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8 CHECK SPARK PLUGS
Remove the spark plugs and check for fouling, etc.
SEF156I
OK or NG
OK 䊳 GO TO 9.
NG 䊳 Repair or replace spark plug(s) with standard type one(s). For spark plug type, refer to
“ENGINE MAINTENANCE”, MA-16.
9 CHECK COMPRESSION PRESSURE
Refer to EM-15.
쐌 Check compression pressure.
Standard:
1,226 kPa (12.5 kg/cm
2
, 178 psi)/300 rpm
Minimum:
1,030 kPa (10.5 kg/cm
2
, 149 psi)/300 rpm
Difference between each cylinder:
98 kPa (1.0 kg/cm
2
, 14 psi)/300 rpm
OK or NG
OK 䊳 GO TO 10.
NG 䊳 Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
10 CHECK FUEL PRESSURE
1. Install any parts removed.
2. Release fuel pressure to zero. Refer to EC-51.
3. Install fuel pressure gauge and check fuel pressure.
AEC064B
At idle: Approx. 235 kPa (2.4 kg/cm
2
, 34 psi)
OK or NG
OK 䊳 GO TO 12.
NG 䊳 GO TO 11.
DTC P0300 - P0304 NO.4-1CYLINDER MISFIRE, MULTIPLE
CYLINDER MISFIRE
KA24DE
Diagnostic Procedure (Cont’d)
EC-304
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