View Full Version : firing order for dizzy
02-14-2007, 04:45 PM
i just installed a hei msd dizzy on my 1976 cherokee 360 and i was lookinf at my haynes manual and the picture of which spark plug wire comes of the distributor where is different than what i have under the cap. I went clockwise off of the clip that holds the cap on. Does it matter that they are not the same as long as the firing order is the same? Sorry this is confusing wording. If anyone has a picture of their msd that they could label the wires on i would much appreach it. thanks
02-14-2007, 05:06 PM
but here is the TFI setup on my '90. Number 1 is directly below the "D" in MSD and it goes clock-wise from there 18436572.
02-14-2007, 05:35 PM
thats how at looks on mine too and same firing order so ill run with it think the diagram in the manual must have been wrong.:D
02-14-2007, 06:12 PM
Makes no differance where you start the firing order on the Dizzy, provided that when #1 piston is at TDC the rotor is pointing to the terminal you have started the firing order on.
02-14-2007, 08:38 PM
thats what i was guessing but wasnt sure. To get number one piston to tdc do you crank the engine without the plug in till it gets there? I drove it a couple of miles everything seems okay if the firing order was moved ie rotor not pointing to number one piston what would the symptoms be ?
thanks for the help.
02-15-2007, 08:56 AM
Do it by hand and be sure you are on the compression stroke for the #1 cylinder. Like everyone else said, it doesn' t matter which terminal you start the firing order, as long as you put the #1 wire on the terminal the rotor is pointing to while the #1 cylinder is TDC on the compression stroke.
I've changed mine around so the vacuum advance canister doesn' t hit the PS belt.
The only Jeep I'm aware of where the wire position matters is the ones with the odd-fire V6.
02-15-2007, 10:58 AM
since ive never done this before how do you move it by hand ?
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