Kia Carens. Manual — part 43

2001 > 1.8L DOHC >

COMPONENT

Engine Mechanical System

Cylinder Block - Piston and Connecting Rod

Engine Mechanical System

2001 > 1.8L DOHC >

INSPECTION

Piston cooling jets

1. Apply compressed air to each piston cooling jet valve at (A) and verify that air passes through piston cooing

jet valve at (B). if air dose not pass replace piston cooling jet valve.

Air pressure : 24.2~32.7psi (166.8~225.6kpa, 1.7~2.3kg/cm²) maximum

2. Check piston cooling jet nozzle for clogs. Replace nozzle if necessary.

Piston

Replacing a piston also requires replacing piston ring.

1. Check circumference of damage, scoring, or unsual wear patterns. Replace piston as needed.

2. Check outside diameter of each piston at a 90° right angle to piston pin, 0.846in (21.5mm) below oil ring

land's lower edge.
Piston diameter

Bore size

TBD

standard

3.1872~3.1879in (90.954~80.9720mm)

Standard + 0.010in (0.25mm)

3.197~3.1977in (81.204~81.222mm)

Standard + 0.020in (0.50mm)

3.2069~3.2076in (81.454~81.472mm)

If piston is collapsed or ball mouthed, replace piston.

3. Check piston-to-cylinder wall clearance by subtracing piston diameter from the large cylinder subtracing

piston diameter from the largest cylinder wall diameter at each cylinder.

Clearance : 0.00157~0.0021in (0.040~0.053mm)
Maximum : 0.006in (0.15mm)

4. If clearance exceeds maximum, replace piston or rebore cylinders and fit oversized pistons to all cylinder.

Piston ring

1. Insert a new piston ring into a piston ring groove amd check piston ring-to side clearance.

Ring

Standard clearance

Maximum clearance

Top

0.002~0.003in (0.04~0.08mm)

0.006in (0.15mm)

Second

0.001~0.003in (0.03~0.07mm)

0.006in (0.15mm)

2. If clearance exceeds the maximum replace piston.

3. Inspect piston rings for damage, abnormal wear or breakage.

4. Replace piston rings if necessary.

5. Insert piston ring into cylinder by hand.

6. Square ring in cylinder by inverting a piston into cylinder and pushing ring to the bottom of its travel in

cylinder.