by boritz » Wed Mar 02, 2011 3:43 am
Cylinder map:
firewall
5 6
3 4
1 2
fan
In line with merkur's post the DIS (Direct Ignition System) Modules (coils) sitting on the top front of my 1997 engine are arranged like this:
engine
(5 2)(3 6)(4 1)
fan
The DIS modules fire the plugs in pairs 1 & 4, 2 & 5, 3 & 6
(one ignition spark and one 'wasted' into exhaust).
Two cycles thru' the DIS results in firing order 1, 2, 3, 4, 5, 6.
But the DIS layout below is from the Isuzu UBS Series 1992~ manual:
engine
(1 4) (6 3) (2 5)
fan
Either way, the original DIS modules had their respective cylinder number printed on them.
Aussie 1997 3.2V6 SOHC 6VD1 Holden Jackaroo SE (Isuzu Trooper/Bighorn/Monterey) 5-speed manual, rear LSD, front Lokka (manual free-wheel hubs).