2.0 TDI (BKD Engine) Cold start problem...Getting frustrated now!

[andybon]

There wasn't any water in there, just full of diesel.

When it had it's scan they had it for 2 days, they scanned it when it was hot, then again when it was cold after it did it's juddering.

[andybon]

Tried it this morning with putting the ignition on and off a few times then starting it, still did it. Just tried it again but did it twice the amount of times and it was still the same.

Booked it in to a specialist at the weekend, just to see what they can find.

I ain't going to let this German win the war!

[doylebros]

My next move would be to clamp the return line on the filter housing to increase the system pressure, to eliminate the pump in the boot.
 
It's always difficult when your not seeing the whole picture,but for what it's worth the pumps are real common failure item!

http://www.ebay.co.uk/itm/AUDI-A3-1-9TDI-MEYLE-FUEL-PUMP-FEED-UNIT-1K0919050J-1K0919050G-1K0919050AB-/251359379661?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a862fc0cd

TPS price £ 175.69 full retail inc vat!


Then a compression test at the same time listening for an leakage on the injector seals!

So I will look forward to your next post on the repair!

[andybon]

Just got it back, it's rebooked in for a fortnights time (only time I can get it too them due to work) they suspect the vacuum pump and the Egr valve may have something to do with the fault, as these where both reading incorrectly on a scan. They replaced the fuel filter and checked that and they said they couldnt see a problem with that.

Just need to wait and see if the faults they found can sort it out.

[doylebros]

Disappointed to see your repairer couldn't find the fault - was their scan with VCDS?

The two items showing fault codes are easy to check if you have the tools - this is what happens when the inlet manifold flap/ ERG valve fail.

http://www.audi-sport.net/vb/a3-s3-sportback-8p-chassis/58985-help-p3103-v157-motor-intake-manifold-flap-egr-valve-how-do-i-solve-4.html

For my money the faults shown would only cause it to run rough.

Would be checking the supply to the tank fuel pump or replacing the pump!

This chap is having similar problems

http://www.briskoda.net/forums/topic/278438-octavia-20-tdi-16v-diesel-2006-fuel-starvation-or-worse-128000-miles/

[andybon]

one thing in the skoda post that intrests me is that he fuelled up at tesco. Thats the only place that I have filled up at since I got the car. Think I may try a simple task of trying another fuel station and go from there.

He scanned it with VCDS as it is a VW specialist I took it to, The only place I trust with my car.

[Trekmeister]

I run my 140 BKD on shell nitro, have no faults on VCDS but get hesitation on starting from cold, its as though the revs chug upto normal rpm and kick some blue smoke out of the exhaust. After thats its fine all day, no blue smoke, no start up hesitation until its started from cold again.

[doylebros]

one thing in the skoda post that intrests me is that he fuelled up at tesco. Thats the only place that I have filled up at since I got the car. Think I may try a simple task of trying another fuel station and go from there.

He scanned it with VCDS as it is a VW specialist I took it to, The only place I trust with my car.

You'll of used that tank of fuel since your problem started?

Do a bit digging you'll see that VW sell plenty pumps and associated relays which cause a range of problems before total failure.

[andybon]

Ive used tanks and tanks of the stuff!

[doylebros]

What would prove the point that it's fuel issue is to spray easy start(small quantity)in the air filter housings when the vehicle is clay cold when someone goes through the normal starting procedure.

It's not a good practice and shouldn't be over used but would confirm its fuel supply at starting.

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_221705_langId_-1_categoryId_255221

Up to you!

[andybon]

Think I will give it a go, After all it could be a relatively simple problem with a simple fix!

[andybon]

Update.

Started to use non-supermarket fuel which improved it a little. Had it back in the garage and they diagnosed the fuel pump in the tank. Will be going in on monday to be replaced and see how that goes.

[Andy]

hope this sorts the issue out once and for all

[andybon]

Touch wood it does, if not I've got another car in the pipeline, won't be staying with vw, be moving over to the blue oval!

[andybon]

Fuel pump seems to have sorted it, just got a slight hesitation on it from cold, but it doesn't shake rattle and bang!