Fuel System Operation and Tests
COLD START ADVANCE SYSTEM
NOTE: To check operation of the cold start advance
system, the engine will be operating in an
advanced timing mode. After checks are
completed, ensure that cold start circuits are
returned to their original configuration to ensure
proper injection pump timing and conformance to
emission control standards.
Use JT07158 (FKM10429A) TIME TRAC® Kit to check
injection pump timing when performing operational checks
on the cold start advance system. (See CHECK AND
ADJUST ROTARY INJECTION PUMP TIMING earlier in
B--Cold Start Advance Solenoid
STANADYNE COLD START ADVANCE
NOTE: Checks must be performed on a cold engine.
1. Install JT07158 (FKM10429A) TIME TRAC® Kit .
2. Insure that cold start switch is working by verifying a
voltage potential (12 or 24 volts, depending on
application) to the cold start solenoid.
3. Disconnect wiring connector (A) from the cold start
4. Start cold engine and run at 1200 rpm. Check and
record injection pump timing.
5. Connect wiring connector (A) to cold start advance
solenoid. After approximately 30 seconds, check
injection pump timing.
There should be a 7--10° increase in timing, indicating
proper operation of the cold start advance system.
If no increase in timing was noted, have the injection
pump serviced/repaired by an authorized ADS Diesel
TIME TRAC is a registered trademark of Stanadyne Automotive Corp.
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