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Re: Does anyone make a fuel sender that works?? [Re: TJP] #3229118 04/25/24 12:26 PM 04/25/24 12:26 PM
Joined: Dec 2014 Posts: 5,805 ohio R ruderunner master
ruderunner master R Joined: Dec 2014 Posts: 5,805 ohio	Originally Posted by TJP [quote=ruderunner]Theory on why senders read full during a dry test vs actual use. We're adjusting the senders and assuming the float will reach the top of the tank. We're forgetting about air space above the fuel and the fact that the float won't touch the top of the tank in operation. If someone is in this process, try setting the float for an inch gap from the top of the tank. Why do you believe there is air space at the top of the tank? IF the filler neck on say a 68-70 Charger is full of fuel, how could there be an air space ? Whether the neck is full or not, there's still going to be air pockets in the tank. Even the vent lines aren't completely against the top of the tank. Either way, the test is simple enough to try. Last edited by ruderunner; 04/25/24 12:27 PM. Angry white pureblood male

Re: Does anyone make a fuel sender that works?? [Re: moparx] #3229120 04/25/24 12:51 PM 04/25/24 12:51 PM
Joined: Jan 2011 Posts: 15,855 Central Florida larrymopar360 Stud Muffin
larrymopar360 Stud Muffin Joined: Jan 2011 Posts: 15,855 Central Florida	Originally Posted by moparx "Why do you believe there is air space at the top of the tank? IF the filler neck on say a 68-70 Charger is full of fuel, how could there be an air space ?" i have screwed up filling up my charger till the fuel ran all over the quarter, and out the vent line [which dumps into the frame rail] making a real mess. i don't think there was any air that time. [sure stayed on full for long time.] however, that was tons of years ago, and i'm super careful these days filling it up. also, the mess was during the time i had the original tank and sender in it. I've had nothing but problems filling older cars with gas and the spill over. I don't know if it's in the design of newer pump nozzles or what, but now I put my ear down and listen for it getting full and stop manually. Facts are stubborn things.

Re: Does anyone make a fuel sender that works?? [Re: larrymopar360] #3229148 04/25/24 03:45 PM 04/25/24 03:45 PM
Joined: Jan 2003 Posts: 20,762 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,762 A collage of whims	It's the curse of the A-bodies - learned long ago to listen to the rising tide of gas...

Re: Does anyone make a fuel sender that works?? [Re: wingman] #3229225 04/25/24 09:49 PM 04/25/24 09:49 PM
Joined: Jan 2003 Posts: 15,347 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,347 Omaha Ne	Originally Posted by wingman Has anyone had success using a device like this inline to compensate for their incorrect aftermarket sender/factory gauge? I've heard from some that they work, and others that they do not. Basically an adjustable resistor I assume? https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/mode=prod/prd748.htm they do work if you're fairly close (within 1/4 tank). I've installed quite a few as it sure beats filling, emptying, tweaking the float arm and repeating with no gain. A bit of a PITA due the wiring etc. but less so than the mentioned circle jerk www.tandmautomotive-omaha.com

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