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Discussion Starter · #1 ·
is the sparkplug firing order the same from the 1.9 to the spi?? im curious to know wat the correct order is.....
 

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Beaverboy said:
I thought every inline 4 had a 1-3-4-2 firing order. :?
Wow...is that seriously true? It makes sense, but has it been researched to the point that we know that is the smoothest way a four banger can opperate? 1,3,4,2?

What about flat fours? :p
 

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Quite a few are 1-2-4-3 - either operate smoothly.

But the 1.9 should be 1-3-4-2.

edit - Subaru's use the 1-3-4-2, but I can't figure out if it's an X or Z.. anyone have a diagram explaining how Subaru numbers their cylinders?
 
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