Strange spark plug design

[IMMORTEN]

I have never seen any like this before with a removable brass end piece like this (I don’t know the specific term for it)

They are from a company called BERU

My logic sense tells me this can’t be a great design...I don’t know why






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[TerryMason]

I've seen them with screw off tips before, but I've never seen the brass ones.

I had assumed that they put different tips on them for different application / plug wires.

 

[JPNinPA]

A really long time ago those ends came off plugs. Now they are making auto that do have smaller plug connectors for the threaded end.
They are solid. Loose with terminal nut and stud type

For your 98 Cherokee you need single platinum. 2000 and newer double platinum.


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[IMMORTEN]

They were ordered for my 4.0 Jeep ZJ. They were recommended to me by the “technical department”’from the vendor I bought them from.

I guess I will have to find out the hard way if they are any good or not


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[JPNinPA]

If they are copper they will only last 10k miles. Single platinum 30K. Double pt little longer. Iridium much much longer. Though you might not get the best mog off iridium as single pt.

Any fancy electrode design fails quickly and you misfire and backfire


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[JPNinPA]

Champion and autolite are top recommendations


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[IMMORTEN]

Yeah champion spark plugs is what the Haynes recommends too.

But I change oil, filters and spark plugs once a year regardless of millage anyway

(or “kilometer-age” in my case...if that’s even a real word)

I’m sure there are people who think it’s ludicrous to do once a year, but it’s super cheap, it’s preventative maintenance and it gives me an excuse as well as opportunity to work on my Jeep...which is something I truly enjoy.


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[JPNinPA]

Consider adding cleaning battery and terminal cleaning. Inspecting ground cables and ground connections at the engine and chassis.

Then cleaning the throttle body and IAC.


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[IMMORTEN]

Consider adding cleaning battery and terminal cleaning. Inspecting ground cables and ground connections at the engine and chassis.

Then cleaning the throttle body and IAC.


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Noted! ...thank you kind sir for sharing your wisdom and guidance


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