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what spark plugs for my b21?

 
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Old 08-25-2007, 04:22 PM
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Icon5 what spark plugs for my b21?

My b21 is burning a little oil, enough make the spark plugs foul (spelling?) and miss. The fouling isn't horrible, but my motor has very little power below 2700 rpm. I tried the some new OEM style NGK spark plugs and they starting fouling/missing after only 30 miles of driving! What plugs should I use??

~Ryan

Last edited by ra233; 08-25-2007 at 04:25 PM.
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Old 08-25-2007, 06:39 PM
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It's not your spark plugs, it could be your timing or some other "spark" related issue.
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Old 08-25-2007, 11:58 PM
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try changing to some NGK wires, and like B said check your timing!! but im running NGK Iridium Xs with NGK wires and they're doing great!
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Old 08-27-2007, 02:42 PM
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does that really help with burning oil "better"? I know that I am burning oil, blow-by, or am I?
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Old 08-27-2007, 04:27 PM
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No, it wont.


Oil burning & blowbye is caused by your piston rings. You can't stop it, you can only slow it down...im sure you've read my b21 hollah at your boy thread.

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Old 08-27-2007, 06:56 PM
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Yeah, B21's are notorious for burning oil, but I doubt your plugs are fouling that fast due to oil blow by. How often do you add oil or did you say? I've read all sorts of threads in here that talk about a coating on the cylinder sleeves on the B21's that cause the rings to fail a bit prematurely. My B21 burns a little bit too.
I've been told to use a motor oil designed for high mileage cars that tends to help.

If I were you I'd investigate that timing issue like these guys were telling you, a lot of the guys here on this forum know what they are talking about they have helped me alot.

Good luck
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Old 08-28-2007, 07:36 PM
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I suppose I need to adjust my timing then. Thanks for the help. As far as how much oil I am burning, I am not really sure. I haven't driven it very much yet because the cooling system has a leak somewhere.
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Old 08-29-2007, 10:29 AM
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NGK 11's
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Old 08-29-2007, 04:22 PM
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Technically, on the underside of your hood it says which exact spark plugs to use. I think it says NGK something...but you can use Denso or Bosch.

...a wise technician changes his spark plugs at every oil change...but none of us are that wi$e.
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