Pictures of my Bosch Platinums @ 31k miles.

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9,448
Location
USA
Well, The electrodes look fine to me. It is a low res. image and the angle is bad but what I could see looked just fine. Are you talking about the rust colored stains on the outer portion?
 
Messages
24,382
Location
Central Florida
Don't worry about the rust colored deposits left on the porcelain of the spark plugs, that is just moisture trapped between the plug and the wires. I installed a pair of Bosch Platinum +4 plugs in my wife's 1998 Civic EX.....and 20,000 miles later, they were dogged. When I took them out, all the plugs were white, they were the correct part number, but some Bosch plugs are known to run hotter than the factory (NGK) heat range. [ April 29, 2005, 12:00 AM: Message edited by: LT4 Vette ]
 
Messages
341
Location
Upstate, NY
4 cyl Tib, is that the 2.0L? In my Accent witht he 1.6L, Bosch Platinums didn't last 14K miles. I developed a rough idle. Turns out 2 of the 4 plugs had the platinum electrode almost completely burned out, I think it was the #1 and 3 cylinders. Replaced them with NGK and 16K miles later they are still good.
 

Korean_redneck

Thread starter
Messages
889
Location
MI
quote:
Originally posted by Clement: 4 cyl Tib, is that the 2.0L? In my Accent witht he 1.6L, Bosch Platinums didn't last 14K miles. I developed a rough idle. Turns out 2 of the 4 plugs had the platinum electrode almost completely burned out, I think it was the #1 and 3 cylinders. Replaced them with NGK and 16K miles later they are still good.
Oh no.. ever since i installed them,, 6 k later.. i would have poor performance, my engine would bog, poor Cold starts etc. These NGK's are unbelievable! I love them. I don't think Hyundai's like Platinums except the XG350's anyways. yeah.. its the 2.0 litre 4 cylinder. such a great engine. even better ever since my first ARX.. now i'm on my Second Phase.
 

Jon

Messages
384
Location
Wisconsin
I've had great luck with the Champion plugs in my '02 Accord V6. Just the basic plug, 6 of 'em for 9 dollars. As for Bosch? You could pay me to put them in, but it's gonna cost you. Alot. IMO, Bosch doesn't hold a candle to NGK or Denso. If it were mine, I'd put in the Champs and change 'em every 20K or whenever.
 
Messages
2,095
Location
IL
The discoloration is combustion gas blow by. I get that with Bosch. Never with NGK. The blowby is probably so little as to not affect performance, but to me indicates the NGK are better sealed and most likely better built overall if they have tighter tolerances and are paying more attention to details.
 

Korean_redneck

Thread starter
Messages
889
Location
MI
quote:
Originally posted by Jon: I've had great luck with the Champion plugs in my '02 Accord V6. Just the basic plug, 6 of 'em for 9 dollars. As for Bosch? You could pay me to put them in, but it's gonna cost you. Alot. IMO, Bosch doesn't hold a candle to NGK or Denso. If it were mine, I'd put in the Champs and change 'em every 20K or whenever.
I'd never use Champs either. In high school I bought a used Hyundai Accent and the owner before did a minor tune up(changed plugs) before selling. I checked the gap and everything after i bought it..then 30k later, i bought regular NGK.. about 7 bucks for 4 at Auto zone. you could feel the difference. but maybe thats just Hyundai.. I guess Hyundai loves NGK
 
Messages
260
Location
York, PA
quote:
Originally posted by Jason Troxell: The discoloration is combustion gas blow by. I get that with Bosch. Never with NGK. The blowby is probably so little as to not affect performance, but to me indicates the NGK are better sealed and most likely better built overall if they have tighter tolerances and are paying more attention to details.
Then you get better NGKs than I do. All my plugs for the last 70k miles (5 sets) have done that. 3 sets of NGK and 2 sets of Denso. Always with the brown crap up the outside of the porcelain. Only goes away when I keep the outside of the plug coated with silicone dielectric grease.
 
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