This old car salesman trick, put black pepper powder inside the coolant, which will work its way to the crack and seal it cake it up solidly. But I don't know if it will do for your Diesel, plus yours is Alloy head.

I wish I had knew that when i had my 78 BMW 320i, she had cracked head OK, the water always boil when i drive.I bought a 2nd head from a wrecking guy. Put it in myself. But never ran as well. Must had a crack vacuum, turning left the engine always dies too if not touch the gas pedal.

Yours seem to be not as bad, since u can drive.

Many yrs i blew the head gasket in my Dodge colt. Water keeps coming out from rad too. Change the head gasket seems OK.

So I assume no responsibility, do it at your own risk please. It may or may not help , any body can point out the down side? Powder won't plug up rad anyways.



I had put BP in my old 82 Volvo before, because few yrs ago, my car had no anti-freeze. I left it outside all day, not much colder than -5 C. Part of water was frozen!
That night I had to use the car, drove about 3-4 miles i see my temp needle went off the hot end!
I pulled into a gas stn. The water just gushed out. I let her cool down add more water. I figure is not going to get anyworse. Keep praying too.

I was able to gimp home. next day I added the BP. And it seems to keep it down. Drove it for 2 more yrs before i sold her.