03-05-2016, 10:55 AM
Bring even a stock XUD9 on full power with the coolant temperature past 100*C and I'll put money on the gasket popping.
You *NEED* to get some sort of accurate gauge in there, not just relying on the crappy in dash one, they're well known to talk total bollocks.
Also, WRT the preinjection rattle when the engine is hotter... There's no correction of the preinjection quantity (or angle...) past 80*C from what I've seen - so any changes are purely physical.
Look at the calibration of corrections vs coolant temperature made by the ECU, you'll find that almost ALL of the corrections stop and they run at their normal base values at 80*C - that's because these engines were designed to run at that temperature.
You *NEED* to get some sort of accurate gauge in there, not just relying on the crappy in dash one, they're well known to talk total bollocks.
Also, WRT the preinjection rattle when the engine is hotter... There's no correction of the preinjection quantity (or angle...) past 80*C from what I've seen - so any changes are purely physical.
Look at the calibration of corrections vs coolant temperature made by the ECU, you'll find that almost ALL of the corrections stop and they run at their normal base values at 80*C - that's because these engines were designed to run at that temperature.
