Gas Tank Noise - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ryan5O · 09-26-2011, 10:46 PM

Ive got a rattling in my gas tank, just enough to remind me of the tank behind the seat. Every time I a take a turn it sounds like a bolt or nut rolling around in there. Anyone have any tricks to get something like that out? I dont want to remove tank if I dont have to.

bigbadchev72 · 09-26-2011, 11:04 PM

Remove the sender and shine a light in there, If its a bolt you may be able to use an extending magnet and a wire to move it to where you can grab it with the magnet

BMERDOC · 09-26-2011, 11:24 PM

Unless you remove the tank and shake it out the magnet is probably gonna be your best bet. If nothing else, pull the sending unit, drop a magnet in the tank and let it catch it. You wont be able to dig it out but the noise will stop.

Ryan5O · 09-27-2011, 12:01 AM

Both are good ideas. I hadnt thought about just dropping the magnet in there and leaving it.

BMERDOC · 09-27-2011, 01:05 AM

Never know what it could be. Maybe its metal...maybe a neighborhood kid dropped a rock in there. I can only imagine that its gotta be irritating!

**Ironhorse** · 09-27-2011, 07:40 AM

Had a similar problem in my '71 4x4 with the in-cab tank. Making a hard right or left turn I could hear something rattling inside, normal driving it was quiet. When I moved my tank to under the bed I finally found the culprit. Some how a piece of 1/2" threaded pipe about an inch long made it's way into the tank. Looked like it had been there a long time.

Try the magnet trick, maybe you'll get lucky and fish it out.

my67c20 · 09-27-2011, 08:29 AM

Heres one for you. When i bought my truck the p.o. had rigged the ignition to work with a screwdriver. When he gave me the keys he stated that they are pretty useless cause they don't work with the switch that he rigged. On the way home everytime i turned something rolled around in the tank. After finally running enough gas out i decided to pull the tank and find out what the heck was in there. Low and behold it was the ignition switch for the keys i got. Took it out cleaned it up, have not had a problem in 10 years. So who knows could be some gold.

cdowns · 09-27-2011, 08:36 AM

i've had a bunch of different tanks that the floats off the sending units have gone bad and came loose and previous owners just put new floats on and left the old ones in the tank// most i've ever had was 3loose floats in the tank

68gmsee · 09-27-2011, 09:46 AM

Quote:

Originally Posted by cdowns

i've had a bunch of different tanks that the floats off the sending units have gone bad and came loose and previous owners just put new floats on and left the old ones in the tank// most i've ever had was 3loose floats in the tank

This was going to be my guess. Aren't they bronze?

Since these tanks are exposed to the public and a lot of us don't have a locking cap, it could be just about anything. In the old days, some kids would dump a marble or two in there to irritate owners. Never know what it is.

09-26-2011, 10:46 PM	#1
Ryan5O Registered User Join Date: Mar 2011 Location: Spokane WA Posts: 198	Gas Tank Noise Ive got a rattling in my gas tank, just enough to remind me of the tank behind the seat. Every time I a take a turn it sounds like a bolt or nut rolling around in there. Anyone have any tricks to get something like that out? I dont want to remove tank if I dont have to. __________________ USCG "Support Search & Rescue, Get Lost"

09-26-2011, 11:04 PM	#2
bigbadchev72 People know me Join Date: Jun 2007 Location: Hermiston, oregon Posts: 840	Re: Gas Tank Noise Remove the sender and shine a light in there, If its a bolt you may be able to use an extending magnet and a wire to move it to where you can grab it with the magnet __________________ 1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels 1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels

09-26-2011, 11:24 PM	#3
BMERDOC Registered User Join Date: Jun 2011 Location: Richmond,Va Posts: 2,934	Re: Gas Tank Noise Unless you remove the tank and shake it out the magnet is probably gonna be your best bet. If nothing else, pull the sending unit, drop a magnet in the tank and let it catch it. You wont be able to dig it out but the noise will stop. __________________ Nick Carter 1967 C10 Short bed Fleetside Project Cheap Thrills! 2WD C10 Modern/Performance Alignments Easiest Alignment Ever!

09-27-2011, 12:01 AM	#4
Ryan5O Registered User Join Date: Mar 2011 Location: Spokane WA Posts: 198	Re: Gas Tank Noise Both are good ideas. I hadnt thought about just dropping the magnet in there and leaving it. __________________ USCG "Support Search & Rescue, Get Lost"

09-27-2011, 01:05 AM	#5
BMERDOC Registered User Join Date: Jun 2011 Location: Richmond,Va Posts: 2,934	Re: Gas Tank Noise Never know what it could be. Maybe its metal...maybe a neighborhood kid dropped a rock in there. I can only imagine that its gotta be irritating! __________________ Nick Carter 1967 C10 Short bed Fleetside Project Cheap Thrills! 2WD C10 Modern/Performance Alignments Easiest Alignment Ever!

09-27-2011, 07:40 AM	#6
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,077	Re: Gas Tank Noise Had a similar problem in my '71 4x4 with the in-cab tank. Making a hard right or left turn I could hear something rattling inside, normal driving it was quiet. When I moved my tank to under the bed I finally found the culprit. Some how a piece of 1/2" threaded pipe about an inch long made it's way into the tank. Looked like it had been there a long time. Try the magnet trick, maybe you'll get lucky and fish it out. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

09-27-2011, 08:29 AM	#7
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 507	Re: Gas Tank Noise Heres one for you. When i bought my truck the p.o. had rigged the ignition to work with a screwdriver. When he gave me the keys he stated that they are pretty useless cause they don't work with the switch that he rigged. On the way home everytime i turned something rolled around in the tank. After finally running enough gas out i decided to pull the tank and find out what the heck was in there. Low and behold it was the ignition switch for the keys i got. Took it out cleaned it up, have not had a problem in 10 years. So who knows could be some gold.

09-27-2011, 08:36 AM	#8
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Gas Tank Noise i've had a bunch of different tanks that the floats off the sending units have gone bad and came loose and previous owners just put new floats on and left the old ones in the tank// most i've ever had was 3loose floats in the tank __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



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