Want this question answered?
Plug gap is .040"
The firing order for a 1991 Isuzu Trooper 2.8 liter 6-cylinder is 1, 2, 3, 4, 5, 6. The spark plug gap is .045 (in thousandths of an inch).
The gap should be .040
what is the setting of the spark plug gap for a 1991 chev caprice .035
gap is .040
The 1991 Mercury Marquis spark plug gap is .034. Most spark plugs will be pre-gapped by the spark plug manufacturer.
2.3L & 2.6L it is .040 in.
set you gap at .031
.031 is the correct gap for this vehicle
0.038-0.043
31 gap according to my 1991 corolla manual.32 or 31
( .054 inch ) spark plug gap