TROUBLE DIAGNOSIS — GENERAL DESCRIPTION; Symptom Matrix Chart (Cont'd) — Engine/Valve/Exhaust/Lubrication/Cooling

EF & EC-7059spec table

Source matrix uses heavy rowspan merging in the rating columns; values placed on the visually-anchoring row, adjacent rowspan members left blank.

Continued from EF & EC-7058

Symptom Matrix Chart (Cont'd)

CG10, CGA3

Symptom Matrix Chart — Engine Mechanical & Other (continued)

Category	Item	AA — HARD/NO START/RESTART (EXCP. HA)	AB — ENGINE STALL	AC — HESITATION/SURGING/FLAT SPOT	AD — SPARK KNOCK/DETONATION	AE — LACK OF POWER/POOR ACCELERATION	AG — ROUGH IDLE/HUNTING	AH — IDLING VIBRATION	AK — OVERHEATS/WATER TEMPERATURE HIGH	AL — EXCESSIVE FUEL CONSUMPTION	AM — EXCESSIVE OIL CONSUMPTION	Reference page
Engine	Cylinder head	5	5	5	5	5	5	5	4	5	3	EM section
Engine	Cylinder head gasket											EM section
Engine	Cylinder block										4	EM section
Engine	Piston	6	6	6	6	6	6	6		6		EM section
Engine	Piston ring											EM section
Engine	Connecting rod											EM section
Engine	Bearing											EM section
Engine	Crankshaft											EM section
Valve mechanism	Timing chain	5	5	5	5	5	5	5		5		EM section
Valve mechanism	Camshaft										3	EM section
Valve mechanism	Intake valve											EM section
Valve mechanism	Exhaust valve											EM section
Exhaust	Exhaust manifold/Tube/Muffler/Gasket	5	5	5	5	5	5	5		5		FE section
Exhaust	Three way catalyst											FE section
Lubrication	Oil pan/Oil strainer/Oil pump/Oil filter/Oil gallery	5	5	5	5	5	5	5		5		MA, EM and LC sections
Lubrication	Oil level (Low)/Filthy oil											MA, EM and LC sections
Cooling	Radiator/Hose/Radiator filler cap	5	5	5	5	5	5	5	4	5		LC section
Cooling	Thermostat								5			LC section
Cooling	Water pump											LC section
Cooling	Water gallery											LC section
Cooling	Cooling fan								5			EC-7219
Cooling	Coolant level (low)/Contaminated coolant											MA section

Engine

ItemCylinder head

AA — HARD/NO START/RESTART (EXCP. HA)5

AB — ENGINE STALL5

AC — HESITATION/SURGING/FLAT SPOT5

AD — SPARK KNOCK/DETONATION5

AE — LACK OF POWER/POOR ACCELERATION5

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING5

AH — IDLING VIBRATION5

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH4

AL — EXCESSIVE FUEL CONSUMPTION5

AM — EXCESSIVE OIL CONSUMPTION3

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemCylinder head gasket

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemCylinder block

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION4

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemPiston

AA — HARD/NO START/RESTART (EXCP. HA)6

AB — ENGINE STALL6

AC — HESITATION/SURGING/FLAT SPOT6

AD — SPARK KNOCK/DETONATION6

AE — LACK OF POWER/POOR ACCELERATION6

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING6

AH — IDLING VIBRATION6

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION6

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemPiston ring

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemConnecting rod

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemBearing

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Engine

ItemCrankshaft

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Valve mechanism

ItemTiming chain

AA — HARD/NO START/RESTART (EXCP. HA)5

AB — ENGINE STALL5

AC — HESITATION/SURGING/FLAT SPOT5

AD — SPARK KNOCK/DETONATION5

AE — LACK OF POWER/POOR ACCELERATION5

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING5

AH — IDLING VIBRATION5

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION5

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Valve mechanism

ItemCamshaft

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION3

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Valve mechanism

ItemIntake valve

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Valve mechanism

ItemExhaust valve

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEM section

Exhaust

ItemExhaust manifold/Tube/Muffler/Gasket

AA — HARD/NO START/RESTART (EXCP. HA)5

AB — ENGINE STALL5

AC — HESITATION/SURGING/FLAT SPOT5

AD — SPARK KNOCK/DETONATION5

AE — LACK OF POWER/POOR ACCELERATION5

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING5

AH — IDLING VIBRATION5

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION5

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageFE section

Exhaust

ItemThree way catalyst

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageFE section

Lubrication

ItemOil pan/Oil strainer/Oil pump/Oil filter/Oil gallery

AA — HARD/NO START/RESTART (EXCP. HA)5

AB — ENGINE STALL5

AC — HESITATION/SURGING/FLAT SPOT5

AD — SPARK KNOCK/DETONATION5

AE — LACK OF POWER/POOR ACCELERATION5

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING5

AH — IDLING VIBRATION5

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION5

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageMA, EM and LC sections

Lubrication

ItemOil level (Low)/Filthy oil

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageMA, EM and LC sections

Cooling

ItemRadiator/Hose/Radiator filler cap

AA — HARD/NO START/RESTART (EXCP. HA)5

AB — ENGINE STALL5

AC — HESITATION/SURGING/FLAT SPOT5

AD — SPARK KNOCK/DETONATION5

AE — LACK OF POWER/POOR ACCELERATION5

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING5

AH — IDLING VIBRATION5

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH4

AL — EXCESSIVE FUEL CONSUMPTION5

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageLC section

Cooling

ItemThermostat

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH5

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageLC section

Cooling

ItemWater pump

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageLC section

Cooling

ItemWater gallery

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageLC section

Cooling

ItemCooling fan

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH5

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageEC-7219

Cooling

ItemCoolant level (low)/Contaminated coolant

AA — HARD/NO START/RESTART (EXCP. HA)

AB — ENGINE STALL

AC — HESITATION/SURGING/FLAT SPOT

AD — SPARK KNOCK/DETONATION

AE — LACK OF POWER/POOR ACCELERATION

AF — HIGH IDLE/LOW IDLE

AG — ROUGH IDLE/HUNTING

AH — IDLING VIBRATION

AJ — SLOW/NO RETURN TO IDLE

AK — OVERHEATS/WATER TEMPERATURE HIGH

AL — EXCESSIVE FUEL CONSUMPTION

AM — EXCESSIVE OIL CONSUMPTION

HA — BATTERY DEAD (UNDER CHARGE)

Reference pageMA section

NOTE

1 - 6: The numbers refer to the order of inspection.

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TROUBLE DIAGNOSIS — GENERAL DESCRIPTION; Symptom Matrix Chart (Cont'd) — Engine/Valve/Exhaust/Lubrication/Cooling

Symptom Matrix Chart (Cont'd)

Symptom Matrix Chart — Engine Mechanical & Other (continued)

See also

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