A cracked "engine housing" probably means a cracked block. Very not good. A new engine will most likely be required to fix the problem, as a cracked block is next to impossible to repair.
diesel isn't cracked, but a heavy oil fraction is cracked to obtain diesel
Cracked injector cup(s) are a distinct possibility here.
Diesel can be cracked, it can be cracked into petrol, paraffin and ethene for plastics.
Cracked injector cups is the main cause of diesel in the cooling system. There is a special tool to remove them with out taking the head off.
You could possibly have a cracked head gasket.
The hole in the bell housing, on a C12 Caterpillar diesel engine, can be found on the bottom of the bell housing. The hole faces straight down.
they cracked down on diesel engine manufacturers' installation of "defeat devices," or software that changed engine performance and emissions under highway driving conditions.
Most of the time a diesel has a hard time starting when its cool. When they have a hard time starting when hot, it is usually caused by the fuel running back into the tank. Check for a cracked fuel filter housing or a cracked low pressure fuel line. It is possible you have the wrong fuel filter. Install a top quality name brand filter like Wiks or Baldwin that has an anti bleed back valve in the filter.
I've seen this happen with a leaking injector, a cracked head or an faulty oil cooler.
worn out oil pump gears,housing,pump cover,oil pick up pipe cracked or seal worn out.
on the intake manifold near housing
pump housing front top of engine