D5254T (to 2002, Audi) Default Help! V70 Tdi - intermittent starting issue driving

[Hollowave101]

Dear all helpful peoples

My 98 manual V70 2.5 tdi is causing me some grief for the first time in its 215k miles...

-at times when key is turned the engine turns over and nothing happens
-at times it catches and stutters
-at times it starts fine

Once going its absolutely sweet as a nut. Facts:

-there are no fault codes showing
-there was some air in the system but 2 mechanics think they got it out
-fuel filter is properly seated and connected
-the last service was 1400 miles ago
-diesel pump belt is due a change
-I cant work out whether its temperature related. I think not - its not started cold and not started once warm at times.

Can you help?

Many thanks

Mods - sorry this is also in the V70/850 area - but I figured different people in both areas could help?

[artiedtke]

Originally Posted by Hollowave101

-diesel pump belt is due a change

I suspect the belt has stretched that far that the pump timing is slightly out.

Hard starting is a very common characteristic of pump timing being adrift on these cars.

[Hollowave101]

Pump being redone as we speak!

[green van man]

Cheak the belt tensioner as well, I had one wear badly which affected pump timeing.
Paul.