RE: YS 170 DZ CDI
Hallo
I have also have some pump problems after 50Ll fuel on 1 170 cdi low oil and 30l fuel on a second 170 cdi LO
my pump problems where the Alu is worn inside pumpe house ,, made off the pump valves
so i drill out 6mm*2mm in the pump /house and put some hard 6mm braze tube in ,, and grind after with fine water sanding paper, grid 2000
and then some new pump valvs..
it taks a½ hour t made and costs " nothing" ok some valvs
hope it help some one ..