Engine Performance Diagnostic Table

WARNING: This page is about a different variant/trim than selected.

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/Starting - Diagnosis and Testing
	4. Incorrect spark plug gap.	4. Refer to Electrical/Ignition Control - Specifications
	5. Dirt or water in fuel system.	5. Clean system and replace fuel filter.
	6. Faulty fuel pump, relay or wiring.	6. See Engine - Diagnosis and Testing
ENGINE STALLS OR ROUGH IDLE	1. Idle speed set to low.	1. See Engine - Diagnosis and Testing
	2. Vacuum leak.	2. Inspect intake manifold and vacuum hoses, repair or replace as necessary.
	3. Incorrect engine timing.	3. Correct engine timing.
ENGINE LOSS OF POWER	1. Dirty or incorrectly gapped spark plugs.	1. Replace spark plugs.
	2. Dirt or water in fuel system.	2. Clean system and replace fuel filter.
	3. Blown cylinder head gasket.	3. Replace cylinder head gasket.
	4. Low compression.	4. See CYLINDER COMPRESSION PRESSURE LEAKAGE
	5. Burned, warped or pitted valves.	5. Replace as necessary.
	6. Plugged or restricted exhaust system.	6. Inspect and replace as necessary.