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Old 06-29-2021, 07:56 PM   #1
jeffmorris
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Straight 4-cylinder engines

Do the outer pistons go up and inner pistons go down on all straight 4-cylinder engines? Why not pistons #1 and #3 go up and pistons #2 and #4 go down?
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Old 06-30-2021, 03:56 PM   #2
aleekat
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Re: Straight 4-cylinder engines

Quote:
Originally Posted by jeffmorris View Post
Do the outer pistons go up and inner pistons go down on all straight 4-cylinder engines? Why not pistons #1 and #3 go up and pistons #2 and #4 go down?
1-3-4-2 is the normally firing order for balancing.
https://www.youtube.com/watch?v=OGj8OneMjek
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