1.Before inspection, check that the engine oil, starter and battery are normal. In addition,
set the vehicle to the pre-inspection condition. |
2.Remove the engine air intake pipe. |
3.Remove the inlet manifold. |
4.Remove all of the glow plugs. |
7.Set compression gauge to one of the glow plug holes. 8.Crank the engine and measure the compression pressure. Standard value (at engine speed of 250 r/min): 3,100 kPa Limit (at engine speed of 250 r/min): Minimum 2,800 kPa 9.Measure the compression pressure for all the cylinders, and check that the pressure differences of the cylinders are below the limit. Limit: Maximum 300 kPa 10.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 glow plug hole, and repeat the operations in steps (8) and (9). (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. 11.Connect the crank angle sensor connector. 12.Install the glow plugs. Tightening torque: 17 ± 2 N·m 13.Install the inlet manifold.
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15.Use the M.U.T.-III to erase the diagnosis codes.
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