How to change spark plug wires/fuel injectors?

I have a 4cyl and it just started misfiring. How to I change the wires? And how do I replace the fuel injectors? Can't find a write up anywhere

 

Already replaced the spark plug and coil...

 

They do not have " Spark Plug Wires " in the traditional sense. They have coil over the spark plugs one for each.

Why do you think you need to replace the fuel injectors? They should be good for the life of the truck.

Have you checked for codes? Do you have a Check Engine Light?

 

I have a check engine light and code p0301. I do have a pretty bad exhaust leak that I'm going to fix tonight, could that be causing it?
I am solid with fabrication but when it comes to engines I'm dumber than a door

 

This is from the Factory Service Manual:

Codes:
P301, P302, P303, P304 - Misfiring of specific cylinder detected (2 trip detection logic)

Possible issues:

• Open or short in engine wire harness
• Connector connection
• Vacuum hose connections
• Ignition system
• Injector
• Fuel pressure
• Air induction system
• Mass Air Flow (MAF) meter
• Engine Coolant Temperature (ECT) sensor
• Compression pressure
• Valve clearance
• Valve timing
• PCV valve and hose
• PCV hose connections
• ECM

Monitor Strategy:

Related DTCs
P0300: Multiple cylinder misfire
P0301: Cylinder 1 misfire
P0302: Cylinder 2 misfire
P0303: Cylinder 3 misfire
P0304: Cylinder 4 misfire

Required Sensors/Components (Main) Injector, Ignition coil, Spark plug

Required Sensors/Components (Related) Crankshaft, Camshaft, Engine coolant temperature and intake air temperature sensors and Mass air flow meter.

Frequency of Operation Continuous
Duration 1,000 to 4,000 crankshaft revolutions: Emission related misfire
200 to 600 crankshaft revolutions: Catalyst damaged misfire
MIL Operation 2 driving cycles: Emission related misfire
MIL flashes immediately: Catalyst damaged misfire

 

Awesome thank you. I should replace the pcv valve but I have no idea where that is

 

It is in the valve cover Rear Passenger side corner.

 

Honestly you would probably save money by just taking it to a shop and letting them diagnose it. you are going to spend just as much randomly throwing new parts at it...