spark plug firing order

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Dwave: G-Command Sergeant Major; Posts: 207; Joined: Thu Aug 09, 2007 6:11 am; Location: suburb s.w of Philadelphia, Pennsylvania

spark plug firing order

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Postby Dwave » Mon Sep 12, 2011 2:04 pm

i was able to find know the firing order for the distributor, but i wanted to be certain the wires were corrected to the right plug. Is the order for the spark plugs 1 3 4 2 ?

Dave
Former Air Force C141-B Loadmaster
42 Willy's MB

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Re: spark plug firing order

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Postby artificer » Mon Sep 12, 2011 2:19 pm

Nearly every modern [& Jeep is modern?] four cylinder engine firing order is 1-3-4-2 with 1 @ the radiator or front end. The distributor rotor must be in correct position relative to the piston & valves of the cylinder to be firing.
e.g. No. 1 TDC compression you need to have rotor pointing to No 1 plug wire & points just cracking.

John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.

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Chuck Lutz: Gee Addict; Posts: 26829; Joined: Wed Jun 28, 2006 7:00 am; Location: Jeep Heaven

Re: spark plug firing order

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Postby Chuck Lutz » Mon Sep 12, 2011 2:49 pm

1 -3 - 4 - 2 and the dizzy turns counterclock wise so install them in that order CCW.

#1 would be at the 5:30 position so the oiler is on a slight angle.

: Engine Mid Late 42 GPW Side.jpg (145.52 KiB) Viewed 4382 times

Chuck Lutz

GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947

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