Octavia 1.9tdi cuts out when cold and wont rev

[regis motor's]

Hi all i have just joined this site, i need some assistance please
I have an Octavia 1.9tdi (BKC) 07 plate came to our work shop as non starter,

when you try to start car it shuts off after 5 seconds and has no responce to acclerator but will run on easy start when it gets warm it will start on the key and rev up with acclerator but cuts off some times even when warm.
its a very starnge problem we have tried every thing.
we found the the wrong turbo fitted so replaced it with a new one from skoda also have done all the below.

1. Maf sensor (http://shop.ebay.co.uk/?_nkw=maf+sensor) checked/ removed/swapped with same part no from working vehicle no change
2.Intercooler checked boost sensor replaced
3.Coolant temp sensor replaced
4.Boost control valve/solenoid on bulkhead replaced
5.Egr valve removed/ cleaned/replaced
6.Vacuum pipes checked/clear no holes splits
7.Vacuum sphere replaced
8.The turbo has been rebuilt and refitted(new oil feed pipe fitted)
9.Removed front pipe to eliminate blocked catalyst
10. ecu was sent off for testing.
11. replaced all fuel pumps.
12.checked timing
13.torked up injectors
14.checked injector wiring loom to ecu.

Any help would be greatly apprieciated

[boustie]

We had one recently cut out completely intermittantly and intermittantly wouldnt start at all.
We found jet washing the engine loom at the front nearside corner split, might be worth jet washing it to see if it affects it ?

[regis motor's]

We found the problem the cams had been tightened we replaced bolts and torqued them down car started on the bitten we also replaced all four injectors.