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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 103 (ENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURES)PRELIMINARY INSPECTION & ADJUSTMENTSMECHANICAL INSPECTIONCOMPRESSION
2004 Toyota Matrix XR, FWD, Standard

Mechanical Inspection: Compression

2004 Toyota Matrix XR, FWD, StandardSECTION Compression
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Warm engine to normal operating temperature before checking compression. Ensure battery is fully charged. Remove ignition coils and spark plugs. On all vehicles except GX470, see IGNITION SYSTEM in REMOVAL & INSTALLATION - EXCEPT GX470 article. On GX470, see IGNITION SYSTEM in REMOVAL & INSTALLATION - GX470. Check engine mechanical condition with a compression gauge, vacuum gauge, or engine analyzer with throttle fully open. See engine analyzer manual for specific instructions. See COMPRESSION SPECIFICATIONS  table. Install and tighten spark plugs to 13 ft. lbs. (18 N.m).

COMPRESSION SPECIFICATIONS

Application Specification
Normal Compression Pressure
ES300 & RX300 218 psi (15.3 kg/cm2 )
GS300, IS300 & LX470 192 psi (13.5 kg/cm2 )
GS430, GX470, LS430 & SC430 178 psi (12.5 kg/cm2 )
Minimum Compression Pressure
ES300 & RX300 145 psi (10.2 kg/cm2 )
GS300 & IS300 156 psi (11.0 kg/cm2 )
GS430, GX470, LS430, LX470 & SC430 142 psi (10.0 kg/cm2 )
Maximum Variation Between Cylinders
Except ES300 & RX300 14 psi (1.0 kg/cm2 )
ES300 & RX300 15 psi (1.1 kg/cm2 )
RENDER: 1.0x

NO RELATED

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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.