LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 1999 >> Q45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - Service & Adjustment Specifications) >> Mechanical Checks >> Engine Compression
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Compression

WARNING: This page is about a different car, the 2000 Infiniti Q45 and 2000 Infiniti G20. However, it is still accessible from the selected car via links, so may be relevant.

Ensure battery is fully charged. Check engine compression with engine at normal operating temperature, at specified cranking speed, all spark plugs removed and throttle wide open.

COMPRESSION SPECIFICATIONS (1)

Application psi (kg/cm2 )
G20
Standard 185 (13.0)
Minimum 156 (11.0)
Maximum Variation Between Cylinders 14 (1.0)
Q45
Standard 186 (13.1)
Minimum 144 (10.1)
Maximum Variation Between Cylinders 14 (1.0)
(1) With engine at 300 RPM.