low compression in one of your cylinders
Changing the plugs and plug wires correctly has nothing to do with nor can it cause an oil leak.
If the old plugs and wires were bad I would expect the engine to start and run better.
wrong plug gap, wires on wrong, cap is cracked, timing moved when you put cap on
the next step would be the coil pack
first up i would check to make sure all plug wires are installed to the correct plugs 2 wires swapped to out of sequence plugs will cause this misfire
You have connected the wires to the wrong plugs.
If by "not to crank" you mean the engine won't turn over, then the problem lies with the battery and/or starter cables. If you mean "not to start", then you need to ensure the plugs are gapped correctly (new plugs are not always pre-gapped) and that the wires are seated and routed correctly. Inspect the area near the plugs and wiring in case you may have disconnected something while changing them out.
This could be bad spark plugs or plug wires
I would check the plug wires to see if they are installed in the correct locations.I would check the plug wires to see if they are installed in the correct locations.
I would replace the spark plugs after 50K, the wires and plugs again at 100K.
spark plugs need changing- ignition wires could be changed- put octane boost into your gas, or fuel injection cleaner.
you have 2of the plug wires on the wrong plugs or distributor cap