Hello i have a mazada b2500 turbo and getting alot of smoke an holding back what can be done ???

I have 2000 international 4700 the oil is being pulled from the engine into the fuel pump. Have not been able to find the problem any information will helpful thanks

Ed here, what no talking. looks like leaking injector fittings on cummings. inside valve covers i dont like. my cummings filled oil pan full on CIH tractor, havent found leak on either pump???? suspect lift pump, but dont see leak running by hand on bench.

I have 2000 international 4700 the oil is being pulled from the engine into the fuel tank. Have not been able to find the problem any information will helpful thanks