Spark Plug Replacement
Don’t let the diagram fool you, this little sucker is not a complex job. You’ll know if you have a faulty spark plug as the idle will be rough/lumpy, and the start-up ignition might seem different and/or longer than before.
Never use a spark plug repair kit, these are often more expensive than the plugs themselves and it’s far safer and more methodical to just buy new plugs. They’ll often run you anywhere from a few dollars, to maybe $5-10 each, dependant on vehicle. Check with your local motor factors/store on which model goes on your vehicle.
Usually housed on the top of the engine block, under some sort of screw-pinned plastic trim, you’ll need to disconnect the HT leads or distributors first. This is usually just a pull-job or maybe a bolt. Always replace all the plugs, use your deep socket to take out the old ones.
Top tip: when chucking the new ones in don’t over tighten as this can snap the insulation above the hex nut, but make sure it’s good and firm. You’ll get a feel for it.
