EGTS Up Why?

[10G]

Since doing the Canning, the EGTs on the 3 litre CRD are up higher than they've ever been.

Used to very rarely see it hit 600, now it's only got to be in the mid twenties and it hits 600.

On the Canning we suffered through very nasty corrugations, lots of mud and water.

I think the exhaust is now emitting fuf fuf fuf noise instead of the normal bop bop bop, which sounds like an exhaust leak somewhere.

So the question is, what can make the EGTs increase?

Restricted exhaust? Mud caked radiator? Buggered EGT probe? Leaky exhaust? Leaky join at dump pipe?

I've also noticed an increase in PCV smoke as well.



Thanks for any help.