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Normal
You have tried swapping in a new CRANK POSITION SENSOR, right? The crank shaft and the cam shaft are connected via the timing chain (or belt, in some cases) and, as the engine wears (or gets old) the teeth of the gears get worn down, and the chain stretches. Eventually, the chain 'skips' a tooth or two, and the chain has 'jumped timing'. What that means, is that the spark plug is no longer in sinc with the opening and closing of the valves. So, it may be firing on an open combustion chamber, instead of when the engine is on the compression stroke. The easiest way to check, is to pull the number one cylinder, and slowly have a buddy crank (use the key) the motor over as you keep one finger in the spark plug hole. As the compression cycle goes, it'll force air past your finger. Meanwhile, you're watching the timing mark on the timing gear (crank pulley) to make sure you're coming up to top dead center. Then cross reference the distributor to see if the rotor (of the cap & rotor) is also pointing at the number one plug wire.
You have tried swapping in a new CRANK POSITION SENSOR, right?
The crank shaft and the cam shaft are connected via the timing chain (or belt, in some cases) and, as the engine wears (or gets old) the teeth of the gears get worn down, and the chain stretches. Eventually, the chain 'skips' a tooth or two, and the chain has 'jumped timing'. What that means, is that the spark plug is no longer in sinc with the opening and closing of the valves. So, it may be firing on an open combustion chamber, instead of when the engine is on the compression stroke.
The easiest way to check, is to pull the number one cylinder, and slowly have a buddy crank (use the key) the motor over as you keep one finger in the spark plug hole. As the compression cycle goes, it'll force air past your finger. Meanwhile, you're watching the timing mark on the timing gear (crank pulley) to make sure you're coming up to top dead center. Then cross reference the distributor to see if the rotor (of the cap & rotor) is also pointing at the number one plug wire.
