Snowmobile Arctic Cat (2007 year). Manual - part 30

 

  Index      Snowmobiles / ATV     Snowmobile Arctic Cat - service manual 2007 year

 

Search            

 

 

 

 

 

 

 

  

 

Content   ..  28  29  30  31   ..

 

 

Snowmobile Arctic Cat (2007 year). Manual - part 30

 

 

2-105

2

Troubleshooting

Engines 

Problem: Engine Does Not Start (No Spark at Spark Plugs)

Condition

Remedy

1. Ground connections dirty — loose
2. Wiring harness shorting — disconnected
3. Emergency stop switch in DOWN position — 

malfunctioning

4. Throttle/ignition monitor switch 

malfunctioning

5. Spark plugs fouled — damaged
6. Idle speed control (ISC) not functioning

7. ECU faulty
8. Ignition timing sensor faulty

1. Check all ground connections — clean and tight
2. Repair — replace — connect wiring harness
3. Move switch to UP position — replace throttle 

control

4. Adjust throttle cable tension — replace throttle 

body assembly

5. Clean — replace spark plugs
6. Turn ignition switch ON and OFF — listen for 

stepping motor operation

7. Replace ECU
8. Replace sensor

Problem: Engine Does Not Start (No Fuel at Cylinders)

Condition

Remedy

1. Gas tank empty
2. Fuel pressure regulator faulty

3. Gasoline contaminated
4. Fuel pump faulty

5. Fuel hose broken — pinched
6. Gas-tank vent — hose obstructed
7. Pick-up valve(s) obstructed — damaged
8. Compression absent

9. ECU faulty

1. Fill tank
2. Replace regulator (in gas tank - 660 non-turbo) 

or (on fuel rail - 660 turbo)

3. Replace gasoline
4. Service — replace fuel pump — connections — 

wires

5. Replace — service hose
6. Remove obstruction — replace vent — hose
7. Remove obstruction — replace pick-up valve(s)
8. Repair — replace damaged — worn engine 

components

9. Replace ECU

2-106

* Never adjust the idle screw on the throttle body

Problem: Engine Does Not Start (Fuel Does Not Ignite)

Condition

Remedy

1. ECU 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 No Spark at Spark Plugs 

sub-section

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. ECU trouble code
2. Throttle cable too tight
3. Injector(s) faulty
4. Fuel pressure regulator faulty
5. Air-intake silencer obstructed
6. ISC valve faulty

1. Service — replace problem component
2. Adjust throttle cable to specifications*
3. Replace injector(s)
4. Replace regulator — hose
5. Clean air-intake silencer
6. Replace valve

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. ECU faulty
7. Fuel pressure regulator faulty
8. Check Engine light illuminated 
9. Injector faulty

1. Check engine light for trouble code — repair — 

replace problem circuit or sensor

2. Replace spark plugs
3. Service — replace coil
4. Service — replace vent hose
5. Service engine
6. Replace ECU
7. Replace regulator
8. Check codes — repair as necessary
9. Replace injector

2-107

2

Problem: Engine Overheats

Condition

Remedy

1. Coolant low — absent
2. Heat exchanger obstructed
3. Drive system (drive clutch — driven pulley — 

track — drive belt) adjusted incorrectly — worn 
— damaged

4. Rings/grooves carboned
5. Exhaust obstructed
6. Compression low — absent

7. Water pump — thermostat damaged — faulty

1. Add coolant
2. Remove obstruction
3. Troubleshoot — adjust drive system

4. Clean — replace rings — pistons
5. Remove obstruction
6. Repair — replace damaged — worn engine 

components

7. Replace water pump — thermostat

Problem: Engine Backfires

Condition

Remedy

1. Check Engine light illuminated
2. Spark plugs fouled — damaged

1. Check codes — replace problem component
2. Clean — replace spark plugs

Problem: Engine Stops Suddenly

Condition

Remedy

1. Gas tank empty
2. Spark absent
3. Check Engine light illuminated
4. Fuel filter(s) obstructed
5. Fuel pressure low
6. Fuel pump faulty
7. Fuel pump relay faulty
8. Gas tank vent hose obstructed
9. ECU faulty

10. Fuel hose obstructed — broken — pinched

11. Ignition coil faulty
12. Engine seized
13. Throttle/ignition monitor switch — throttle 

cable tension faulty — adjusted incorrectly

14. Oil pressure low
15. Engine coolant temperature above normal

1. Fill tank
2. See No Spark at Spark Plugs sub-section
3. Check codes — replace problem component
4. Replace filter(s)
5. Replace regulator — hose
6. Service — replace fuel pump
7. Replace relay
8. Service vent hose
9. Replace ECU

10. Remove obstruction — repair — replace fuel 

hose

11. Replace ignition coil
12. Overhaul engine
13. Replace throttle control — adjust throttle cable

14. Check oil level/engine
15. Inspect cooling system

3-1

3

 SECTION 3 — ENGINE-RELATED ITEMS

TABLE OF

CONTENTS

Engine-Related Items.............................................. 3-2
Recoil Starter (120 cc) ............................................ 3-2
Accessory Belt (660 cc) .......................................... 3-5
Cooling System Flow/Component Schematics
     (660 cc/1100 cc Z1) ........................................... 3-7
Liquid Cooling System (660 cc) ............................ 3-10
Liquid Cooling System (1100 cc Z1) ..................... 3-13
Checking Compression (660 cc) ........................... 3-14
Removing/Installing Spark Plugs (660 cc) ............ 3-15
Servicing Valves (660 cc) ...................................... 3-16
Removing Spark Plugs (1100 cc Z1) .................... 3-21
Checking Compression (1100 cc Z1) .................... 3-21
Servicing Valves (1100 cc Z1)............................... 3-21
Installing Spark Plugs (1100 cc Z1) ...................... 3-28
Ignition Timing (660 cc) ......................................... 3-28
Changing Oil/Filter (660 cc) .................................. 3-29
Changing Oil/Filter (1100 cc Z1) ........................... 3-30
Changing Oil (120 cc) ........................................... 3-31
Testing Oil Pressure (660 cc/1100 cc Z1) ............. 3-31
Oil Flow Charts (660 cc/1100 cc Z1)..................... 3-33
Water Pump (1100 cc Z1) ..................................... 3-35
Water Pump (660 cc) ............................................ 3-36
Servicing Air Silencer (1100 cc Z1)....................... 3-40
Servicing Air Silencer 
     (660 cc - Non-Turbo) ........................................ 3-44
Servicing Air Silencer (Turbo)................................ 3-46
Turbocharger/Intercooler (Turbo)........................... 3-47
Servicing Oil Pump/Pressure Relief Valve
     (660 cc) ............................................................ 3-51

 

 

 

 

 

 

 

Content   ..  28  29  30  31   ..