Comobowz Posted June 25, 2022 Report Share Posted June 25, 2022 I'm hoping that the MS collective brain power can help me troubleshoot. I have an issue with newly installed (January) CIES senders attached to G500Txi EIS on a 1998 Ovation where specifically with the right tank, I'm seeing no fuel level movement on the right tank gauge until I burn approximately 10-11 gallons. Left tank works great, but on the right (green line in the graph below) it remains pegged at 44.5 Gallons (89 total usable) until it reaches approximately 34 gallons, at which point it drops to that level in a period of about 1:30-2 minutes as seen in the graph. They have been calibrated twice with the issue remaining the same, as well as checked for freedom of movement. I'm guessing it's an issue with the right outboard sender, however it has been removed and tested outside the aircraft to validate that it was returning data. Any suggestions? Including @fuellevel in hopes that you might be able to point me in the right direction. Thanks in advance! Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted June 25, 2022 Report Share Posted June 25, 2022 The outboard senders sometimes hang up. They (or just the one giving you problems) most likely need to be adjusted (bent) and recalibrated. 1 Quote Link to comment Share on other sites More sharing options...
MIm20c Posted June 26, 2022 Report Share Posted June 26, 2022 Did you utilize the voltage or resistive input? Did you run new wires or tie into existing? I’d start with the wiring… Quote Link to comment Share on other sites More sharing options...
carusoam Posted June 26, 2022 Report Share Posted June 26, 2022 Sounds like a good question for @fuellevel… Note for @fuellevel… Some avatar graphics have gotten lost… you might want to update yours to put your Ceis logo back in place… Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Comobowz Posted June 27, 2022 Author Report Share Posted June 27, 2022 On 6/25/2022 at 6:49 PM, LANCECASPER said: The outboard senders sometimes hang up. They (or just the one giving you problems) most likely need to be adjusted (bent) and recalibrated. @LANCECASPER, that was actually my first thought and what they checked. Per the shop, it isn't hanging up and has good freedom of movement. Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted June 27, 2022 Report Share Posted June 27, 2022 29 minutes ago, Comobowz said: @LANCECASPER, that was actually my first thought and what they checked. Per the shop, it isn't hanging up and has good freedom of movement. Exactly what the shop who installed mine said . . lol Quote Link to comment Share on other sites More sharing options...
Comobowz Posted June 27, 2022 Author Report Share Posted June 27, 2022 33 minutes ago, LANCECASPER said: Exactly what the shop who installed mine said . . lol In this case, at least it wasn't the shop that did the original install, but instead my shop that I paid to troubleshoot it. Unfortunately, we don't yet have resolution as of yet. I think it's going to require CIES weighing in. 1 Quote Link to comment Share on other sites More sharing options...
kevinw Posted June 30, 2022 Report Share Posted June 30, 2022 I'm having a similar problem with mine. My right side sticks at 32 gallons every time until the fuel level drops to about 28. It's getting hung up as @LANCECASPER said and needs to be bent. Waiting until annual in October. I hear this is a common issue. Quote Link to comment Share on other sites More sharing options...
haymak3r Posted July 1, 2022 Report Share Posted July 1, 2022 Going to the shop in about an hour to install cies in to my J. I've read the few threads on here about bending the arms, installing upside down, etc. Any other pointers?? Quote Link to comment Share on other sites More sharing options...
flysamo Posted July 3, 2022 Report Share Posted July 3, 2022 had same problem, unit was hanging up, just needs adjustment for movement Quote Link to comment Share on other sites More sharing options...
Utah20Gflyer Posted July 10, 2022 Report Share Posted July 10, 2022 When you were calibrating the senders did the readings from the sender change from 34 gallons to 44.5 gallons? Not sure about the GXI 500 but for my aerospace logic gauge you create a table of the sender readouts with a data point every 2 gallons. Quote Link to comment Share on other sites More sharing options...
fuellevel Posted July 11, 2022 Report Share Posted July 11, 2022 Apologies - we ran these and other issues by the FAA a year and a half ago. Long story short - we don't use the same pivot point and a different float both of these are for good reasons. There was a dimension of confusion and we had a new FAA engineer. The FAA made us prove that we as closely matched the original senders by doing a comparative drawing or installation model. While we pointed out that the ideal installation for the Mooney and others would have some different dimensions and characteristics, we didn't convey the idea to this engineer. We want to improve fuel qty measurement and improve the installations as issues are reported back to us. So we now have new management @ the FAA and in Seattle - we are promised we will have a process and answer in getting this accomplished moving forward. While we can tell you how to bend the arms and in the future we will actually bend the arms ahead of time. We appreciate your patience - My patience is dangerously at the end of the rope. Quote Link to comment Share on other sites More sharing options...
MironV Posted July 11, 2022 Report Share Posted July 11, 2022 (edited) Would love to hear more about this as well. What is the bending required to make it work? We just had a similar issue this weekend with a brand new CIES install on an M20J where the right side is stuck at 31. Edited July 12, 2022 by MironV Quote Link to comment Share on other sites More sharing options...
Marauder Posted July 12, 2022 Report Share Posted July 12, 2022 Would love to hear more about this as well. What is the bending required to make it work? We just had a similar issue this weekend with a brand new CIES install on an M20J where the right side is stuck at 31.I created a thread a few years back called “CiES Resource Thread” (or something similar). In my F model installation (same wing as the J), I had to install one sender upside down to get it to clear.Sent from my iPad using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
M20F Posted July 12, 2022 Report Share Posted July 12, 2022 Hey sorry to be late to this thread. I am here from the FAA, how can I help? Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted July 12, 2022 Report Share Posted July 12, 2022 10 hours ago, Marauder said: I created a thread a few years back called “CiES Resource Thread” (or something similar). In my F model installation (same wing as the J), I had to install one sender upside down to get it to clear. Sent from my iPad using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
Marauder Posted July 12, 2022 Report Share Posted July 12, 2022 Too bad the pictures are all gone… thanks for posting the link!Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
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