SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALENGINE MECHANICAL (H4DO)COMPRESSIONINSPECTION
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans

Engine Mechanical (H4DO): Compression: Inspection

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Inspection
CAUTION: After warming-up, engine becomes very hot. Be careful not to burn yourself during measurement.
  1. After warming-up the engine, turn the ignition switch to OFF.
  2. Make sure that the battery is fully charged.
  3. Check the starter motor for satisfactory performance and operation.
  4. Remove the fuse of fuel pump from main fuse box.
    Fig 1: Locating Fuel Pump Fuse
    G08315480Courtesy of SUBARU OF AMERICA, INC.
  5. Start the engine and run it until it stalls.
  6. After the engine stalls, crank it for five more seconds.
  7. Turn the ignition switch to OFF.
  8. Remove all spark plugs. < Ref. to REMOVAL , Spark Plug. >
  9. Connect the battery ground terminal.
  10. Install the compression gauge to the spark plug hole.
    NOTE: When using a screw-in type compression gauge, the screw should be less than 25 mm (0.98 in) long.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.