Ignition System; Electrical System - Toyota Tundra Quick Reference Manual

6-1. Specifications

Ignition system

Spark plug
4.0 L V6 (1GR-FE) engine
Make DENSO
NGK
Gap
4.6 L V8 (1UR-FE) and
5.7 L V8 (3UR-FE, 3UR-FBE)
engines
Make DENSO
Gap
NOTICE
■
Iridium-tipped spark plugs (4.6 L V8 [1UR-FE] and 5.7 L V8 [3UR-FE,
3UR-FBE] engines)
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.

Electrical system

Battery
Open voltage at
68°F (20°C):
Charging rates
662
K20HR-U11
LFR6C11
0.043 in. (1.1 mm)
SK20HR11
0.043 in. (1.1 mm)
12.6 ⎯ 12.8 V Fully charged
12.2 ⎯ 12.4 V Half charged
11.8 ⎯ 12.0 V Discharged
(Voltage checked 20 minutes after the
key is removed with all the lights
turned off)
5 A max.
I n f o r ma t i o n P r o v i d e d b y :