intake runner vacuum lines cut on 1,5,& 2

[Doc X]

Why are the vacuum lines to the base of the intake runner cut and plugged on cylinders 1, 5, & 2?
I found that with the spark plug covers off.
doc X

[Chrisj CMA]

because those ports are not needed/used for anything.......if they werent plugged theyd be "vacuum leaks"

[Doc X]

Thank You chrisj,
Doc X

[Colin]

because those ports are not needed/used for anything.......

Not quite accurate you use there ports if you want to sync your carbs but in normal running they don't need anything connected to them, make sure the caps are good and not perished / cracked though.

[shortleg]

  Also means that they only had to make one mold for
the runners and one part number.
         Shortleg[Dave]

[Farther]

  Also means that they only had to make one mold for
the runners and one part number.
         Shortleg[Dave]

That would seem logical but does not usually apply in my opinion.  Otherwise I would think that there would be one ICM, one set of carb springs, one fuel tank, etc.

[shortleg]

  But still allows them to use parts across the different models.
             Shortleg[Dave]