90 chevy lumina back firing and runs sluglish

What is the firing order on Toyota t100 3 4 4wd Google Search
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SOURCE:distributor cap firing order 1993 chevy cheyenne truck v6
Firing order is 1-6-5-4-3-2 cyls. # 1-3-5 on drivers side front to back and cyls. # 2-4-6 passenger side front to back.

Firing order is 1-8-4-3-6-5-7-2, on passengers side is 2-4-6-8, Drivers side 1-3-5-7, #1 cyl is just to the right of front of the cap looking from front to back. Good-Day!

Firing order is 1-2-3-4-5-6 , engine numbering is 1-3-5 towards the back and up front is 2-4-6, coil numbering from left to right is 1-4, 6-3, 2-5. This is for your year of engine I hope this helps you!

The firing order is 1-2-3-4-5-6
Cyl #1 is front left when looking at engine front to back
left coil pack connects to cyls. 5-2
center coil pack connects to cyls. 3-6
right coil pack connects to cyls. 4-1
It doesn't matter which connector on the coil you use just that the cylinder is connected to the proper coil pack (the coil fires both plugs at the same time, twice per each full 4 stroke cycle)
1998 Chevrolet Lumina
3.1 liter V-6 VIN "M"

Back firing is usually an indication of a timing issue

The timing chain is most likely worn & jumped a couple
of teeth or the distributor was installed wrong,if you recently
had work done

1-8-4-3-6-5-7-2 Distributor rotates clockwise vehicle , #1 cyl is on left side of engine

1-2-3-4-5-6 The odd cylinders 1-3-5 are on the firewall side, the even cyl. are out to the radiator. Number 1 cylinder is the pulley side.

You didn't say what size engine you have, 4cyl. or 6 cyl.
The 4 cyl. is--- 1-3-4-2
The 6 cyl 3.1 is---- 1-2-3-4-5-6----- on the coil pack under the exhaust manifold is----- 1-4-6-3-2-5. If neither of these doesn't work, then you have a different engine.

hi im wes the firing order is 123456 1 3 5 is on passanger side 2 4 6 is on drivers side

Firing order is 1-6-5-4-3-2 cyls. # 1-3-5 on drivers side front to back and cyls. # 2-4-6 passenger side front to back.