Having some strange running issues with the ed30 at the moment and I can't seem to get to the bottom of it.
It idles really rough, hunts quite a bit, doesn't boost and has cut out a couple of times. Still starts no problem.
I put a new PCV valve on it and its made no difference, also took the diverter valve out, checked and rebuilt it with no change. The bit thats really baffeling me now is the fact I had it scanned yesterday and its not thrown any fault codes up at all, even when I dissconnected the maf sensor while the car was running the day before it was scanned?!
Has anyone got a diagram of the whole PCV system? Am I right in thinking the pipe from the crankcase to the PCV valve has a non return valve in it? and if so, would that cause these sort of issues? As I changed the valve assembily itself but not the long plastic pipe to the block.
I was thinking of changing the fuel filter too just to make sure that isn't causing the problem, but then a blocked fuel filter wouldnt cause it to hunt surely?
Any help would be much appriciated.
A really confused GTI owner