Hyundai Creta: General Information / Compression test

Compession Pressure Inspection
  
If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure.
1.
Make sure the oil in the crankcase is of the correct viscosity and at the correct level and that the battery is correctly charged. Operate the vehicle until the engine is at normal operating temperature. Turn the ignition switch to the OFF position.
2.
Remove the engine cover.
3.
Remove the ignition coil.
(Refer to Engine Electrical System - "Ignition Coil")
4.
Remove the spark plugs.
Using a 16mm plug wrench, remove the 4 spark plugs.
(Refer to Engine Electrical System - "Spark Plug")
5.
Check the cylinder compression pressure.
(1)
Insert a compression gauge into the spark plug hole.

(2)
Set the throttle plate in the wide-open position.
(3)
While cranking the engine, measure the compression pressure.
  
Always use a fully charged battery to obtain engine speed of 250rpm or more.
(4)
Repeat step 1) through 3) for each cylinder.
  
This measurement must be done in as short time as possible.
Compression pressure
Standard : 1225.83 kPa (12.5 kg/cm², 177.79 psi) (200~250 rpm)
Minimum : 1078.73 kPa (11.0 kg/cm², 156.46 psi)
Difference between each cylinder :
98 kPa (1.0 kg/cm², 14 psi) or less
(5)
If the cylinder compression in one or more cylinders is low, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat step 1) through 3) for cylinders with low compression.
If adding oil helps the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
If pressure stays low, a valve may be sticking or seating is improper, or there may be leakage past the gasket.
6.
Install the spark plugs.
(Refer to Engine Electrical System - "Spark Plug")
7.
Install the ignition coil.
(Refer to Engine Electrical System - "Ignition Coi")
8.
Install the engine cover.
Special service tools
Special Service Tools Tool Name / Number Illustration Description Crankshaft front oil seal installer 09455-21200 ...

Troubleshooting
Troubleshooting Symptom Suspect area Remedy Engine misfire with abnormal internal lower engine noises. Loose or improp ...

Other information:

Hyundai Creta GS 2014-2019 Service Manual: Cylinder Block: Repair procedures
Disassembly    • Use fender covers to avoid damaging painted surfaces. • To avoid damaging the cylinder head, wait until the engine coolan ...

Hyundai Creta GS 2014-2019 Service Manual: CVVT & Camshaft
Components and components location Components 1. Exhaust camshaft 2. Intake camshaft 3. Exhaust CVVT 4. Intake CVVT 5. Camshaft bearing cap 6. Camshaft front bearing cap 7. O-ring 8. OCV (Oil Control Valve) adapter Description and op ...

© 2017-2019 www.hcrmangs.com