What is the Make, Model, Year engine size? 1996 or newer? Engine check light on? What are the OBD codes you pulled?
With the vague information given, you could have anything from bad spark plugs to wires, coils, bad ICM, to a clogged egr valve, to bad gasoline.
SOURCE: 1990 chevy 350 distributor wiring diagram and firing order
The firing order is 1-8-4-3-6-5-7-2.
The distributor rotates in a clockwise direction. The engine must be on the compression stroke on the #1 cylinder. Line up the timing marks. Remove the cap and the rotor should be pointing to approximately the 5 o'clock position.
Good Luck
SOURCE: Engine cylinder mis-fire
standing in front of car cylinder # 1,2,3,4 on the left passenger side and # 5,6,7,8 on right drivers side. in that order for 2000 4.0 jaguar s type
SOURCE: 1997 Ford F150 6 Cyl 4.2 liter Is running rough
have you cleaned the soot from the throttle body assembly,or check what the fuel pressure is while it's running
SOURCE: 1995 chevy g 20 va 5.7 engine runs rough even
You may have picked up some debris and/or water when it ran out of gas. That got sucked up into the filter. Try changing the fuel filter I believe it's located on the right side, just ahead of the rear wheel.
Try that and see if there's any improvment. Hope this helps.
Good luck.
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