1.2L REVOTRON ENGINE 9 Improper Electrical supply at pump connector If electrical supply is in proper check electrical system. In adequate fuel pump pressure IF fuel pump does not built pressure then replace. Incorrect manifold absolute pressure (MAP) sensor signal input. Check for leakage at sensor. Perform diagnostic test. Engine idles erratically Disconnected or leaking vacuum line or vacuum leak at inlet manifold. Inspect all vacuum lines and connections. Repair or replace as necessary. Faulty ETC unit. Perform diagnostic test. Replace as necessary. Incorrect valve / ignition timing. Check timing system components and repair or replace as necessary. Fuel filter if clogged. Replace the fuel filter. fuel lines are pinched or clogged Correct the routine to avoid pinch, or allow shop air to clear the clog in the fuel lines. Improper Electrical supply at pump connector If electrical supply is in proper check electrical system. In adequate fuel pump pressure IF fuel pump does not built pressure then replace. Poor Engine Performance Condition Possible Cause Remedy Maximum RPM -low Insufficient battery voltage/charge - test battery and charging system. Clean and tighten battery connections Jump start engine. Battery or charging system component faulty. Replace as necessary. Obstructed air filter or air inlet Clean or replace air filter or inlet. Improper grade or contaminated fuel Rush fuel system with fresh, clean, fuel of the correct type. Replace fuel filter. Faulty spark plugs, wires, or ignition coil Check ignition system components for proper operation. Replace as necessary. Malfunctioning engine management system component Perform engine management system diagnostic test as described in this section of the manual. Fuel filter if clogged. Replace the fuel filter. fuel lines are pinched or clogged Correct the routine to avoid pinch, or allow shop air to clear the clog in the fuel lines. Improper Electrical supply at pump connector If electrical supply is in proper check electrical system. In adequate fuel pump pressure IF fuel pump does not built pressure then replace.
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