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EM -16 ENGINE MECHANICAL SYSTEM

Sympto

Possible cause Maintenance

Exhaust gas leaks Connection is loose

Pipe or muffler is damaged

Retighten

Repair or replace

Unusua

l noise

Baffle

plate inside the muffler fell off

Rubber

hanger is damaged

Pipe or

muffler interferes with the body

Pipe or m

uffler is damaged

Replac

Repair

Repair o

r replace

ADJUSTMENT E148032F

COMPRESSION PRESSURE

1. Before performing on-vehicle inspection, check to see

whether engine oil, starter motor and battery are in

normal condition.

2. Start the engine and warm up until the coolant tem-

perature reaches 80~90

3. Stop the engine and remove the ECM fuse.

4. Remove all injectors from cylinder head.

CAUTION

Be careful that foreign materials do not intrude

through the injector installation hole.

5. Crank the engine to remove the foreign materials from

cylinders.

6. Install compression gauge adaptor (09353-45100) to-

gether with gasket and then, connect the compression

gauge.

09353-45100

Compression pressure gauge

SUDEM7015L

7. Crank the engine and measure the compression pres-

sure.

CAUTION

a. Take care that fuel is not injected.

b. Since compression pressure varies depend-

ing on the engine speed, be careful in mea-

suring.

c. Since worn amounts of each cylinder are dif-

ferent, measure the pressure at all cylinders.

8. Measure the compression pressure of all cylinders to

see if all compression pressures are within the limit.

Items

Stan-

dard

Limit

Correc-

tive ac-

tion

Each

cylinder

26kg/cm² 20kg/cm² Check

Com-

pression

pressure

(200rpm)

Differ-

ence be-

tween

cylinders

―

4kg/cm² Check

9. If the compression pressure difference of any cylinder

exceeds the limit, fill some engine oil through injector

hole and measure the compression pressure of the

cylinder again.

1) If the compression pressure increases, it indi-

cates that the piston, piston ring or cylinder wall

is worn or damaged.

2) If the compression pressure does not increase, it

indicates that valve is stuck, valve contact is poor

or pressure is leaking through the cylinder head

gasket.