Fuel psi - Zenith Aircraft Builders and Flyers2024-03-29T14:28:06Zhttps://zenith.aero/forum/topics/fuel-psi?commentId=2606393%3AComment%3A693234&feed=yes&xn_auth=noDoug, I too was indicating lo…tag:zenith.aero,2019-09-26:2606393:Comment:6932342019-09-26T02:57:44.703ZTom Sullivanhttps://zenith.aero/profile/tomsullivan
<p>Doug, I too was indicating low FP so after reading this I checked and had the 50psi Kavlico unit programmed into Skyview while I actually have the 75 psi unit. Now shows 42 psi. Thanks very much for pursuing this and posting your finding. Tom</p>
<p>Doug, I too was indicating low FP so after reading this I checked and had the 50psi Kavlico unit programmed into Skyview while I actually have the 75 psi unit. Now shows 42 psi. Thanks very much for pursuing this and posting your finding. Tom</p> Hey guys thanks for the sugge…tag:zenith.aero,2019-06-28:2606393:Comment:6821592019-06-28T22:12:40.025ZDoug Malloyhttps://zenith.aero/profile/DougMalloy
<p>Hey guys thanks for the suggestions and advice. Very much appreciated. I did call Ray at UL and told him my story. He pretty much knew exactly what the problem was. He told me to go to the sensor mapping page on my Skyview and check to see what flavor of Kavlico sensor was being used for fuel pressure. I saw that it was the Kavlico 50 psi sensor but remembered that I had actually ordered the 75psi version. I changed the value and then tried both pumps and voila--I was getting 42…</p>
<p>Hey guys thanks for the suggestions and advice. Very much appreciated. I did call Ray at UL and told him my story. He pretty much knew exactly what the problem was. He told me to go to the sensor mapping page on my Skyview and check to see what flavor of Kavlico sensor was being used for fuel pressure. I saw that it was the Kavlico 50 psi sensor but remembered that I had actually ordered the 75psi version. I changed the value and then tried both pumps and voila--I was getting 42 psi!</p>
<p>I think that crisis has been averted. Thanks again guys for helping out!</p> Hi again,
Just curious if y…tag:zenith.aero,2019-06-27:2606393:Comment:6819812019-06-27T23:11:00.431ZRobert Riathttps://zenith.aero/profile/RobertDRiat
<p>Hi again,</p>
<p> Just curious if your fuel pressure is good before you start your engine, if so, does it drop at idle or under power? Also, your FADEC should be switching pumps if the main one is not holding pressure - have you tried manually switching pumps? Several questions on why you are getting low readings, but if the engine was performing correctly with the first 3 flights, I would start by checking with a different fuel pressure tester. Just my thoughts....</p>
<p>Hi again,</p>
<p> Just curious if your fuel pressure is good before you start your engine, if so, does it drop at idle or under power? Also, your FADEC should be switching pumps if the main one is not holding pressure - have you tried manually switching pumps? Several questions on why you are getting low readings, but if the engine was performing correctly with the first 3 flights, I would start by checking with a different fuel pressure tester. Just my thoughts....</p> My fuel pressure maintains a…tag:zenith.aero,2019-06-27:2606393:Comment:6818142019-06-27T22:13:09.196ZRobert Riathttps://zenith.aero/profile/RobertDRiat
<p>My fuel pressure maintains a fairly constant 43-44 psi with either pump. I don’t have a header tank and my supply lines are 3/8 id. I have a 350is in my stol 750 with100 hours on it. I think I would be talking to UL if I were you, as 29 is low.</p>
<p>My fuel pressure maintains a fairly constant 43-44 psi with either pump. I don’t have a header tank and my supply lines are 3/8 id. I have a 350is in my stol 750 with100 hours on it. I think I would be talking to UL if I were you, as 29 is low.</p>