Spark plug gap tool? Waste money?

[ORRadtech]

Pre-gapped plugs should not always be assumed “correct” all the time. Even if the plug is supposedly pre-gapped, I’ve always checked all new plug gap specs before installation.

I just did a plug replacement on my N/A GT and 7 of 8 of the the NKG plugs I bought were gapped correctly. One needed fixing.

Wasn't it Ronald Reagan who said "Trust but verify."?
Applies very well to pregapped plugs...

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[bluebeastsrt]

I’ve always owned highly modified cars. So plugs get changed more. Buy the right tool for the job. It’s not like tools go bad. It’s basically a one time purchase that you’ll use for the next 30 years. I bought this from summit racing 20 years ago for like $20. Still use it regularly.

 

[FreePenguin]

Since everyone agrees overpriced for what it was
Found the same exact item on AliExpress for 40 bucks. Just different brand name on it. The new one is called pqy racing I think. Same color and everything. Slightly diffeeent knob.

For 40, I will gamble it. It’s the universal one for all different size plugs. Hope works decent enough.

 

[FreePenguin]

I’ve always owned highly modified cars. So plugs get changed more. Buy the right tool for the job. It’s not like tools go bad. It’s basically a one time purchase that you’ll use for the next 30 years. I bought this from summit racing 20 years ago for like $20. Still use it regularly.

I just saw this post, I ordered the China one yesterday.

If this one sucks I will but the one you posted.

 

[FreePenguin]

Edit I actually saw this plug gapper on summit but the websites all showed it unavailable for purchase

 

[Bulldog9]

I've had one like this for 30 years. Never needed more. Current livery is 4 cars, 6 motorcycles, various yard/awn machines.

https://www.summitracing.com/parts/wtc-9531

 

[TexasRebel]

These are the best along with a true set of feeler gauges. The tool itself has a few common gap measurements, but the feeler gauges fill in the rest of the gaps.

Most modern spark plugs have non-adjustable gaps, including the plugs in the Coyote. Some of them use a band for an electrode (not a cantilevered electrode) and others use metals and coatings that do not bend well. If you attempt to adjust the gap, you risk cracking the coating or weakening the electrode (which will fall into the cylinder later).

 

[Brian@BMVK]

I put in NGK 6509s a couple weeks ago. I verified the gaps on all 8 with a tool just like the post above ^^^. My stock plugs with 86k miles on them were all above 0.060"

 

[mindo389]

I use a wire gauge now but used to use feeler gauges for gap setting. I learned on older cars that had points and a condenser. Even learned back then that you must have the ignition off before checking the points gap...

 

[FreePenguin]

I put in NGK 6509s a couple weeks ago. I verified the gaps on all 8 with a tool just like the post above ^^^. My stock plugs with 86k miles on them were all above 0.060"

These are the best along with a true set of feeler gauges. The tool itself has a few common gap measurements, but the feeler gauges fill in the rest of the gaps.

Most modern spark plugs have non-adjustable gaps, including the plugs in the Coyote. Some of them use a band for an electrode (not a cantilevered electrode) and others use metals and coatings that do not bend well. If you attempt to adjust the gap, you risk cracking the coating or weakening the electrode (which will fall into the cylinder later).

The gaps on ruthenium hx is .032 and I think stock ecoboost is .028
The hx says can be adjusted .08 or .008 in either direction I believe

One of the two

 

[Bulldog9]

I put in NGK 6509s a couple weeks ago. I verified the gaps on all 8 with a tool just like the post above ^^^. My stock plugs with 86k miles on them were all above 0.060"

I use normally use NGK exclusively in all my cars/motorcycles. Plan to change at 50K miles. Have heard the FOMCO are best in the Coyote, how are you finding the NGKs? What is the stock gap?

 

[Brian@BMVK]

I use normally use NGK exclusively in all my cars/motorcycles. Plan to change at 50K miles. Have heard the FOMCO are best in the Coyote, how are you finding the NGKs? What is the stock gap?

Stock gap range is 0.045-0.052, IIRC, so just a little lower. The way I figure it, is that it'll move into that range with some miles. So far they are performing quite well, and improved performance over the way-out-of spec old ones, but I can't say how a new OEM, stock gap plug would compare.

 

[FreePenguin]

forgot to update this, I received it awhile back, and since I had it. I went crazy.

changed a sonic, scion, mustang, harley spark plugs. I use the little wire gapped tool, to extend a gap out, but if a gap needed lowered, I used this little tool. didn't fret a bit. at 40 bucks, whatever. it already paid itself off. gapped all my rutheniums effortlessly. just small little turns, checking each time and making a small turn til im at the desired gap.

all my vehicles are running better than ever! I even tossed amsoil oil and amsoil filters and all new engine filters or cleaned them all. was fun.

 

[FreePenguin]

Just tossed old plug in it and playing around for photos for ya

 

[Mach VII]

Hmmm that tool only closes gap or am I missing something?

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