How do mechanics replace spark plugs? Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will: Have the correct spark plugs on hand for your vehicle ; Pull any diagnostic trouble
My car just turned 40K miles on original plugs. It runs great and gas mileage is same as always. There is never a misfire or hard start. Do I really need to change spark plugs if everything is running great. It must be a money making thing for the dealership. Just wondering how difficult it is to change them DIY or is it just better to take it in when it is due for the change. I've done it on other vehicles but just curious if anyone out there has done their own and could provide any hints or details, thanks. Anyway they're under the engine cover, it pops right off if you lift it. Then just unplug, unscrew, and pull the 4 coil packs out. The plugs are inside the hole left by the pulled coil packs, you'll need a 5/8 spark plug socket and extender to unscrew and extract the plugs. See below images. Order Fiat 500L Spark Plug online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.Fiat 500 Spark Plug Replacement | Cost & Service | AutoNation Mobile Service Common Car Repairs Spark Plugs Replacement Common Car Repairs Spark Plugs Replacement 2 Spark Plug Replacement FAQs 1.4L L4 c Gucci • 83,690 miles 1.4L L4 • 66,669 miles 1.4L L4 • 148,000 miles 12-Month | 12,000-Mile Warranty , you may need to remove repairs.epPjPMt.