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ON-VEHICLE SERVICE TSB Revision ENGINE MECHANICAL <2.4L ENGINE> 11A-16 COMPRESSION PRESSURE CHECK M1111002601101 Required Special Tool: • MB991824: V.C.I. • MB991827: MUT-III USB Cable • MB991910: MUT-III Main Harness A 1. Before inspection, check that the engine oil, starter and battery are normal. Also, set the vehicle in the following • Engine coolant temperature: 80 − 95°C (176 − 203°F) • Lights and all accessories: OFF • Transaxle: P range NOTE: Vehicles for Canada, the headlight, taillight, etc. 2. Remove all of the ignition coils and spark plugs. NOTE: Doing this will prevent the engine control module WARNING Keep your distance from the spark plug hole when 4. Cover the spark plug hole with a shop towel etc., during cranking. After the engine has been cranked, check for 5. Set a compression gauge to one of the spark plug holes. measure the compression pressure. Standard value (at engine speed of 200 r/min): 7. Measure the compression pressure for all the cylinders, and check that the pressure differences of the cylinders are Limit: 98 kPa (14 psi) 8. If there is a cylinder with compression or a compression difference that is outside the limit, pour a small amount of (1) If the compression increases after oil is added, the cause of the malfunction is a worn or damaged piston ring (2) If the compression does not rise after oil is added, the cause is a burnt or defective valve seat, or pressure is AK303009 CRANKSHAFT AB GENERATOR AK204360 COMPRESSION GAUGE AC |