All 16 new plugs gapped at .38

ElJefe62 · Mar 7, 2021

Just started a plug/wire change. Bought 16 autolite APP5363 plugs. I checked gaps when they arrived. Every one was .38. So i figured the $2 gap tool was off. I pulled the oe first plug and gapped it at .44. Im not gapping 16 plugs. Am i an idiot? What am i missing?!?

B E N · Mar 8, 2021

Autolite claims those are gapped at 0.051" from the factory https://www.autolite.com/parts-finder/APP5363/contact-us I am not sure how you got a set that was that far off.

FYI a set of feeler gauges have a whole mess of uses, including this and can be had for under $5:
https://www.autozone.com/clamps-and...tGBMjRYQOYKc8Qy0ZGwaAusiEALw_wcB&gclsrc=aw.ds

On gaps: Ford says 0.041-0.047" is acceptable. 0.038" probably won't hurt anything, gap is more of a problem when too wide than too narrow. With the old coil packs etc run em' and you will likely not see a difference. NGK calls for 0.030" on their plugs.

CoronaRaptor · Mar 8, 2021

Why would you not want to gap 16 plugs? Because of time or are you just lazy?

MTF · Mar 8, 2021

Be careful using that POS gapping tool, it scratches the electrode making hot spots and decreases the life of the spark plugs.

.30 to .32 is the what most are gapping at with a Tune on the forum using Motocraft and NGK

MrGable27 · Mar 9, 2021

B E N said:
Autolite claims those are gapped at 0.051" from the factory https://www.autolite.com/parts-finder/APP5363/contact-us I am not sure how you got a set that was that far off.

FYI a set of feeler gauges have a whole mess of uses, including this and can be had for under $5:
https://www.autozone.com/clamps-and...tGBMjRYQOYKc8Qy0ZGwaAusiEALw_wcB&gclsrc=aw.ds

On gaps: Ford says 0.041-0.047" is acceptable. 0.038" probably won't hurt anything, gap is more of a problem when too wide than too narrow. With the old coil packs etc run em' and you will likely not see a difference. NGK calls for 0.030" on their plugs.

+1 for a set of feeler gauges, way better than one of those gap tools. And I’m trying to remember what I gapped mine at...I feel like I split the difference at 0.044, but it might’ve been 0.042.

ElJefe62 · Mar 15, 2021

Vendor sent me out 16 new plugs. Told me the ones i had were “mis-boxed”. All the new ones came in at .41. Gapped them all a 44/45. Only used the feeler to check. Gapped with another tool. Had 2 different kinds of plugs on top and bottom. Weird

B E N · Mar 16, 2021

Looks like these were changed out by a lazy at some point? The one on the left is a large electrode and the one on the right is fine electrode platinum , which is stock. I will guess that the fat electrode plugs were on the top, since those are easy

ElJefe62 · Mar 16, 2021

You sir. Would be correct!

All 16 new plugs gapped at .38

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