BKD Cylinder head

[Crasher]

Or excessive EGR flow.

[richard_gmt]

Could do, you can use it as basis for further diagnosis. if diesel is emitting the exhaust unburnt it points to a lack of temperature in the cylinder which is created by compression in conjunction with timing, don't think glow plugs effect anything at this time of year. Not properly seated valve, or coolant entering cylinder these are both possibilities.

How does it idle once started? does it run on all four cylinders immediately?

No, there is 3-5s where it has some misfire but then it clears.

Or excessive EGR flow.

Fully disabled EGR.

Well, head is off now. There is no single cylinder where the simple water test won't fail. None of the cylinders hold water in the ports. Some even more than 1 valve per cylinder will not hold water.

I've not taken it to the machine shop yet. This is a C version manufactured in 06 according to the date on the back. However cylinder 2 and 3 do have a crack around the glow plug. It seemed to be fine, there was no coolant loss.

Not sure what to do here. Buying a new head is something I would prefer to avoid. Not sure if they can be welded as the C versions should be stronger maybe they will hold.

[Crasher]

The problem is usually cracking of the block top surface around the dowel sleeves.