347

My holley has externally adjustable floats and sight glasses.
Do I adjust the level with the sight glasses in or out?

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BLKEBXR8

Set float level with sight glasses in . The reason they were invented for is so the fuel doesn't run all over the manifold when performing this procedure.
You don't want a fire on the nice new engine .

347

Where do I set the level on the sight glass?

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What ever I have will never be enough !
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BLKEBXR8

As soon as you can see the fuel through it , ( toward the bottom edge )

9psi EB

I have heard clear sight glasses arent a good idea because they are prone to cracking / breaking off around where the o-ring sits?

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TD302

Very true. Thats why you never take them out :) Plus they also discolour after awhile too.

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