No , on the Ford Ranger 2.3 L and 2.5 L with 2 spark plugs per cylinder , 1 spark plug fires on the power stroke of the engine cylinder and the 2nd spark plug fires on the exhaust stroke of the engine cylinder to reduce emissions
do they use the same plugs
The ( 1968 ) Ford Mustang 200 cubic inch straight 6 cylinder spark plug gap is ( .035 inch ) I'm assuming the 1967 was the same ?
in the cylinder head, underneath the spark plug wires, same place they are on EVERY VEHICLE EVER MADE
With a compression gauge! Take spark plug out of cylinder 1, insert gauge into the hole start the engine take note of compression on the dial Engine off Insert the spark plug Do the same for all the other cylinder.
2 spark plugs in the same cylinder improve combustion, reduce emissions and operating reliability of the engine.
First things to look at are your distributor cap and rotor, spark plug for that cylinder, and the spark plug wire to that cylinder. If you can't see anything physically wrong with any of those, try switching the spark plug with one from another cylinder, if the misfire moves to the new cylinder, you'll know the plug is bad. If it wasn't the plug, try switching the plug wire with another of the same or similar length, again, if the misfire moves to the new cylinder, you'll know the wire is bad. If that doesn't help, ask "What could cause misfire?" in the Ask box above or click on the link below to that question and answer. There is a lot of information about misfires there.
The exact Gap size is .045 I have the same car :^)
If you have a no fire situation on #2 cylinder, then the plug is bad, or plug wire is bad, or coil is bad if it has a coil on plug configuration. You may also have a burnt valve, or blown head gasket.
1st check the compression on the rear cylinder to the compression on the front cylinder they should be about the same. 2nd With a spark indicator and the motor running check to make sure you have steady spark if not bad coil. 3rd if both of the above check out ok. replace your intake gasekts the one on the rear is leaking. I assumed that you have already change out your plugs and plug wires.
In any car, if you have a specific cylinder misfire, check the spark plug, spark plug wire, fuel injector, and compression. The computer could also have a problem. You will need to consult the detailed manufacturer's diagnostic chart for that, but the basics remain the same.
Its prob the same as the 2.8 diagram on this link: http://media.photobucket.com/image/spark%20plug%20diagram%20chevy%203.0/roundcarly/chevy_firing_orders.jpg
ngk Bm6a its the same plug