ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5E-12590-823225--1 1096
LACK OF POWER, SLUGGISH OR SPONGY
Definition: Engine delivers less than expected power. Little or no increase in speed when
throttle control is moved toward Wide Open Throttle (WOT).
PRELIMINARY CHECKS
Perform the careful visual/physical checks as described at the start of “Troubleshooting Charts”
section.
Remove flame arrestor and check for dirt, or for being plugged. Replace as necessary.
CHECK FUEL SYSTEM FOR:
1. Dirty or plugged water separating fuel filter.
2. Contaminated fuel.
3. Possible open in injector driver CKTs 467 or 468.
4. Improper fuel pressure.
5. Flooded VST (if equipped).
CHECK IGNITION SYSTEM FOR:
1. Proper initial engine timing.
2. Secondary ignition voltage.
3. Proper operation of Ignition Control (IC)/Knock Sensor (KS), open or short to ground in CKT 423
or 485 will set a DTC 42 or 43.
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