SwimmingDragonfly96
Well Known Member
Hey everyone,
When I first purchased my flying RV earlier this year, I had the characteristic popping on downwind when going to idle. Since then, I have taken it easy with pulling on the throttle, and I no longer get the popcorn noise. However, a different symptom has taken its place the last 50 hours or so (might have occurred after I wiggled the exhaust once and was amazed at how freely it moves).
I now get a sort of thump when I come to idle, kind of a bang that I can feel through the floorboards that repeats itself until advancing the throttle a bit, but it's not a symptom that I have seen much of on the forums. There was one person who described the same thump, but isolated it to a non vented cap on a smoke tank, which I do not have. It doesn't seem to be getting worse. 7a, o360-a1a, CS prop. Their description of the feeling, which was sort of spot on, is the thump you get in a commercial jet when they just start moving for taxi. EGT/CHT, OP, OT and all other engine parameters do not detect anything.
Any ideas?
When I first purchased my flying RV earlier this year, I had the characteristic popping on downwind when going to idle. Since then, I have taken it easy with pulling on the throttle, and I no longer get the popcorn noise. However, a different symptom has taken its place the last 50 hours or so (might have occurred after I wiggled the exhaust once and was amazed at how freely it moves).
I now get a sort of thump when I come to idle, kind of a bang that I can feel through the floorboards that repeats itself until advancing the throttle a bit, but it's not a symptom that I have seen much of on the forums. There was one person who described the same thump, but isolated it to a non vented cap on a smoke tank, which I do not have. It doesn't seem to be getting worse. 7a, o360-a1a, CS prop. Their description of the feeling, which was sort of spot on, is the thump you get in a commercial jet when they just start moving for taxi. EGT/CHT, OP, OT and all other engine parameters do not detect anything.
Any ideas?