Quote:
Originally Posted by UndeadSpaceMonkey
Have this slight miss during idle so though it would be a good idea to throw in a set of plugs and wires. Where I am from there is no Ford Dealer close so I wouldnt be able to get the Motorcraft ones.
The NGK TR55 IX Iridiums are all pre gaped for .60 (confirmed with gapper)
The MOTORCRAFT SP413 (32N) {#AGSF32N} are gapped at .45
Here are my questions, why the difference in gap? and should i use these NGKs (I sure would considering i paid $60 for them and now cant return)
Should i regap the NGKs? Well these NGKs burn more fuel?
Ive checked multiple sites before ordering the NGK ones and all sites say these will work in my 2008 3.0 i just dont get why the Motorcraft ones are a smaller gap, one would think the NGKs need to be the same.
Thanks everyone
any help on this would be greatly appreciated
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We exclusively use NGK wires and plus on all of our own vehicles, including Rangers as well as builds and customer vehicles we do maintenance work for even.
Your using the NGK 7164 (TR55IX) Same plugs we use in two of our Ford Ranger rigs specifically, they really work great!
You'll find this topic right up there with who makes the best oil filter and what oil do you use arguments. Typically many fall in the category of being either "brand" or "stock" Nazi's in some things concerning the maintenance and few ever come away from that. Its representative of living in a small town and never leaving your county to see the rest of the world in some cases. That opinion aside:
It is a slight upgrade in our opinion and of use and only when we cant find a NGK component that does not fit the means or needs we do always refer back to the manufacture equipment; in this case it would be the Motorcraft comparable.
Keep the Gaps as they were. The NGK iridium plugs are gapped differently because they provide a better spark and create a more efficient burn in the particular application, NOT all plugs are equal. You will find it to be a little bit smoother in the top end too.