'04 ISX overspeeds and wont stalling...

Hi!

'04 Volvo with ISX 570 major engine failure.

driver say that engine start overspeeding, he turned off ignition but engene kept accelerating till he cut fuel line.

Metering valve fault caused engine overspeeding, but shut off valve was bad and did not stall the engine.

to change valves is easy, but what internal damage may get engine if ran over tachometer

seems to me repare cost may be higher used engine price...

Any tips, guys!

 

I found turbine ruined. Driver says that may be turbine oil leak caused overspeed but why engine stalled when fuel line was cut?

Tommorow owner gonna tow trucktor to Odessa (it is 150 miles) to drop oil pan and inspect.... but seems to me I gonna find him used N14 on JY and do engine swap

 

i'm back to Lugansk, so when I'll see this engine next time I will do some shots

 

front bank. and shut off valve was disabled.

owner looks for tow truck