Since I was last on here I removed the diesel fuel tank and cleaned out what was a very dirty, black, slimy mess what some would call algae but actually it's not, as algae needs sunlight to grow. There was quite a lot of this microbic bug which thrives in the new low sulphur bio-diesel. I had to pressure wash the inside of the fuel tank using washing up liquid and dying it out thoroughly. I blew out the fuel pipes, cleaned the fuel filter housing and put in a new fuel filter. Initially when I proposed the idea of removing and cleaning out the fuel tank to local mechanic repair shops they acted as if they had no clue what I was talking about and did not want to take on the job of cleaning out the tank etc and most said the car was for the scrapyard and later (after the tank was cleaned) one mechanic admitted that they pretend they do not know what your talking about as they hate the job and it is easier and more profitable to replace a clutch. Since removing, washing and replacing the tank the car is now running like it should and the slow starting issues I had previously been experiencing are now gone. Has anyone else experienced this diesel bug or mechanics attitude. I hope this may help someone in the future.