Hyundai Santa Fe: General Information. Repair procedures - General Information - Engine Mechanical SystemHyundai Santa Fe: General Information. Repair procedures

Compression Pressure Inspection

If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure.
1.
Warm up and stop engine.
Allow the engine to warm up to normal operating temperature.
2.
Disconnect the injector extension connector (A) and ignition coil connectors (B).
3.
Remove ignition coils (A).
4.
Remove spark plugs.
Using a 16mm plug wrench, remove the 4 spark plugs.
5.
Check cylinder compression pressure.
(1)
Insert a compression gauge into the spark plug hole.
(2)
Fully open the throttle.
(3)
While cranking the engine, measure the compression pressure.
Always use a fully charged battery to obtain engine speed of 200 rpm or more.
(4)
Repeat steps (1) through (3) for each cylinder.
This measurement must be done in as short a time as possible.
Compression pressure :
1,324 kPa (13.5 kgf/cm², 192 psi) / 200 ~ 250 rpm
Minimum pressure :
1,177 kPa (12.0 kgf/cm², 171 psi)
Difference between each cylinder :
100 kPa (1.0 kgf/cm², 15 psi) or less
(5)
If the cylinder compression in 1 or more cylinders is low, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat steps (1) through (3) for cylinders with low compression.
A.
If adding oil helps the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
B.
If pressure stays low, a valve may be sticking or seating is improper, or there may be leakage past the gasket.
6.
Reinstall spark plugs.
7.
Install ignition coils.
8.
Connect the injector extension connector and ignition coil connectors.
9.
Some DTC's may exist after the inspection test and may need to be manually cleared with GDS.

    Specifications - Revised
    Specifications Description Specifications Limit General Type In-line, DOHC 　 Numbe ...

    General Information. Troubleshooting
    Troubleshooting Symption Suspect area Remedy Engine misfire with abnormal internal lower engine noises. Worn crankshaft bearings Lo ...

    See also:

    Variable Intake Solenoid (VIS) Valve. Schematic Diagrams
    Circuit Diagram ...

    Seat belt precautions
    WARNING All occupants of the vehicle must wear their seat belts at all times. Seat belts and child restraints reduce the risk of serious or fatal injuries for all occupants in the event of a coll ...

    Rear seat folding from outside
    Pull the rear seat back folding lever out. The rear seat back will be folded. If you pull the left side lever (1) out, left side seat back and center seat back will be folded. If you pull the ri ...