Audi A3 Tdi bkd 2.0 problems

[Terry finch]

Hi guys I'm new on here but got a bit of a problem so hoping you can help

Ok Iv got a BKD 2.0 Tdi with head variant B It has rough cold starting and lots of white smoke , after 3 mins or so all clears and everything is fine apart from a little hunting while just ticking over I have full power and great economy .

I bought it knowing there was little problem with a suspected injector
It had already had anew injector
Turbo and cam belt ,

So Iv fully serviced it fuel filter and glow plugs have been done with lots of injector cleaner in the system as well .

Iv also had the timing checked. Had a full vagcom that came back with nothing wrong at all .
The injector seals have been done , the injector wiring loom has been done .

I'm changing the Rocker /cam cover as it could possible a PCV valve but not sure ..

It's done 2000 miles in two months with me with no change in the problem no loss of water or oil and no mixing .
Iv not touched the egr or asv yet

Do you guys have any ideas that could help ?
Thanks Terry

 

[Rideen]

The most obvious one mate - porous cylinder head. The coolant gets into cylinders and evaporates when you start the car, thus the white smoke and rough starting.

 

[Terry finch]

Even tho I have no water loss ?
This is what's confusing me

 

[Rideen]

White smoke is from coolant / water, nothing else should produce white smoke. The water loss is minimal, I top mine up every 1000 miles or so.

 

[Terry finch]

Is there anything out there that can seal it apart from a new head ?
Thanks Terry

 

[Terry finch]

Or could it be skimmed and refitted with a new gasket ?
Thanks Terry

 

[Terry finch]

Sorry one more question would it show up on a pressure test ?
Thanks Terry

 

[Terry finch]

 

[Rideen]

It should show up on a pressure test and it cannot be fixed properly due to the way these cracks form - they are tiny, cannot be seen even in some cases.

You could use some sealant, but it is not recommended as it can clog up the rest of the cooling system.

 

[Terry finch]

Ok no worries thanks

 

[tdi-man]

I had a c part number head with same fault and wasn't losing much water drove fine etc had cracks between the valves which cant be fixed new head needed.

check the egr cooler isn't leaking as this can cause that problem.

 

[Terry finch]

Well iv put K seal in now and it's still doing the same which I think can only lead to it being the head

Does anyone know where I can get a full bkd engine without getting my arm ripped off or a replacement head ?
Thanks Terry

 

[Terry finch]

Is there a better head to put on than the bkd version c?
Or is there a different engine I could go across to without Have to change to much of the car ?

 

[Rideen]

Just get a C rev head mate (as far as I know there is no later revision). According to most sources, none of these cracked and are perfectly fine. I don't think any other engine would fit for less money compared to the price of a new head.

 

[Terry finch]

I can't even find a descent head on eBay at the moment .
Give the cost of £5-600 for the head and fitting I was starting to think that a low mileage bkd for a extra few hundred may be a good idea

 

[Rideen]

Fitting a new head isn't too big of a job, I've even done it myself once and I am an IT engineer lol.

 

[Terry finch]

Iv never set up a cam belt
And I know these engines are very fine on there timing

 

[Rideen]

Iv never set up a cam belt
And I know these engines are very fine on there timing

That would explain why my car has poor starts.

 

[tdi-man]

Just get a C rev head mate (as far as I know there is no later revision). According to most sources, none of these cracked and are perfectly fine. I don't think any other engine would fit for less money compared to the price of a new head.

my C head cracked between all valves

 

[Rideen]

my C head cracked between all valves

Well yeah, but you have a big remap, so that could be why.

 

[Terry finch]

Has anyOne ever manufactured a steel cylinder head for the bkd engine ?