![]() Parts & Components > Browse by Engine > Ford EcoBoost Engines > 2. Parts & Components > Browse by Engine > Ford EcoBoost Engines > 2.0L Ford EcoBoost Engines Shop Performance > Focus RS/ST Performance > Focus RS Performance Parts If you have a Quantum engine, be sure to check the Code Date before doing any engine maintenance. Shop Performance > Focus RS/ST Performance > Focus ST/RS Power Flathead Engine Spark Plugs & Gaps Also known as L-head or side valve engines, these engines are commonly used for walk behind lawn mowers and pressure washers. They work great and they all came gapped properly for my configuration. GAPPING Since the gap size has a direct effect on the voltage necessary to jump the gap and ionize (light) the air-fuel mixture, careful attention is required. Parts & Components > Browse by Manufacturer > Mountune Racing Engines Buy Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4). ![]() Shop Performance > Focus RS/ST Performance ![]() Use your spark plug gap tool to adjust the gap. If the tool runs through the gap without touching the electrodes, the gap is too big and must be narrowed. If you can’t get the correct feeler gauge through the gap, the gap needs to be widened. Parts & Components > Browse by Components > Ignition & Electrical Systems Select the correct measurement on your gap gauge or feeler gauge. Shop Performance > Focus RS/ST Performance > Focus RS Performance Parts > RS Power Upgrades Mountune is my favorite supplier for these pre-gapped plugs!īrowse for more products in the same category as this item: After pulling my stock plugs out they still were very clean and still "looked" fine so I wasn't sure I'd see any difference however seat of the pants tells me the car is a bit more "zippy".ījorn Vasenden from verdi, NV United States I put 70K miles on my original stock plugs. Vince Rinner from Placentia, CA United States Both measures improve how well your engine runs. In addition, having the correct gap between your spark plug electrodes ensures that the spark lasts as long, and is as strong, as your engine manufacturer intended. Was having some interesting trouble with fluctuating idle at a stop after filling up in my 18 ST3. Why do your spark plugs need to be clean and gapped Clean spark plug electrodes will create a stronger spark. Noticeably smoother idle, more power from a complete stop. Perfectly gapped, incredibly easy install (aside from my intake being in the way). Mos Amiri from Winston Hills, NSW Australia 0 of 0 people found the following review helpful:Ĭarlo Delgado from Las Vegas, NV United States
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