On a 2001 Ford Ranger , 2.5 liter four cylinder engine :
The spark plug firing order is ( 1 - 3 - 4 - 2 )
The spark plug wires connect to the two coil packs :
( 3 - 1 ) Spark plug wires on exhaust side ( passenger side of engine )
( 2 - 4 )
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( 4 - 2 ) Spark plug wires cross over top of engine to intake side ( driver side )
( 1 - 3 )
From the front of the engine, the spark plugs are numbered 1-2-3-4. The firing order is 1-3-4-2. - Haynes Repair Manual #36071, 1993-2005 Ford Ranger Pickups.
Yes, when changing spark plugs it is a good idea to change all eight so the firing will be even.
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The firing orders it
gmc jimmy1989 firing order spark plugs
its 5.2.3.6.4.1
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Yes, you still need to make sure that the plugs are firing when it's their turn.
Most likely bad plugs or firing order isn't right, i would start by checking the order you got the plugs and if that's not it check the plug wires.
No the spark plug wires have to be in firing order
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