spark firing order on 1990 Isuzu Trooper

what is the firing order of the spark plugs on the 2.5 L 4-cylinder engine Isuzu Trooper 1990

2 answers
You can see the firing order for the 2.6L SOHC 4 cylinder engine on your truck here; http://bit.ly/cEuOHq
what is the firing order of the spark plugs on the 2.5 L 4-cylinder engine Isuzu Trooper 1990