@Senior Leigh | 老李 Thanks in advance for putting together this wonderful site and video. I'm planning to replace the spark plug in my 2016 e350. I ordered a set of plug from FCP euro. Do you know what's the proper gap for the spark plug? The spark plug was shipped with the transmission fluid and got crash. I just want to make sure the plug has the proper gap before install.
Thank you, and your E350's engine should be M276 DE35, and the spark plugs should be Bosch ZR6SII3320. The gap size is 0.7 mm. More detail on https://www.boschautoparts.com/p/double-iridium-spark-plugs-zr6sii3320-