the cylinder numbers (front-to-rear) ................. 1-2-3-4-5-6 the firing order is ............................................... 1-5-3-6-2-4 a diagram of such can be found in the hanyes repair manual check your local autoparts store for it.
A Jeep Wrangler has one spark plug per cylinder.
The diagram.
.035 inch
Count the number of spark plugs, 4=4 cylinder, 6=6 cylinder.
I think it's .035
.035 is the correct gap for your Wrangler's spark plugs. That gap is correct for at least up to 2006 and likely for 2007-2009 as well.
.35 inches .89mm
this is the proper
4 cylinder has only 4 spark plugs and is shorter than the 6.
Its prob the same as the 2.8 diagram on this link: http://media.photobucket.com/image/spark%20plug%20diagram%20chevy%203.0/roundcarly/chevy_firing_orders.jpg
The spark plug diagram for a 1988 Volvo 240DL typically follows the firing order of 1-3-4-2, with the cylinder arrangement as follows: Cylinder 1 is at the front (near the timing belt), followed by Cylinder 3, then Cylinder 4, and finally Cylinder 2 at the rear. The spark plug wires should be connected accordingly: Cylinder 1 to the first terminal, Cylinder 3 to the second, Cylinder 4 to the third, and Cylinder 2 to the fourth. It's always best to consult a repair manual for precise diagrams and specifications.
removed plug wire, remove spark plug, gap new plug to spec. and reinstall. Repeat for every other cylinder. Would recommend replacing plug wires, cap and rotor when replacing spark plugs.