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ENGINE <4D6> -
On-vehicle Service
11C-13
5. Set compression gauge to one of the glow plug holes.
6. Crank the engine and measure the compression pressure.
Standard value:
3,500 kPa (at engine speed of 280 r/min)
Limit: Min. 2,560 kPa (at engine speed of 280 r/min)
7. Measure the compression pressure for all cylinders, and
check that the pressure differences of the cylinders are
below the limit.
Limit: Max. 300 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 glow plug hole, and repeat the
operations in steps 6 and 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 fuel cut solenoid valve connector.
10. Install the glow plugs and the glow plug plate.
TIMING BELT TENSION ADJUSTMENT
11100280174
There are two timing belts: one is the timing belt for the
valve timing, and the other is the timing belt B for driving
the right-side counterbalance shaft.
1. Remove the timing belt upper cover.
2. Remove the glow plug plate and all of the glow plugs.
3. Turn the crankshaft clockwise and check that there is
nothing wrong with the timing belt. Replace the belt if
necessary.
4. Turn the crankshaft clockwise to set the No.1 cylinder
to the compression top dead centre position.
Compression gauge
Adapter
Timing marks