Spark PLugs

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Jul 22, 2003 | 09:01 AM

killmenow423

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From: fenton, MI

Spark PLugs

Has anyone bought NGK 86-89 spark plugs From MazdaFormance.com?

Jul 22, 2003 | 09:15 AM

Black13B

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From: Alberta

What number are they?

Should be:

2x BUR9EQ's
2x BUR7EQ's

You can also get them at Mazda..

Jul 22, 2003 | 09:47 AM

jetfire76

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From: 19805

www.performancemotorcars.com

cheap prices and ultra fast and free shipping(if over $50).

Jul 22, 2003 | 09:59 AM

SlidinRX7

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From: Hawaii

If there is CSK store near you, then I would suggest checking them out first.

Jul 22, 2003 | 10:04 AM

Black13B

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From: Alberta

... Or the Mazda dealership..

Mazda had the best prices compared to anyone else In my region.

Jul 22, 2003 | 03:55 PM

SlidinRX7

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From: Hawaii

Quote:

Originally posted by Black13B
... Or the Mazda dealership..

Mazda had the best prices compared to anyone else In my region.

Wow, I would've thought that they would be charging people an arm and a leg.

Jul 22, 2003 | 09:24 PM

killmenow423

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From: fenton, MI

The nearest mazda dealer to me is in Farminton Hils MI and ive never been their so im probably definently going to buy online.

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Jul 22, 2003 | 09:31 PM

killmenow423

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From: fenton, MI

I also don't know what the hell they mean by leading and trailing.

Jul 22, 2003 | 09:40 PM

Dan H

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From: San Francisco, CA

Trailing = lower plugs
Leading = upper plugs

And yes, they're both different.

Jul 22, 2003 | 09:48 PM

#10

Rxmfn7

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From: Lower Burrell, PA

Any local auto parts store should carry them, such as advanced or NAPA... Thats where I always get mine.

Jul 22, 2003 | 09:52 PM

#11

Mr. Gadget

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From: Parts Unknown

Quote:

Originally posted by Dan H
Trailing = lower plugs
Leading = upper plugs

And yes, they're both different.

You have it backwards dude...

Jul 22, 2003 | 09:53 PM

#12

Black13B

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From: Alberta

Quote:

Originally posted by Rxmfn7
Any local auto parts store should carry them, such as advanced or NAPA... Thats where I always get mine.

I had to order them from NAPA. While waiting for my order, I went down to Mazda, and they had them in stock for 4 bucks cheaper.

Jul 22, 2003 | 09:58 PM

#13

Dan H

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From: San Francisco, CA

Quote:

Originally posted by Mr. Gadget
You have it backwards dude...

You sure??

Jul 22, 2003 | 10:01 PM

#14

Dan H

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From: San Francisco, CA

Oops! My mistake!

Guess I found an error in the Haynes manual then.

Jul 22, 2003 | 10:30 PM

#15

ilike2eatricers

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From: bay area

Is that error really in the haynes manual? Wow that is surprising that such a widely used manual has such a critical error that might cause a car to run like crap.

easy way to remember:
trailing=top
leading=lower
T1=top front rotor T2 top rear rotor
L1=lower front rotor L2 lower rear rotor

Jul 22, 2003 | 10:38 PM

#16

jeffraider

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From: Nanaimo, BC

How many plugs do you need in total?

Jul 22, 2003 | 10:41 PM

#17

ilike2eatricers

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From: bay area

four 2 leading 2 trailing
bur9eq
bur7eq
I dont remember which ones off the top of my head are the leading and trailing but they have "L" or "T" on the box.

Jul 22, 2003 | 10:47 PM

#18

andrew lohaus

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From: fl

ther is no mazda dealer neer me so i ordered from mazdaperformance. you find them any cheaper and they arived in just a few days

Jul 22, 2003 | 10:49 PM

#19

Mr. Gadget

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From: Parts Unknown

Quote:

Originally posted by ilike2eatricers
four 2 leading 2 trailing
bur9eq
bur7eq
I dont remember which ones off the top of my head are the leading and trailing but they have "L" or "T" on the box.

and the trailing plug has a green band on it where the leading does not

Jul 22, 2003 | 11:50 PM

#20

Dan H

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From: San Francisco, CA

Quote:

Originally posted by ilike2eatricers
Is that error really in the haynes manual? Wow that is surprising that such a widely used manual has such a critical error that might cause a car to run like crap.

easy way to remember:
trailing=top
leading=lower
T1=top front rotor T2 top rear rotor
L1=lower front rotor L2 lower rear rotor

Yup! I couldn't remember off the top of my head (even though I've changed spark plugs before) so I just took a quick reference in my Haynes manual. I have the 86-91 version and it says on page 54 and I quote, "leading plugs go into the upper spark plug holes and trailing plugs go in the lower hole."

Then I looked up a wiring diagram and saw that I was wrong.

Jul 22, 2003 | 11:59 PM

#21

rx7raca

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From: ct

Quote:

Originally posted by Black13B
What number are they?

Should be:

2x BUR9EQ's
2x BUR7EQ's

i heard for better power responce you should get all bur9eq's.

is this true? is it that the leading plug makes a bigger spark?or the trailing makes a bigger spark? whats the difference between these plugs?

Jul 23, 2003 | 12:24 AM

#22

rotarydrifter

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From: cali

So wait i got screwed by kreagan!!! they gave me all ngk bur7eq's. is this a big problem, And should get all bur9's or bur7's or both?

Jul 23, 2003 | 12:50 AM

#23

Avatar

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From: Australia

It comes down to how you drive and engine condition, if you get stuck in traffic then 8 or 7 are fine, if it's all freeway crusing then 9

If your engine is on the older side, then 9 will not last as long especially if you get stuck in traffic.

Jul 23, 2003 | 01:33 AM

#24

rotarydrifter

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From: cali

thanks, well i haev curently all 7's but i think they gave me all trailing or all leading, and i didnt notice, ok ill admit i didnt know, is this really bad or what? the car seems to run just like before.