1987 - 1996 F150 & Larger F-Series Trucks1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
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My truck seems to be missing a little when it is idling, so I am just gonna replace the spark plugs to try solve this as it has been around 3 yrs since I had them done last.
I have been looking at the various plugs available but there is so many out there, ranging in price from about $2.99 to $29.99.
Does anyone have any suggestions about what is the best set to get for the price, and why is there such a difference in price of some plugs.
I was mostly happy with the Beldens I got from NAPA for my last tuneup. The only thing extra I would have wished for was to have the wires numbered. That said they were a very good quality part for a daily driver at a reasonable price.
Motorcraft coppers & MDS 8.5 Supercoductor wires. Best wire specs & really last! About $70. but worth it. Especially if your running a 48 or 60K coil!
Double Plat plugs require more resistance to be overcome to initiate spark & make/leave too much heat in the combustion chambers. They don't like their gap stretched & surely don't accommodate side gapping. And I like to look in on my plugs more than once every 50-100K anyway. Also Coppers allow more base timing advance. I run a sidegap Motorcraft Copper at .056 gap (.044 is stock), 16 BTDC base timing w/ 87 octane gas. I can't do that w/ double plats w/o ping! Supercoductor wires, brass C & R, 60K (.45 ohm) HV coil. 87' 302 w/87k. 23mpg@65mph. Otherwise stock except K&N drop in filter & all fluids are Synthetic.
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