07-11-2013, 03:03 PM
Whoa whoa, so much confusion in here.
Running lean (i.e. greater than around 16:1 - the point most Diesels run around) does NOT mean more heat - that's petrol land. If that were the case then as soon as you lift off the throttle then the temperature would go mental since you're running at more than 100:1.
Running a Diesel rich (i.e. blowing coal) gets things VERY hot. The more fuel you inject - the hotter your EGTs get. You eventually get to a point where MORE fuel will actually cool things down, but literally, the cloud out the back would be so bad and think the engine will probably be so badly bogged it would barely run - that's when you get a CHRONIC fuel bog on an 11mm pumped car at low RPMs, you inject so much fuel it cools it down, ends up boiling instead of burning and instead going out the back as white/grey smoke rather than black soot.
HDis don't put much heat into their coolant in comparison to XUDs, however, they should still all run at the same temperature - they always put a bit of heat in, enough to bring it up to temperature - they should sit at the 80*C mark if the cooling system is functioning properly.
Peugeots don't have the dash damping that VW do - the VWs have a range at which they'll display only 90*C - so from around 87*C to 95*C they'll just display bang upright - past there they'll go up or down... Other thing with Peugeot dashes - they tend to talk total bollocks - I've seen dashes that read 90*C regularly or 75*C regularly, the engines actually at the same temperature, it's just the dash talking bollocks.
Running lean (i.e. greater than around 16:1 - the point most Diesels run around) does NOT mean more heat - that's petrol land. If that were the case then as soon as you lift off the throttle then the temperature would go mental since you're running at more than 100:1.
Running a Diesel rich (i.e. blowing coal) gets things VERY hot. The more fuel you inject - the hotter your EGTs get. You eventually get to a point where MORE fuel will actually cool things down, but literally, the cloud out the back would be so bad and think the engine will probably be so badly bogged it would barely run - that's when you get a CHRONIC fuel bog on an 11mm pumped car at low RPMs, you inject so much fuel it cools it down, ends up boiling instead of burning and instead going out the back as white/grey smoke rather than black soot.
HDis don't put much heat into their coolant in comparison to XUDs, however, they should still all run at the same temperature - they always put a bit of heat in, enough to bring it up to temperature - they should sit at the 80*C mark if the cooling system is functioning properly.
Peugeots don't have the dash damping that VW do - the VWs have a range at which they'll display only 90*C - so from around 87*C to 95*C they'll just display bang upright - past there they'll go up or down... Other thing with Peugeot dashes - they tend to talk total bollocks - I've seen dashes that read 90*C regularly or 75*C regularly, the engines actually at the same temperature, it's just the dash talking bollocks.
