Tracker 600 - Troubleshooting Engine

62
Troubleshooting Engine
Problem: Engine does not start (no spark at spark plug)
Condition Remedy
1. Ground connections dirty — loose
2. Wiring harness shorting — disconnected
3. Spark plug fouled — damaged
4. ECM faulty
5. Ignition timing sensor faulty
1. Check all ground connections — clean and tight
2. Repair — replace — connect wiring harness
3. Clean — replace spark plug
4. Replace ECM
5. Replace sensor
Problem: Engine does not start (no fuel at cylinder)
Condition Remedy
1. Gas tank empty
2. Gasoline contaminated
3. Fuel pump faulty
4. Fuel hose broken — pinched
5. Gas-tank vent hose obstructed
6. Pick-up valve(s) obstructed — damaged
7. Compression absent
8. ECM faulty
1. Fill tank
2. Replace gasoline
3. Service — replace fuel pump — connections — wires
4. Replace — service hose
5. Remove obstruction — replace vent — hose
6. Remove obstruction — replace pick-up valve(s)
7. Repair — replace damaged — worn engine components
8. Replace ECM
Problem: Engine does not start (fuel does not ignite)
Condition Remedy
1. ECM Check Engine light failed
2. Spark absent
3. Compression low
4. Engine flooded
5. Gasoline contaminated
1. Check codes — repair as necessary
2. Check for spark — see “Engine does not start (no spark at
spark plug)” problem
3. Service engine
4. Clear engine (hold throttle full-open)
5. Clean tank and entire fuel system
Problem: Engine does not idle
Condition Remedy
1. ECM trouble code
2. Injector(s) faulty
3. Fuel pressure regulator faulty
4. Air filter obstructed
1. Service — replace problem component
2. Replace injector(s)
3. Replace regulator — hose
4. Replace air filter
Problem: Engine loses power
Condition Remedy
1. Sensor faulty
2. Spark plug fouled
3. External coil faulty
4. Gas tank vent hose obstructed
5. Compression low
6. ECM faulty
7. Fuel pressure regulator faulty
8. Check Engine light illuminated
9. Injector faulty
1. Check the Check Engine light for trouble code — repair —
replace problem circuit or sensor
2. Replace spark plug
3. Service — replace coil
4. Service — replace vent hose
5. Service engine
6. Replace ECM
7. Replace regulator
8. Check codes — repair as necessary
9. Replace injector