Slobbering From Exhaust Pipe - Detroit Diesel Series 60 EGR Technician Manual

DDEC V TESTING

SLOBBERING FROM EXHAUST PIPE

Troubleshooting steps are as follows.
1. Using DDDL, perform a DDC Extraction of DDEC Reports. Review extraction data
for excessive idle time.
[a] If the idle times were 35% and higher, which are considered to be excessive, reduce
engine idle time. Proceed step 2.
[b] If the idle times were less than 35%, proceed to step 2.
2. Using DDDL, verify the engine coolant temperature.
[a] If the coolant temperature was below recommended operating parameters, refer to
the "Coolant" section of the Series 60 Service Manual, (6SE483) coolant analysis
program information.
[b] If the coolant temperature was at recommended operating parameters, proceed
to step 3.
3. Verify that none of the fuel injectors are leaking fuel. Refer to the
"N3 Electronic Unit Injector" section of the Series 60 Service Manual, (6SE483) for
removal, inspection, and replacement steps.
4. Verify valve lash clearances. Refer to section "Valve Clearance and Injector Timing"
section of the Series 60 Service Manual, (6SE483) for inspection steps.
5. Check for worn cylinders.
[a] Perform a crankcase pressure test. Refer to the proper service section of the Series 60
Service Manual, (6SE483) for test procedures.
[b] Perform a compression test. Refer to the proper service section of the Series 60
Service Manual, (6SE483) for test procedures.
6. Verify that the VNT turbocharger is operating correctly. Refer to the "Turbocharger"
section of the Series 60 Service Manual, (6SE483) for removal, inspection, and
replacement steps.
10-6
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION