E3 plug problem

Eric Davenport /

Anyone else seen this happen before?

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This had maybe 2 miles on it. I pick it up on my way home from work because it was handy. It said it was a replacement for ngk b6s. Ran great compared to the fouled autolite I had in it. When it went out, it felt like a really fouled plug. I limped it the rest of the way to a gas station half throttle. As a bonus it also somehow fucked my temp sensor.

Running the cheap treats adventure pack cdi with a ngk 5K cap. 1.8ish mm btdc

Re: E3 plug problem

Is that melted, or are those deposits?

If you google "reading a spark plug" or "spark plug deposits" you'll find tons of images showing what various engine problems do to a plug.

Re: E3 plug problem

Eric Davenport /

Melted.

Re: E3 plug problem

Must be running a 1.21GW ignition coil

Re: E3 plug problem

...yes. Detonation. Pull the head off and inspect the piston. Google images.

Re: E3 plug problem

I'm honestly surprised the plug went before the piston crown.

Re: E3 plug problem

Eric Davenport /

So just swapping the plug would have caused detonation? I've put hundreds of miles on this setup already.

Re: E3 plug problem

We've gotten bootleg NGK spark plugs before. All the numbers matched and the reach matched but the operating temps were off. Pointing it out to the selling dealer started a small issue as it was very hard to distinguish the real from the fake. I also hate the computer updated cross compatibility charts as they never seem 100% correct, especially with the more obscure plugs. (edited)

Re: E3 plug problem

Eric Davenport /

Guess just too hot of a plug? It is tiny and got hot enough to start bluing and it melted the connection on my temp gauge.

Re: E3 plug problem

Those e3 plugs are trash, never run them in anything, throw them right in the garbage.

Re: E3 plug problem

campeona del mundo /

> Graham Motzing wrote:

> -------------------------------------------------------

> Those e3 plugs are trash, never run them in anything, throw them right

> in the garbage.

^^^this

Re: E3 plug problem

Eric Davenport /

> Graham Motzing wrote:

> -------------------------------------------------------

> Those e3 plugs are trash, never run them in anything, throw them right

> in the garbage.

Lesson learned

Re: E3 plug problem

> campeona del mundo wrote:

> -------------------------------------------------------

> > Graham Motzing wrote:

>

> > -------------------------------------------------------

>

> > Those e3 plugs are trash, never run them in anything, throw them right

>

> > in the garbage.

>

> ^^^this

agreed. Probably a copy of an already shitty plug. I'll bet the plug melted because of inferior materials and not from detonation. I'd still take the head off and inspect for deposits within.

Re: E3 plug problem

> Sam P. wrote:

> -------------------------------------------------------

> We've gotten bootleg NGK spark plugs before. All the numbers matched and

> the reach matched but the operating temps were off. Pointing it out to

> the selling dealer started a small issue as it was very hard to

> distinguish the real from the fake. I also hate the computer updated

> cross compatibility charts as they never seem 100% correct, especially

> with the more obscure plugs.

Counterfeit plugs are definitely a thing.

Re: E3 plug problem

Eric Davenport /

Meh

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Re: E3 plug problem

... ok, now remove the cylinder and inspect the piston.

Re: E3 plug problem

Eric Davenport /

> Den 23 wrote:

> -------------------------------------------------------

> ... ok, now remove the cylinder and inspect the piston.

Check out the tccd reed conversion thread in the performance section

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