looking for some info,
got a 19 G25 with NISA and looking to understand how the exhaust by pass works, i dont see any kind of actuators like a captains call system so does it work on pressure differentials? i have a tapping noise I'm tracking down that sounds a lot like a exhaust flapper well in drive- wont do it in neutral or reverse. goes with eng speed in drive till i eventually cant hear it, its not drive line noise and its not bottom end noise - very familiar with those noises im thinking its prop wash forcing exhaust out the over flow port but would love to know how it works
got a 19 G25 with NISA and looking to understand how the exhaust by pass works, i dont see any kind of actuators like a captains call system so does it work on pressure differentials? i have a tapping noise I'm tracking down that sounds a lot like a exhaust flapper well in drive- wont do it in neutral or reverse. goes with eng speed in drive till i eventually cant hear it, its not drive line noise and its not bottom end noise - very familiar with those noises im thinking its prop wash forcing exhaust out the over flow port but would love to know how it works