I agree. I've seen them break several different ways AND I've seen them COME broken several different ways. lol
NGK spark plugs breaking.
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Newbomb Turk
Well-Known Member
RC14YC is the same plug as the N14. The only difference is the N plug had a 13/16 hex and the C plug has a 5/8 hex. The 5/8 hex is much nicer.
Edit: I’ve seen as many NGK and Autolites with bent ground wires, off set insulators and everything else.
I’ve used and still do use Champions in virtually everything I tune. They are easier to read.
So this bullshit that NGK’s are a step up from anything is nonsense.
I’ve pulled and replaced more NGK and Autolite plugs and made more power so many times I can’t count.
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Is this the cause of the problem? Recommendations for spark plug socket?
I saw that thread and I gotta say I've never had trouble using a regular socket for spark plugs. Although there are some instances where the rubber does help hold the plug in. As long as you support the head of the ratchet when you tighten them, you'll never break one. It's when you pull it tight and don't support it that the trouble comes in, because you tend to pull at an angle. When you do that, you'll crack the insulator almost every time. I've used the fuel hose trick a lot though.
Charrlie_S
Well-Known Member
Everyone has manufacturing issues at one time or another. It is how the problems are handled. Several years ago I had problems with champions not lasting in my race car. Within a couple of weeks I would get a misfire, which I couldn't diagnose. I wound up doing back to back testing at the track. Isolated the problem to the plugs (used autolites ran fine, Champs misfired). I sent the plugs back to Champion explaining the problem. Champion just responded with "there is nothing wrong with the plugs". Didn't even bother to send them back, offer another set, nothing. I also had a problem with a boxed wrong Autolite. Just one plug out of eight. Heat range was 5 steps hotter than what the box said. Found it after I had a misfire, and pulled the plug. I sent it to Autolite, along with the box(es). They sent me a message apologizing, offered to pay for any engine damage (there was none), and sent me a case of plugs "for my inconvenience".
slantsixdan
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Autolite used to be on my ok-list, many years ago. That stopped when they started being made in China and quality dropped noticeably.
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slantsixdan
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Just like every other "magic" spark plug gimmick in the history of ever, they don't do what's claimed. Yet another scam from China.
Where are NGK plugs made?
Made in Japan, looks like they have been in the plug business since 1937. I use their sister brand NTK for 02 sensors, they fail way less than Bosch or other makes.
A History of Niterra Co., Ltd. | Corporate Information | Niterra Co., Ltd.
Jay-pan is acceptable. They make some quality products.
rebelcaptain
Active Member
Why are you removing the sealing washer? I'm thinking that is bringing your plugs a bit closer to the piston, causing the breakage.
cruiser
Well-Known Member
The spark plug tube acts as the washer. If you leave the factory washers in place, now you have two washers and that creates a faulty seal with the cylinder.
Dale Davies
Well-Known Member
What you be talkin', no 6 Jeeps? Lots were built with the 258 AMC 6.
70Duster340
Well-Known Member
I'm no expert, but doesn't electricity travel the path of least resistance? The plugs designed with numerous ground electrodes still will only fire on one of those electrodes at a time. The way I see it, the E3 design would actually shroud the spark, depending on how the plug is situated in the cylinder. I don't believe it will throw multiple sparks during a single spark event. I would think that indexing your plugs would work as well if not better than those other designs. Please correct me if I'm wrong.
70Duster340
Well-Known Member
I would respectfully disagree. My first Mopar was a 1971 Charger, that I had transplanted a 340 into. I kept getting a misfire, and would change the plugs out, using the same factory recommended Champion plugs. The misfire always found it's way back. So, having a friend who was a mechanic, I went to him for advice. The first question he asked was if I was using Champion plugs. When I answered to the affirmative, he suggested that I changed to Autolite plugs. Never had another misfire after that.
Maybe it's just my luck, but I've never had good luck with Champion plugs, no matter what the application was. Just sayin'.
Newbomb Turk
Well-Known Member
70Duster340
Well-Known Member
Hey, just putting in my $.02. It happened.
Newbomb Turk
Well-Known Member
I’m sure it did.
I’ve always wondered about distribution patterns across the country.
It seems almost like some regions started getting Chinese or Mexican made plugs sooner than the rest of us.
It seems strange the discrepancies we see. And it’s not just plugs.
slantsixdan
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Spark plugs, engine oil, oil filters, religions, air filters…
slantsixdan
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He didn't write six-cylinder Jeeps, he wrote Slant-Six Jeeps.
70Duster340
Well-Known Member
And who decides these things?
Champion copper core plugs in my Mopars. I've personally not had a plug outperform them at the strip. I've tried accel, splitfire, sonic power, autolite, NGK etc. etc. I generally don't change my plugs once they are in either. Never have to.
slantsixdan
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Exactly.
NOPE.....
A little birdie tole Me that instead of pitching QC 2nd's & 3rd's in the dumpster & writing them off, Chumpion was given to packaging them & selling them dirt-cheap to discount stores, like Kmart, G.C.Murphy, etc., & I just might happen to know 1st hand a fresh tune-up on an AAR sporting a MP PS 292° that barely ran or idled & after exhausting a few other wild guesses...... ran like a pup after re-installing the old plugs at My suggestion. This would've been around '92-'93ish...
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