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.
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