Ok so went over to the garage to look at the golf because its not been running right, been hesitiant up through the revs and losts of exhaust popping. Now i've been aware of a code, the only engine code which is Camshaft Position (Hall) Sensor Sproradic Signal Otside Tolerance. So i'm thinking that distributor is needing tweeked. I marked it when it was removed for refurbishment and was replaced in the same position.
Anyway i'm adjusting the distributor whilst holding the revs at a fast idle, giving it the odd rev, to see if I can get it run better when I looked down and through a gap in my heat wrapped downpipe it was glowing red hot

!!
So i'm thinking no amount of distributor adjustment will cure that will it?? It can onll be a blockage surely?? Also causing the lumpy running. Now the cat that is on it is a genuine second hand replacement with its core all intact but the one I took off during the strip down was destroyed inside. I pulled some of it out the exhaust but there must be some still in there lodged somewhere yeah?? Nothing else that can really cause this problem I assume. No amount of overfueling etc should cause that when stationary? Just want to make sure it can be nothing else before I begin taking all apart.
Also, I had a code flash up for my OSF abs sensor, changed it now i'm getting a code for the NSF, upon erasing the code the ABS light goes out for a split second then returns. Should I just change that sensor too. I'm just concerned that if I change that it will then bring up a code for one of the rears or does it not work that way.
Sorry for the long speil just want some knowledgable advice so can get all this sorted for its mot.
Cheers
