ZKD Replacement: How to Change It Easily

Translated on 24-09-2026, 5:24.

Hello forum,

I'm new to this forum and already have a question: I have a head gasket replacement coming up.
(Volkswagen Golf 2 D, manufactured in 1989, 190,000 km) What other measures should be taken in this case?

hello

Bernie.

Translated on 24-09-2026, 5:25.

Enjoy your meal!

Why is it broken?
I would replace the thermostats, and possibly the radiator hoses as well, if they seem porous.

You could also have the fuel injectors checked or cleaned, given the mileage.
You can get new ones; for example, you can find them at dieselsend.de.

Hi, Jockel.

Guest Free account, no CAN development support

Please examine the head very carefully, paying particular attention to any cracks between the valves or between the valve and the combustion chamber.

CU Gremlin.

Translated on 24-09-2026, 5:26.

If your ZKD (presumably a type of component) failed due to overheating, be sure to also check the flatness of the head.

Translated on 24-09-2026, 5:27.

Hello forum,

The ZKD (likely referring to a specific component or device) failed due to overheating (producing white smoke). Unfortunately, this happened this morning.
Started briefly, starter immediately seized up ---> Could be water damage? Is it possible to check for water damage?

Hello.
Bernie.

Guest Free account, no CAN development support

Started briefly, starter immediately seized up ---> Could be water damage? Is it possible to check for water damage?

argh...

Hopefully, nothing is bent or damaged.

Remove the glow plugs or fuel injectors and turn them manually.
Then you'll see if water is coming out, and if it is, please quickly lower your head and lie down on something dry.

CU Gremlin.