1.Before inspection, set the
vehicle to the pre-inspection condition. |
2.Disconnect the ignition
coil connectors and then remove all of the ignition coils
and spark plugs. |
5.Set compression gauge to
one of the spark plug holes. 6.Crank the engine with the throttle valve fully open and measure the compression pressure. Standard value (at engine speed of 200 r/min):
1,440 kPa <4B12> Minimum 1,000 kPa 7.Measure the compression pressure for all the cylinders, and check that the pressure differences of the cylinders are below the limit. Limit: Maximum 98 kPa 8.If there is a cylinder with compression or a compression difference that is outside the limit, pour a small amount of engine oil through the spark plug hole, and repeat the operations in steps from 5 to 7. (1) If the compression increases after oil is added, the cause of the malfunction is a worn or damaged piston ring and/or cylinder inner surface. (2) If the compression does not rise after oil is added, the cause is a burnt or defective valve seat, or pressure is leaking from the gasket. 9.Connect the injector connector. 10.Install the spark plugs and spark plug cables. |
11.Use the M.U.T.-III to
erase the diagnosis codes.
|