TDI Engine: Won't Start After Head Repair

Help!

'At 25,000 km, the timing belt was replaced by the dealer at 240,000 km, but it still failed. Fortunately, only three valves were bent and two hydraulic lifters were broken. After reassembly (with correct timing), the engine doesn't start, and it doesn't even spark when jump-started. However, when jump-starting and giving it gas, white smoke comes out from the back.'

Does anyone have any advice?

Hi,

As far as I can tell, white smoke always indicates the presence of (cooling) water in the combustion chamber.

Are you sure that the head was undamaged after the accident, or that nothing else was damaged?

Greetings.
Thomas.

Thomas wrote:

As far as I can tell, white smoke usually indicates coolant in the combustion chamber.

White smoke can indicate water, but it doesn't necessarily have to. In this case, the engine isn't running, so I'd like to rule that out as a possibility.
It's likely unburned diesel fuel that's being injected, which is also easily recognizable by the smell.
Unless there's an extreme case where there's no compression in all cylinders, the injection timing is likely incorrect.
Okay, let's measure everything again!

Well, the imprinted markings were probably incorrect. That's also why there are obviously later-added color markings on the pump.
It's working again!