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Discussion Topic:
gas tank noise
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46coupe |
04-05-2017 @ 5:47 PM
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Member
Posts: 273
Joined: Oct 2015
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We finally went for a short drive yesterday. It was great. Still doing test runs checking out the mechanicals. When we got home and got out of the car, I heard what sounded like metal sliding side to side in the gas tank. The tank is new and was installed by the previous owner. I've had no noises prior to this from the tank. I'm going to pull the sending unit tomorrow and see if I can find anything. Any ideas what it might be? 46 coupe
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46coupe |
04-06-2017 @ 9:39 AM
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Member
Posts: 273
Joined: Oct 2015
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I inspected the inside of the tank through the sending unit hole--- not much help. Do these replacement tanks have baffles or some other object inside that could have come loose? If nothing else I can drain the tank, remove it and have it cut apart to find out what happened inside, which I am trying to avoid. Any help or comments are appreciated.
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supereal |
04-06-2017 @ 11:46 AM
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Senior
Posts: 6819
Joined: Oct 2009
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Be sure that the noise is actually from the gas tank before you go to the considerable trouble of taking it down. There are baffles in the tank, but they are usually well secured. It is possible that the float arm of the sender is rubbing on a baffle. With repro senders it is often necessary to reorient the sender in the tank to clear any obstructions and/or bend the float arm. The float arm moves around as the gas sloshes, even though the gauge does not. We have had to modify the float arm to make it fit some tanks.
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46coupe |
04-06-2017 @ 12:30 PM
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Member
Posts: 273
Joined: Oct 2015
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Thanks for the reply. Sending unit has been in for a year with no problem. This noise sounds like metal sliding on metal. I can rock the car and make it make that noise. It's irritating more than anything and it just started.
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46coupe |
04-06-2017 @ 4:06 PM
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Member
Posts: 273
Joined: Oct 2015
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I took the sending unit out, rocked the car, and the noise is still there. Sounds like metal sliding on metal. Any thoughts or ideas welcomed.
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stanwalker |
04-06-2017 @ 5:36 PM
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Member
Posts: 2
Joined: Mar 2011
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How about sending a long flexible magnetic pick up stick in through the sending unit hole and see what you can pick up?
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Drbrown |
04-06-2017 @ 9:23 PM
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Senior
Posts: 578
Joined: Nov 2013
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I assume its a steel (plain or stainless) tank. .... a vinyl type tank would not make that kind of sound. Your description makes it sound like a baffle plate came loose, or reaching for ideas, someone left a piece of sheet metal or some kind of metal object inside the tank when it was fabricated (first time for everything) and it recently came loose. Something may have dropped thru the fill pipe or sender hole at one time ? i.e. a tool. stanwalker's idea re a magnet good. I typically resort to a cut and folded-out clothes hanger to fish around in dark places .... has save me a bunch of times. If your fill pipe is removable, try removing it and fishing from there, before removing the tank
This message was edited by Drbrown on 4-6-17 @ 9:26 PM
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46coupe |
04-07-2017 @ 6:33 AM
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Member
Posts: 273
Joined: Oct 2015
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Yes it does sound like a piece of sheet metal sliding around. I'll do some fishing but if I can't retrieve it I thought I would attach a magnet to the outside of the tank and keep the piece "trapped" until I can get the tank removed. I'll check to see if the filler pipe can be removed also. Thanks to both of you for the ideas.
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CaliforniaBorn36 |
04-07-2017 @ 1:41 PM
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Member
Posts: 57
Joined: Jan 2013
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If you can get it to stick to a magnet, maybe you could use that to slide it to where you can see what it is. Or, if the magnet holds it. maybe that is your final answer, just leave the magnet attached. Sure beats tearing apart and cutting.
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46coupe |
04-07-2017 @ 5:39 PM
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Member
Posts: 273
Joined: Oct 2015
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I thought of that too. Hopefully I can find a good magnet. Will explore the possibilities later next week. Thanks for the help.
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