2003 Nissan Altima Owner's Manual - Page 229
2003 Nissan Altima Manual
Page 229 highlights
SPECIFICATIONS ENGINE Model Type Cylinder arrangement Bore x Stroke Displacement Firing order Idle speed M/T A/T (in "N" position) Ignition timing (degree B.T.D.C. at idle speed) CO % at idle Spark plug Spark plug gap (Nominal) Camshaft operation QR25DE Gasoline, 4-cycle, DOHC 4-cylinder in-line in (mm) 3.5 x 3.9 (89.0 x 100.0) cu in (cm3) 151.82 (2,488) 1-3-4-2 VQ35DE Gasoline, 4-cycle, DOHC 6-cylinder, V-block, Slanted at 60° 3.760 x 3.205 (95.5 x 81.4) 213.45 (3,498) 1-2-3-4-5-6 See the "Emission Control label" on the underside of the hood. Standard PLFR5A-11 Hot PLFR4A-11 Cold PLFR6A-11 in (mm) 0.043 (1.1) Timing chain PLFR5A-11 PLFR4A-11 PLFR6A-11 0.043 (1.1) Timing chain The spark ignition system of this vehicle meets all requirements of the Canadian Interference-Causing Equipment Regulations. Technical and consumer information 9-7