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Home >> Isuzu >> 1989 >> I-Mark LS >> Repair and Diagnosis >> Engine Performance >> System >> Basic Testing - EFI >> Idle Speed & Ignition Timing

Idle Speed & Ignition Timing

For adjustment procedures, see D - EFI ADJUSTMENTS article.

IGNITION TIMING (Degrees BTDC @ RPM)

Application Base Timing
Amigo & Pickup 2.6L 12@900
I-Mark
1.5L (Turbo) 15@950
1.6L 16@900
Impulse 12@900
Trooper II
2.6L 12@900
2.8L 10@800
IDLE SPEED SPECIFICATIONS (1)

Application Idle RPM
Amigo & Pickup 900
I-Mark
1.5L (Turbo) 950
1.6L 900
Trooper II
2.6L 850-950
2.8L (1) 650-750
(1) Use idle speed on underhood emission label, if idle speed differs from this specifcation.