Please help!! Cold starting issue.

[Passatsport]

I have a 2008 Passat 2.0 tdi Sport, it's a BMP 16v engine.
When the engine is cold it is really difficult to start, often I'll try 3 or 4 times turning the engine until the oil pressure warning light comes on before she'll start, once warm there is no issue. I changed the glow plugs and fitted NGK CZ104, replaced the coolant temperature sensor, replaced the fuel filter, bought a code reader on eBay which found no errors, no warning lights on the dash. The car drives well although a bit lumpy at times when sitting at lights, I'm at a loss as to what else to replace, relays? The battery is fine also, so that's not the issue, any ideas???

[Passatsport]

Hi s2racer

I don't know tbh, is it just a matter of taking one out and earthing it and turning on ignition to check?
Very rarely she will start first attempt though.

[Passatsport]

Hi shtu

Glow plugs are new NGK CZ104, replaced them a few weeks ago when problem started.

[Passatsport]

Code reader was as info below, I created a fault by disconnecting the MAF plug and it found it straight away, easy one I suppose, but at least I know it works.

Konnwei KW808 Car CAN OBD2 Diagnostic Scanner Code Reader Tool VW Audi VS VAG405.

I guess it's back to the VW dealer with her.

[Passatsport]

Hi s2racer

No blown fuses, I'll borrow a multimeter from work and check them, I have a cc also and was going to swap the relays over, if they're compatible and more importantly if I can find them!

[Passatsport]

Hi Dr G

Yeah it stinks when running.

[Passatsport]

Ok chaps I'm kinda realising that these plugs are not getting any power whatsoever, I did notice last night when checking the fuse box in the engine compartment that one of the cable connections coming out of the box, 50 amp, was quite corroded. I took it off and cleaned it a bit and to my utter surprise she started first push of the key this morning, so i'll give it a good clean with light sand paper later and add some grease before reconnecting.
Does this sound like a plan??

[Passatsport]

Thanks for help guys, I will let you know how it goes in a few days.

[Passatsport]

Hi Dr G

Thanks for that info, I will def check with my local dealer regarding this 'recall' as she does indeed smell very oily when running.

[Passatsport]

Will do Dr G, thanks.

[Passatsport]

Quick update -

I happened to check the glow plugs that I fitted and found that they were not exactly tight,
I tightened them as much as I dared, without a torque wrench, when I installed them, but I was
able to get another half turn on them tonight before the socket wrench stopped.
getting a torque wrench on ebay tonight to be sure that they are tightened correctly.

Checked with dealer regarding injector recall and was told that my car was not affected and that
there are no outstanding recalls for her.