Holley 870 street advenger - junk?

yellow rose said

Uhhhhh a lawn mower won’t run on a .014 idle feed restriction. Stop looking at the EGT’s. They respond way too slow and they will jack you up.


You have enough pump to support 1000 HP. I doubt a .070 bypass t is near enough. You have multiple issues, none of which sound like a carb issue.

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These carbs do not have removable or adjustable idle jets or air bleeds. The restriction is inserted in the jet in the metering block.
Belt pumps are the best thing since sliced bread. Never had a problem with this setup so don't think that is the problem but still ready to look further at the return jet