Platinum plugs replacing
#2757416
03/29/20 09:55 PM
03/29/20 09:55 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
OP
If you can't dazzle em with diamonds..
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OP
If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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What visual clues do you look for to decide the right time to replace platinum plugs?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Platinum plugs replacing
[Re: jcc]
#2757438
03/29/20 11:11 PM
03/29/20 11:11 PM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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When you can see noticeable wear on the ground strap and the center electrode as well as damage to the center porcelain insulator Or when the motor starts missing due to bad plugs or wires
Last edited by Cab_Burge; 03/29/20 11:12 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Platinum plugs replacing
[Re: jcc]
#2757444
03/29/20 11:31 PM
03/29/20 11:31 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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If they're Bosch platinums and its not a European car, IMMEDIATELY. Otherwise the above is good.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Platinum plugs replacing
[Re: HemiRick]
#2757448
03/29/20 11:40 PM
03/29/20 11:40 PM
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Joined: Dec 2004
Posts: 10,552 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,552
Rittman Ohio
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If they're Bosch platinums and its not a European car, IMMEDIATELY. Otherwise the above is good. Exactly They work OK in German cars but for anything else go NGK or Denso Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: Platinum plugs replacing
[Re: fourgearsavoy]
#2757487
03/30/20 07:30 AM
03/30/20 07:30 AM
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Joined: Jan 2003
Posts: 21,071 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,071
Niles , Ohio
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Another for trashing them if Bosch.Cant say how many sets I replaced at the shop because they were junk.Only ever saw 1 car that ran decent with thm .Even the super pricey ones were terrible.IIRC it seems that Bosch gave incentives for parts stores to push them.Rocky
Chrysler Firepower
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Re: Platinum plugs replacing
[Re: Cab_Burge]
#2757619
03/30/20 02:44 PM
03/30/20 02:44 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
OP
If you can't dazzle em with diamonds..
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OP
If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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When you can see noticeable wear on the ground strap and the center electrode as well as damage to the center porcelain insulator Or when the motor starts missing due to bad plugs or wires That seems reasonable. Hard to visualize wear on the center electrode, because they are so small/odd shape to begin with and don't exactly recall, and the "little" erosion I do see, seems like a regap would suffice? The one's I'm looking at are NGK, truck runs fine, coil on plug 90K on Plugs, 500K on truck. I was going Autolite Plat, because they were so cheap?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Platinum plugs replacing
[Re: second 70]
#2757958
03/31/20 12:01 PM
03/31/20 12:01 PM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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I changed the AC plugs on my 2004 Silverado last year at 100,000 miles and they looked new. Have people that have no problem putting over 200,000 on them. I put Iridium in this 5 yrs ago,over 100 K miles and they look like the day I put them in.
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Re: Platinum plugs replacing
[Re: second 70]
#2757959
03/31/20 12:03 PM
03/31/20 12:03 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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I'm always amazed at these " Bosch Platinum plug threads" and the "anti-Bosch" bashers, I usually run nothing but Bosch Platinum/iridium, I have them in everything from 318's, 340 6 pack, 440, 440 6 pack even my V10 with ZERO issues, plenty of miles/years of usage.... I don't see any of the supposed issues that the same posters have that always condemn these plugs?....I actual dislike AC, Champion plugs (pure crap) NGK is a 2nd choice if Bosch are not in stock or available, as far as the OP's question of replacing Bosch Platinums? I've never experienced a bad Bosch plug(s) over the decades, I'll generally change them out around 75-90K or 3-4 yrs on a DD just for the hell of it...
Mike
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Re: Platinum plugs replacing
[Re: AARCONV]
#2758331
04/01/20 10:32 AM
04/01/20 10:32 AM
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Joined: Feb 2014
Posts: 1,705 central il.
second 70
top fuel
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top fuel
Joined: Feb 2014
Posts: 1,705
central il.
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if you are taking the time to remove them to check, then just replace them..don't look back..lol Of course I replaced them after I took them out. I just stated it wasn't necessary, didn't run any better, and wouldn't worry about waiting for another 200,000 to do it the next time.
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Re: Platinum plugs replacing
[Re: second 70]
#2758401
04/01/20 01:09 PM
04/01/20 01:09 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
OP
If you can't dazzle em with diamonds..
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OP
If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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As OP, I took out the first plug, checked the gap, visually couldn't see why it needed replacing, re installed it, might return the 4 Autolights, which were cheap, and new, and don't look as nice as the original NGK's.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Platinum plugs replacing
[Re: jcc]
#2758473
04/01/20 04:28 PM
04/01/20 04:28 PM
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Joined: Jan 2003
Posts: 21,071 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,071
Niles , Ohio
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Dayclona if you have good luck with Bosch go play the lottery.Total junk as far as Im concerned. 30 years as a tech and only saw 1 car they ran good in.My kid aslo put a set in the 61 Polara he had because they didnt have any others.Car ran terrible hard to start etc.I puled them and use Autolites.Like a new car.Like I said i replaced tons at work in cars that ran like total crap.Could not have been all the cars when one denominator was the plugs.Rocky
Chrysler Firepower
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Re: Platinum plugs replacing
[Re: therocks]
#2758564
04/01/20 06:59 PM
04/01/20 06:59 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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Another over 30 yr exp auto tech, and I agree Bosch platinums are a way to make most cars run like crap. BTW I ALWAYS use OEM plugs in stock engines......brand and heat range.
Last edited by HemiRick; 04/01/20 07:00 PM.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Platinum plugs replacing
[Re: DAYCLONA]
#2761053
04/07/20 10:49 AM
04/07/20 10:49 AM
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Joined: Jan 2003
Posts: 3,704 MICHIGAN
DynoDave
master
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master
Joined: Jan 2003
Posts: 3,704
MICHIGAN
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I'm always amazed at these " Bosch Platinum plug threads" and the "anti-Bosch" bashers, I usually run nothing but Bosch Platinum/iridium, I have them in everything from 318's, 340 6 pack, 440, 440 6 pack even my V10 with ZERO issues, plenty of miles/years of usage.... I don't see any of the supposed issues that the same posters have that always condemn these plugs?....I actual dislike AC, Champion plugs (pure crap) NGK is a 2nd choice if Bosch are not in stock or available, as far as the OP's question of replacing Bosch Platinums? I've never experienced a bad Bosch plug(s) over the decades, I'll generally change them out around 75-90K or 3-4 yrs on a DD just for the hell of it...
Mike My experience has not been as vast as yours, but I have used them several places, and never had an issue. In my old carb'd 2.2L engines, they were the trick to curing a random miss when idling in open loop.
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