To avoid damage because of the short length of the high-tension lead that connects the no. 4 cylinder spark plugs, remove the coil packs from the cam cover by removing their mounting bolts with the ratchet, 3" extension and 10 mm socket. Begin by disconnecting the low-tension wire plugs from the sockets at the ends of the coil packs and then disconnect the high-tension wires from their associated spark plugs by pulling the plug boots (not the wires) straight up. The electrode gap is the same as above, 1.0-1.1 mm (.040"-.043").įor safety, first disconnect the negative battery cable. Don't substitute with a nickel alloy type here. This is an extended projected tip plug rather than the projected tip type used in the FS-DE, and one heat range colder (a 6 rather than a 5 in the plugs nomenclature). The OEM specified plug for the FS-DET (MSP) turbo engine is the NGK Laser Platinum PZFR6F-11 with a platinum center electrode and a platinum disc welded onto the ground electrode. Precious metal (platinum and iridium) electrode plugs are also available for either of the above applications. An excellent online source for our spark plugs is: for the extended projected tip plug the OEM recommended plug has a different Mazda part no. 0000-18-F287) and checking the gap with my wire gauge found all 4-plugs to be right on spec. I purchased my plugs from Mazda (part no. The electrode gap for either type is OEM specified as 1.0-1.1 mm (.040"-.043"). Alternatively, if you're following TheMAN's recommendation for substitution of an extended projected tip type (as I did), substitute the NGK V-Power NGK ZFR5F-11 (which is OEM for the 1.6 L ZM-DE engine) in place of the FS-DE factory recommendation. Because of this configuration, the system requires only two spark plug leads.Īccording to the FSM, the OEM specified plug for the FS-DE normally aspirated engine is the NGK V-Power BKR5E-11 or the Denso K16PR-U11 with nickel alloy (commonly, but erroneously, referred to as copper) electrodes. Each high-tension wire has a similar plug cap, complete with boot (without the spring), integral with the wire. Underneath each coil pack, is a spring which applies pressure to a plug cap that physically and electrically connects the coil pack to the spark plug. 4 cylinder spark plug and its high-tension lead (the long one) connects to the no. The second coil pack is similarly mounted over the no. Its high-tension lead (the short one) connects to and energizes the no. 2 cylinder and is held in place on the cam cover with two mounting bolts. One coil pack (incidently, Mazda refers to them simply as ignition coils) is mounted over, and energizes, the spark plug for No. See photos below for a detailed view of the layout. There are two coil packs and each has a low-tension connector at one end and a high-tension spark plug lead at the other end. Spark plug anti-seize lubricant and dielectric tuneup grease (I used Permatex brand) 3" long extension attached to a 10 mm socket to remove and install the coil pack mounting boltsĦ" extension attached to a 5/8" (16 mm) spark plug socket to remove and install the spark plugs
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