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KRYOTEC ENGINE
15
ENGINE PERFORMANCE DIAGNOSTIC TABLE
CONDITION
POSSIBLE CAUSE
CORRECTION
ENGINE WILL
NOT START
1. Weak battery.
1. Charge or replace as necessary.
2. Corroded Or loose battery
connections.
2. Clean and tighten battery connections. Apply a
coat of light mineral grease to the terminals.
3. Faulty starter.
3. (Refer to Electrical/ Engine Systems/ Starting -
Diagnosis and Testing).
4. Faulty camshaft position
sensor.
4. Replace the camshaft position sensor (Refer to
Electrical/ Ignition Control/ Sensor Camshaft
Position/ Removal).
5. Faulty crankshaft position
sensor.
5. Replace crank position sensor (Refer to Fuel
System/ Fuel Injection/Sensor, Crankshaft Position/
Removal).
6. Faulty fuel pump, relay or
winding.
6. Repair or replace as necessary.
7. Dirt or water in fuel system.
7. Clean system and replace fuel filter.
ENGINE
STALLS OR
ROUGH IDLE
1. Vacuum leak.
1. Inspect intake manifold and vacuum hoses,
repair or replace as necessary.
2. Faulty crank position sensor.
2. Replace crank position sensor (Refer to Fuel
System/ Fuel Injection/ Sensor, Crankshaft
Position/ Removal)
3. Incorrect camshaft timing.
3. (Refer to Engine/ Valve Timing - Standard
Procedure)
ENGINE LOSS
OF POWER
1. Dirt or water in fuel system.
1. Clean system and replace fuel filter.
2. Faulty fuel pump.
2. Replace the fuel pump
3. Blown cylinder head gasket.
3. Replace the cylinder head gasket.
4. Low compression
4. (Refer to Engine - Diagnosis and Testing) , repair
as necessary
5. Burned, warped or pitted
valves
5. Replace as necessary
6. Plugged or restricted exhaust
system.
6. Inspect and replace as necessary.
7. Incorrect camshaft timing.
7. (Refer to Engine/ Valve Timing - Standard
Procedure)
ENGINE
MISSES ON
ACCELERATION
1. Dirt in fuel system.
1. Clean fuel system.
2. Burned, warped or pitted
valves.
2. Replace as necessary.
ENGINE
MISSES AT
HIGH SPEED
Dirt or water in fuel system.
Clean system and replace fuel filter.