Gaps on spark plugs [Archive]

TDK

03-09-2003, 09:22 PM

I just got a set of the NGK Iridium sparkies for my 2002 SP20. The guy told me that the Iridiums come standard with about 1.5mm gap, but it needs to be adjusted to suit my car. Does anyone know what the Gap would need to be for the SP20?.

Also i would appreciate if someone could explain to me how the whole system works. For example, what does the ignition leads do, what the spark plugs do, etc, etc.

Thanks.

Toyboy

03-09-2003, 10:31 PM

From what ive heard man the irridiumIX plugs arnt meant to be adjusted cause of how fine the electrode is :shock:
It can be damaged really easily,they should of came pre gapped to suit your car to start with,if not then they gave you the wrong 1's :wink:

jcywong

05-09-2003, 05:12 PM

i got iridium plugs too but they come in 1.1mm gap, I had checked it, did you get the wrong parts?

Mr MX6

08-09-2003, 10:49 PM

When ever i get a newbie question on an other web page im involved in I always direct people to how stuff works .com.. it is excellent at this sort of thing.. well worth a book mark.
http://auto.howstuffworks.com/ignition-system.htm
cheers

Dogo

09-09-2003, 11:47 AM

i recently bought iridium plugs too. I was told very clearly not to adjust the gap. so maybe go back and get them to check their books to see what the 2002 sp20 is supposed to have.

TDK

09-09-2003, 02:59 PM

The guy that told me to adjust the gap was the guy that I bought my Magnecor ignition cables from. Obviously he doesn't know what he is talking about, because after thinking about it the Iridium plugs I bought were specifically for the SP20. This would mean that the plug would already be adjusted to suit the Sp20, otherwise it wouldn't have a part number specifically for the SP20.

Thanks for everyone’s help though.

Dogo

09-09-2003, 09:58 PM

http://www.ngkspark.com.au/

They have a part finder so u can see if urs are the right ones ...

Your Vehicle:
2/2001 - on Mazda 323 Astina SP20 2.0L DOHC FS

Recommended Plug
Part No. : ZFR5F-11 Plug Gap : 1.1

Iridium Option
Part No. : ZFR5FIX-11 Plug Gap : 1.1

Dogo

09-09-2003, 10:04 PM

while I'm there...

323 Astina BA ( 94-98 )

v6 ( YAY :) )

Your Vehicle:
7/1994 - 9/1998 Mazda 323 Astina 2.0L DOHC, V6

Recommended Plug
Part No. : BKR6E-11 Plug Gap : 1.1
Iridium Option
Part No. : BKR6EIX-11 Plug Gap : 1.1

4cyl

Your Vehicle:
7/1994 - 9/1998 Mazda 323 Astina 1.8L DOHC

Recommended Plug
Part No. : BKR6E-11 Plug Gap : 1.1
Iridium Option
Part No. : BKR6EIX-11 Plug Gap : 1.1

sorry earlier model owners :P

havnt put them in yet so i dunno what the torque they need to be at. any1 have any ideas ? i think its in the cars manual but havnt looked yet