I have a audi a3 2000 w reg 1.9tdi the problem is its hard to start in the morning when i get it started it runs perfect then if i try to start it hot the problem is the same takes a few goes to fire up . the glow plugs have been changed was also told to disconnect the coolent temp sensor to make the car think it was cold this didn't work please help.

I think the problem is the injector pump ,this isnt common rail as yet for this age vehicle and when its starting its not throwing the auto start mechanism into play which makes it over inject fuel ,remember the old transit with the inline injector pump,lift bonnet pull throttle and push button in ,then it would go first time .well its the smae thing buts done electricaly ,only solution is to put car into a bosch injection specialist and have the pump overhauled ,lots of cash though,or use a can of brake and clutch cleaner --- and thin pipe into teh air intake and spray some of the cleaner into the air intake ,brake and clutch isnt as harsh as easy start andf their is a nozzle on the can so the pipe pushes onto that ,just like the old perkins diesels in the transits in the 60s only it was a plunger on the dash in them days .