Bosch Platinum Plus spark plugs?

[GMBoy]

Many of us know this, but just in case some don't...AC Delco no longer makes their sparkplugs. They are made by Denso, NGK, and Bosch depending on application....look closely at the plug and you will see the markings of the plug maker. AC Delco name is just put on the plug.

 

[pbm]

I have used Bosch regular copper plugs and single plats with no problems BUT I would avoid the exotic Bosch multi-tipped plugs because of bad stories I've heard...

 

[Eddie]

I've had excellent service from the Bosch Plats with the one & two grounds but, I have not used the 4 ground plugs.

 

[ARCOgraphite]

IME never had the Bosch Platinum work well in any application other than road racing. I would go with OEm or Denso TT for better spark esp on waste spark ignition. If COP app I would upgrade to the proper heatrange of Ir - they have less misfire count, great kernal w/o quenching and dont stress the secondary circuit too much.

 

[Chris142]

Does this engine use a waste spark ignition system? If it does those are picky about the plugs used.

 

[ahoier]

I like the Bosch plugs cause you don't have to mess with the gap theoretically (according to Bosch that is lol).

But have heard horror stories of the little electrodes "breaking off" and falling off in the engine ha, ouch....

Kinda like the look of those "e3 plugs" but, 9$ seems waaaaayyy too much x4 And yea, I've heard horror stories of anything but Champion plugs in "Chrysler Corp." (Dodge, Plymouth, Jeep, Chrysler, etc....hehe) vehicles......

 

[Rock_Hudstone]

Originally Posted By: SEMI_287
Chryslers typically run best with Champions.

My understanding is Champion use to make good plugs but quality has gone downhill over the years, no?

 

[Rock_Hudstone]

Originally Posted By: ahoier
I like the Bosch plugs cause you don't have to mess with the gap theoretically (according to Bosch that is lol).

But have heard horror stories of the little electrodes "breaking off" and falling off in the engine ha, ouch....


That was my first thought when I saw the ceramic electrode.

 

[ARCOgraphite]

Thats not an electrode its and insulator - and there the rub - that insulator nose is usually too cold OR too hot to get a good spark. Ive seen them work in an old audi 5000 turbo, thats about it. Skip it.

 

[Oregoonian]

Originally Posted By: SEMI_287
Chryslers typically run best with Champions.


+1...Champions are the best option for Chrysler....as Autolite's are for Fords. Stay with the OE recommendation.

Just installed Autolite (APP 103) Double Platinums...OE... in my 03' Focus....and they work perfectly.

 

[yonyon]

Originally Posted By: penz08
I have a 08 hyundai accent, i had ngk iridum, ngk platinum, they were both missfiring at highway speed. Apparently, copper is a better choice to get a strong spark, so i put in champion copper plus, the small 1.6L run so much better, response better too. It depends of the typ of engine you have i guess, but for me,coppe it is, i dont waste money on expensive iridium or plat.


It would make sense that switching from copper to platinum or iridium at the same gap and heat range could be problematic in a borderline application. The coppers should have a slightly lower internal resistance. If you still have the iridium or platinum plugs, don't throw them out. Save them for when your coppers wear out and give them a second try with a closer gap. They may work just fine that way and save you the cost of a new set of coppers.

 

[Rock_Hudstone]

I took one of the plugs out for inspection today, they are Champion Double Platinums #RN14-PMP5

I have no idea the mileage on them, but it actually looked pretty clean, gap was about .055, should be .050, case was slighty corroded in spots however.

 

[andyd]

I agree with the sentiments about Bosch parts having spotty quality issues. Plats foul easily in some cars. I'm an old faht, I swapped from Bosch coppers to the NGK equivalent. I dont like those skinny little electrodes.

 

[antiqueshell]

Guess it depends on who is using them.

I've been using Bosch Platinums single and double tips for years without a single problem (yes they have the insulator that surronds the center electrode too) they run great and last a long time. Made in Germany.

I've also used the Super Plus copper plugs with the standard insulator and also good product with reliable service for a 30k miles.

Actuall the Bosch Platinum versions are superior self cleaning compared to most other brands.

 

[mechtech2]

Originally Posted By: yonyon
Originally Posted By: penz08
I have a 08 hyundai accent, i had ngk iridum, ngk platinum, they were both missfiring at highway speed. Apparently, copper is a better choice to get a strong spark, so i put in champion copper plus, the small 1.6L run so much better, response better too. It depends of the typ of engine you have i guess, but for me,coppe it is, i dont waste money on expensive iridium or plat.


It would make sense that switching from copper to platinum or iridium at the same gap and heat range could be problematic in a borderline application. The coppers should have a slightly lower internal resistance. If you still have the iridium or platinum plugs, don't throw them out. Save them for when your coppers wear out and give them a second try with a closer gap. They may work just fine that way and save you the cost of a new set of coppers.


People should know by now that you can have copper cored ANYTHING type plugs.
The internal resistance is nothing compared to the gap fired under compression.. Copper is just another way of passing electricity internally.

I also don't use Bosch unless they were factory installed. Most mechanics agree with me from experience.. It is a dice roll if they will be OK.