Spark Plug Firing Order

[Supra 80]

I'm just curious as to what firing order people have their spark plugs the TSRM and my Haynes both say 1-5-3-6-2-4 but I don't remember where I found it but I found another that is 1-6-3-4-2-5 when I attatch them the "correct" way my car runs like crap, rough idle when it does, backfires just very bad. When I changed my firing order to what I believe is the wrong one my car runs much better its smoother and idles a little sometimes. Just curious if anyone has any ideas what might be going or if maybe bot firing orders are wrong.

 

[jetjock]

Firing order is 153624. The plugs fire in pairs because it's a waste spark system. If you place the high order plugs over the low order ones in a waste spark system you get the pairs: 1-6, 5-2, 3-4.

Does that help or confuse you more?

 

[Supra 80]

Yeah that helped thanks. I actually knew that but it was snowing and I was getting frustrated because I forgot to pay attention when I took the wires off the coil packs.

 

[Fozbo]

For reference sake, 1-6-3-4-2-5 is the order they plug into the coil pack, 1-5-3-6-2-4 is the physical firing order of the engine.

 

[supraguy31]

Left Coil 1-6
Middle Coil 3-4
Right Coil 2-5

Dont get this engine confused as I did once and it idled like shit for a week or so until I got clearification.

 

[mkIIIman089]

Dont get this engine confused as I did once and it idled like shit for a week or so until I got clearification.

Since, you know, other engines run just perfectly with spark plugs/coils wired incorrectly.