NEXON BSVI MCE - SERVICE MANUAL

1.2L REVOTRON ENGINE 11 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. Exhaust system / Catcon damaged  Check and take corrective action. 4. Engine Noise Condition Possible Cause Remedy Engine 'pings' or 'knocks' while accelerating or travelling uphill. Improper grade of fuel  Fill fuel tank with a minimum BSIV Fuel Spark plugs excessively worn or gapped improperly.  Inspect spark plugs. Replace if worn. Incorrect valve/ignition timing  Check timing system components and repair or replace as necessary. Excessively worn camshaft  Inspect camshaft lobes and run-out for excessive wear. 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. 'Squeal' or 'chirping' while engine is running. Worn, oil-fouled, or improperly adjusted engine accessory belt.  Check engine accessory belt condition and tension. Adjust or replace. Belt tensioner not properly tightened or defective  Inspect the belt tensioners. Tighten or replace as necessary. 'Clunking' or 'rapping' noise from bottom end of engine Defective piston wrist pin, rod, or main bearings  If noise occurs after taking foot off accelerator pedal, inspect piston wrist pins.  If noise is constant inspect rod bearings and main bearings for proper clearance and condition  Replace bearings as necessary. 'Tapping' or 'ticking' noise from the top end of the engine Fuel injectors worn excessively  Fuel injectors will make some ticking noise. Replace fuel injectors if not putting out enough fuel to cylinders. Excessively worn camshaft  Inspect camshaft. lobes and runout for excessive wear. Replace as necessary. Valve springs, tappets, or rocker arms worn  Inspect valve train components; replace as necessary.