If you have the wrong leads going to the wrong spark plugs, then you will have a spark when the cylinder is somewhere other than where it should be, which is at the top of the compression stroke ready to drive the piston down and provide power. If you can start your car, it will be running very rough, have no real power at all and your gas mileage will be measured in gallons per mile. You are also running the risk of serious internal damage to the very expensive valves, so I suggest you fix it immediately.
I'd suspect a bad spark plug at first. Which could be the GAP setting is wrong or the plug itself is bad. There can be other more expensive issues going on, but I'd start cheap and work up.
the coil is bad
The timing is too low or it has the wrong spark plugs in it.
Wrong gap, wrong plug, poor groound when you are looking at the spark,
I had the same problem and went ahead and replaced cylinder 1 coil and all the spark plugs and it worked.
That's not really what's going on. The coil makes the spark, the distributor distributes the spark to the correct plug. If the distributor is not in the correct position, the spark does not go to the correct plug, or goes to the correct plug at the wrong time.
On mine it had a bad carbarator and water in its spark plug.
It is most likely your spark plugs. Check those out, sounds like your losing power.
If is has spark, it could be a faulty fuel injector.
This engine only has four spark plugs. this is wrong the 8 spark plugs going in the only head that has the engine 2.3. the oldest mustang have different engine
Most likely you are in need of a tune up. When distributor caps and spark plug wires get old, they can leak and in wet or damp weather, the spark intended for one cylinder can jump to the wrong terminal under the cap or from one plug wire to an adjacent wire, sending spark to the wrong cylinder at the wrong time. If it won't start and it's dark,sometimes you can look under the hood and see the spark jumping around where it doesn't belong (to ground-the motor). Change the cap, rotor, wires, and plugs and you should be fine.
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.
Something wrong with spark plugs or the wires maybe...Make sure the spark plug is connected to the power source. If so, you might want to check it and fix or replace it if somethings wrong.
wrong plug gap, wires on wrong, cap is cracked, timing moved when you put cap on
check the coil , it could be going bad.
it means there is something wrong with the spark plugs cause they provide the energy for the engine
Usually that means that your spark plugas are bad, I'd get a tune-up
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.
spark plug wires on wrong take them off and rearrange them til it runs better
Misfire Answer Faulty: spark plug, spark plug wire, ignition coil, ignition module, fuel injector are the most common. Coolant leaking into a cylinder is another. Internal engine problems such as burnt valve, broken valve spring, bent push rod, worn rings
the computer will not switch on. May be the SMPS fail leading to a huge spark.
No fuel is getting to the cylinder, if there is good spark, assuming you checked the plug, wire and distrubitor. If spark is good right at the plug, then the intake valve is stuck shut.
assuming it is a car that should be capable of going over 40mph it could be many things: - bad gasoline - bad spark plugs and or spark plug wires - clogged air filter - transmission problems - engine problems (compression issue, dead cylinder) - clogged fuel filter - damaged catalytic converter (restricted exhaust)
Two of the wires are mixed up. The result is that two cylinders are attempting to fire at the wrong time. It can result in the popping sound when the cylinder fires at the wrong time.