TM10-3950-672-24-2
Use a small mirror to check for leaks while pumping the
priming lever on the lift pump. If a leak is found,
replace the injection pump. The seal can be replaced
by an authorized Service Center.
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 is leaking.
An injector leak will also cause the engine to run rough
and have low power.
Remove and replace leaking injectors (refer to Shop
Manual, 3810206 for test and repair instructions).
Perform a compression check to verify piston ring
sealing (refer to the Base Engine Components Section).
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