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  1. Mike_H

    Afterfire / Popping during run up - 4 into 1

    I have been chasing down a gremlin for 2 weeks now with no luck. During run up I started getting an afterfire in the form of one to two pops out of the exhaust (thanks for clear floorboards) predominantly on the left mag at 1800rpm. Tonight I ran it up to 2200 and found it turns into a constant...
  2. Mike_H

    O-320 aux fuel pump flow restriction

    I'm trying to understand the impacts of stepping down a 3/8 fuel line to a 1/8NPT inlet and outlet for a new fuel pump (Facet 40313). The system will remain 3/8" lines everywhere except the in/out of the boost pump. The current system is all 3/8" line and being free flowing in series this...
  3. Mike_H

    Bendix PS5C Starting Procedures O-320

    What sort of blackmagic does it take to properly start a PS5! Previously only hot starts were an issue but now we're having issues with cold starts as well. I've had luck in the past starting it similar to a small continental with an accelerator pump, using two pumps of throttle then bring it...