Guys,
I've own several airplanes with FI and am aware of backfiring issues if throttle is pulled rapidly on descent. Here's my scenario, I'm running a recently overhauled Bendix fuel servo, flow divider and injectors. I can pull throttle slow and get it down to only an occasional backfire but the problem is that it's backfiring through the induction system and deforming my air filter. I've heard this was a lean condition and have tried to richen it up a bit. I've adjusted the idle mixture to the rich extremes and still cannot get an rpm rise when ICO is pulled. I'm striving for a 15 - 25 rpm surge but am unable to get it to rise any when I pull mixture. Can I adjust the mixture to get more travel toward the rich side? I've checked for induction tube and exhaust leakage, anything I'm missing or forgot to check? Any comments or help welcomed.
Thanks
I've own several airplanes with FI and am aware of backfiring issues if throttle is pulled rapidly on descent. Here's my scenario, I'm running a recently overhauled Bendix fuel servo, flow divider and injectors. I can pull throttle slow and get it down to only an occasional backfire but the problem is that it's backfiring through the induction system and deforming my air filter. I've heard this was a lean condition and have tried to richen it up a bit. I've adjusted the idle mixture to the rich extremes and still cannot get an rpm rise when ICO is pulled. I'm striving for a 15 - 25 rpm surge but am unable to get it to rise any when I pull mixture. Can I adjust the mixture to get more travel toward the rich side? I've checked for induction tube and exhaust leakage, anything I'm missing or forgot to check? Any comments or help welcomed.
Thanks