Dodge D350 1990 - Fuel Leakage by the Rings

Base Engine Components
DODGE Turbo Diesel
Engine Lubricating System
Page 9B-11
Use a small mirror to check for leaks white pumping the
priming lever on the lift pump, if a leak is found, remove the
injection pump. The seal can be replaced.
Fuel Leakage by the Rings
Incomplete combustion in the cylinders can result in unburned
fuel draining into the oil pan.
This condition can be caused by a leaking injector or reduced
compression caused by inadequate piston ring sealing.
An Increase in white exhaust smoke during the first start of the
day is a symptom that an Injector may be leaking.
An injector leak will also cause the engine to run rough and
have low power.
Remove and replace leaking injectors.