Inspect Compression - Toyota 2GR-FE Manual

DLC3
1 2 3 4 5 6 7 8
9 1011 1213 141516
TAC
2GR-FE ENGINE MECHANICAL – ENGINE
(c) When not using the intelligent tester:
Check the idle speed.
(1) Using SST, connect the tachometer test probe
(2) Check the idle speed.
9.

INSPECT COMPRESSION

A122830E15
(a) Warm up and stop the engine.
(b) Disconnect the injector connectors.
(c) Remove the intake air surge tank (See page
13).
(d) Remove the 6 ignition coils.
(e) Remove the 6 spark plugs.
(f) Check the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
(2) While cranking the engine, measure the
A129621
(3) If the cylinder compression is low, pour a small
(g) Install the 6 spark plugs.
Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
• Switch off all accessories and air
conditioning before connecting the
intelligent tester.
HINT:
Refer to the intelligent tester operator's manual
for further details.
to terminal 9 (TAC) of the DLC3.
SST 09843-18030
Idle speed:
600 to 700 rpm
hole.
compression pressure.
Compression pressure:
2
1.4 MPa (14 kgf/cm , 199 psi)
Minimum pressure:
2
0.98 MPa (10 kgf/cm
Difference between each cylinder:
2
0.1 MPa (1.0 kgf/cm , 15 psi)
NOTICE:
• Always use a fully charged battery to
obtain an engine speed of 250 rpm or
more.
• Check the other cylinders' compression
pressure in the same way.
• This measurement must be done as
quickly as possible.
amount of engine oil into the cylinder through
the spark plug hole and inspect again.
HINT:
• If adding oil increases the compression, the
piston rings and/or cylinder bore may be
worn or damaged.
• If pressure stays low, a valve may be stuck
or seated improperly, or there may be
leakage in the gasket.
EM–3
FU-
, 142 psi)
EM