Excessive Black Smoke - Perkins 1104E Series Troubleshooting Manual

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Troubleshooting Section
•
Seizure
•
Broken components
•
Bent components

Excessive Black Smoke

Probable Causes
•
Air intake system or exhaust system
•
Individual malfunctioning cylinder
• Valve lash
•
Low compression (cylinder pressure)
•
Fuel injection nozzles
• Turbocharger (if equipped)
•
Broken 5 volt supply wire to the pressure sensor in
the intake manifold
•
ECM software
Recommended Actions
Air Intake System or Exhaust System
1. Check the air filter restriction indicator, if equipped.
2. Ensure that the air filter is clean and serviceable.
3. Check the air intake and the exhaust system for
the following defects:
•
Blockages
•
Restrictions
•
Damage to the air intake and exhaust lines and
hoses
4. Make all necessary repairs to the engine.
5. If the problem has not been eliminated, proceed
to "Individual Malfunctioning Cylinder".
Individual Malfunctioning Cylinder
1. With the engine speed at a fast idle, loosen the
high pressure fuel line to the fuel injection nozzle
of number 1 cylinder. Note if there is any reduction
in engine speed. Tighten the high pressure fuel
line to the fuel injection nozzle.
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2. Individually repeat this procedure for each fuel
injection nozzle. If there is no reduction in the
engine speed proceed to "Checking the Fuel
Injection Nozzles".
3. If there is a reduction in engine speed proceed to
"Valve Lash".
Valve Lash
Ensure that the valve lash is correct. Reset the valve
lash if it is not correct. Refer to Testing and Adjusting,
"Engine Valve Lash - Inspect/Adjust".
If the repair does not eliminate the fault proceed to
"Low Compression (cylinder pressure)".
Low Compression (cylinder pressure)
Examples of low compression are shown in the
following list:
• Mechanical problem
•
Faulty piston rings
•
Worn cylinder bores
• Worn valves
•
Faulty cylinder head gasket
•
Damaged cylinder head
1. Remove the fuel injection nozzles and perform a
compression test. Refer to Systems Operation,
Testing and Adjusting, "Compression - Test "data.
2. Make all necessary repairs to the engine.
3. Ensure that the repairs have eliminated the faults.
4. If the repair does not eliminate the fault proceed to
"Checking the Fuel Injection Nozzles".
Checking the Fuel Injection Nozzles
1. Remove the fuel injection nozzles from the cylinder
head. Refer to Disassembly and Assembly, "Fuel
Injection Nozzle - Remove".
RENR2696-01