it was reading a bit higher than 4 bar, then i clamped the return pipe coming out of the head and finally i clamped the supply line. then i turned the ignition switch off. The gauge was still showing 4 bar, bur shortly after it started loosing pressure.... very very slowly. This worries me as i am left with the impression that there might be a crack in the head, however when i started the engine, after the preesure had dropped to i bar, i got no white smoke and the engine ran perfectly well. Any ideas please??? Thanks

Hi again all my 3 cars have the factory fitted ecu, they are all flash type as one is an 02 one is an 03 and the other a 56.They all have the NNN000120 except the last one that has NNN500020. They were standard but i remaped them all the same way.... and i have a 51 110 that i also maped with the same map and i never get any smoke from that one and i must add that its the one that has worked hardest and done the most miles - 62k I am most certain that its unburnt fuel and it reminds me of a tdi out of timing or with a bent connecting rod. My worry is that i might have a leak of fuel from the head to the piston. I am not sure how i can find out this, and if so where exactly its coming from. Thanks

Hi did you find a remedy for this problem? I have 3 cars doing the same thing and i have also taken the head off on one of them and changed the injectors and seals and copper seals too all was fine but problem still there! Help please

Hi I've been looking at this old topic but i wondered whether any one has found a remedy for this problem as i have 3 vehicles suffering from this symptom! I have changed all the injectors and also taken off the head to see whether there was excessive wear on the bores.... eventhough this car has only done just over 30k I look forward to any reply Thanks