Akashi_Fox

So I have a 90' fc with a 13b in it and I was wondering how to change the spark plugs and which ones I need.

I went to autozone and they asked if I needed the trailing ones or the leading ones, and I had no idea so I ended up with 2 leading ones. When I got home come to find out it has 4 spark plugs.

I saw a video on youtube and they said the top 2 are the trailing and the bottom 2 are the leading. Is this true?

Thanks in advance

diabolical1

iTrader: (3)

welcome to the board.

yes. there are a total of 4 spark plugs: 2 leading and 2 trailing. trailing plugs are generally a little colder, plus they should have the "T' on the box. get NGK plugs, even if they have to be ordered.

... and yes, correct: Trailing = Top and Leading = Bottom.

misterstyx69

iTrader: (142)

2 of the BUR7EQ (leading plugs,lower holes)

2 of the BUR9EQ.Trailing Plugs,TOP holes)

those are Ngk brand plugs,standard for 13 engines.
Tip.Leading is L..Lower..
Trailing is TOP ..T
easy peasy huh?

Evil Aviator

The letter is the easiest way to remember:
T = Top = Trailing
L = Lower = Leading

This link explains the spark plug choices pretty well:
Mazdatrix - Spark Plugs

Akashi_Fox

Thanks every one, now I just gotta figure out how to take em out and put em back in without breaking anything XD