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#311340 Oct 27, 3:27pm
Joined: Jul 2004
Posts: 114
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2000 Toyota Celica GT
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2000 Toyota Celica GT
Joined: Jul 2004
Posts: 114
I bought the Bosch Platnum series plug's for my car. I pulled the Denso I radium plugs out and they were just about melted. Now for some odd reason when i am sitting at a light my car idles down to less than 100 rpm's and almost dies, Any ideas what may be causing this?


I'm not the man, But I'm next in line When HE dies.

Joined: Sep 2004
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2002 Toyota Celica
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2002 Toyota Celica
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Posts: 60
not screwed in all the way ? j/k

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2001 Toyota Celica
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2001 Toyota Celica
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It might be the fact that the car needs irridium plugs, They're more conductive than platinum. Try putting new irridium plugs in. Why were the old ones melted anyway. Irridium plugs should last like 100,000 miles.

Joined: May 2003
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2002 Toyota Celica
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2002 Toyota Celica
Joined: May 2003
Posts: 522
Iridium plugs have very tiny electrodes, it may look wierd to you, but that's how they are.

Iridium is super strong and highly conductive; therefore it doesn't require a massive electrode.
You need to cut it with a special laser when making it into a spark plug. That engine block would melt before the iridium does.


Odds are, it's not melted away, that's the way iridium plugs are supposed to look.

Now if it's phisically melted, then something is seriously wrong... Why not take a picture of the plugs and post it so I can actually see what you're talking about. Is the ceramic insulation cracking? Is there a lot of carbon? Different signs mean different things.

Stay away from platinums, unless you have some special things going on under the hood. Iridiums are fine.

Last edited by Rave669; Oct 27, 2004 6:32pm.

Joined: Aug 2004
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2002 Toyota Celica
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2002 Toyota Celica
Joined: Aug 2004
Posts: 87
Bosch Platinum, Platinum 2,3,or 4?. Like Rave669 said crates too much spark making your car not idle correctly. Stick with standard plug no platinum 2,3 or 4. Iridium plugs recommended NGK IFR6A11 or Denso SK16R11.

Joined: Apr 2004
Posts: 404
Turbonator
2000 Toyota Celica
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2000 Toyota Celica
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Posts: 404
yeah, isnt there a sticker in the side of the valve cover that says to only use Iridium Plugs. happywink


"If you dont like Hair blowers why would you like Turbo's"
Last car '92 Eagle Talon TSI AWD, R.I.P, Current car '00 Toyota Celica GT-S. Next car Fully Built 1st Gen AWD DSM.

Joined: Oct 2004
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2000 Toyota Celica GT
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2000 Toyota Celica GT
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Posts: 132
Stick with NGK or Denso Iridium

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2000 Toyota Celica
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2000 Toyota Celica
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yup just like everyone said stay with the denso ones, no point on gettin the other kind, its not like you will get performance out of a spark plug, maybe 1hp but yeah, im going to get some spark plugs and now that i read this ill go for denso iridium, good luck

Joined: Sep 2004
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2001 Toyota Celica
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2001 Toyota Celica
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Bosc is a european manufacturer so they don't work to well on Japanese imports. My car had bosc plat when i bought it, after changing to Denso Iriduims the car runs smoother. Anyway why did you downgrade from iridium to platinum?

Joined: Sep 2004
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2000 Toyota Celica GTS
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2000 Toyota Celica GTS
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Posts: 411
i think you need to put back iridium plugs. it says to only use iridium plugs too...like that said...the platinum may be too restrictive for the coils


GATOR HATOR! GO FSU NOLES!!!

Joined: Jul 2004
Posts: 114
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2000 Toyota Celica GT
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2000 Toyota Celica GT
Joined: Jul 2004
Posts: 114
Well got the denso plugs now i keep the plat's in my car for emergancies, just incase i see someone i need to throw something at.


I'm not the man, But I'm next in line When HE dies.
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