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Where do vacuum readings need to be taken from? the test port on the mixer?

I put the spark testors on it, nice crisp blue spark throughout all speeds, even when the engine is coughing and sputtering.
the only thing I haven't changed is the diaphragm and spring in the mixer. I have seen other diaphragms but never another spring? I did put the red spring in the regulator.
This thing has me confused.
  • Posted 2 May 2018 23:48
  • By ryker_c
  • joined 15 Sep'17 - 23 messages
  • Iowa, United States

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