New Holland 667TA/EBF, Repair Manual

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1-7
87519804 NA Issued 11-06 Bur
CHAPTER 1 - DIAGNOSTICS
ENGINE REPAIR MANUAL
ENGINE EXHAUST SMOKE BLACK OR DARK GREY
ENGINE EXHAUST SMOKE GREY (VERGING ON WHITE)
ENGINE EXHAUST SMOKE LIGHT BLUE
Air filter plugged.
No
Clean the filter and replace if necessary.
Yes
Electronic fuel system working properly.
No
Check using the Electronic Service Tool
(EST) and repair or replace if necessary.
Yes
Fresh clean diesel fuel in tank.
No
Clean the tank and replace the fuel filter.
Yes
Compression good on all cylinders.
No
Check each cylinder for proper
compression, overhaul the engine or make
repairs on defective parts (valves, piston
rings, etc.).
Injectors working properly.
No
Check using the Electronic Service Tool
(EST) and repair or replace if necessary.
Yes
Coolant level correct.
No
Possible flow of coolant into the combustion
chamber; replace the cylinder head gasket
or overhaul the engine.
Yes
Pre-Post heating system working properly.
No
Check using a multi meter replace or repair.
Yes
Fresh clean diesel fuel in tank.
No
Clean the tank and replace the fuel filter.
Excessive oil consumption.
Yes
Check: oil vapor breather, cylinder
compression. Leaks into or out of
turbocharger. Leaks from valve guides.
Overhaul cylinder head or engine if
necessary.
No
Oil contaminated with diesel fuel.
Yes
Check the high pressure fuel pump O-ring,
injector O-ring for failure, or cylinder head
porosity.