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

eastcoastcivil · 11-10-2008, 07:25 AM

I have a 67 C20 and its been running a little rough. I decided to adjust the carb and change the fuel filter...well the fuel filter had so much dirt (which I think is rust from the tank) in it that I was surprised the carb even got fuel. I noticed the PO put a new fuel pump on it and was wondering is there any way to clean out the gas tank? Will all that dirt mess up my fuel pump? or should I just keep changing fuel filters until it cleans itself out? Any help would be great.

cdowns · 11-10-2008, 08:24 AM

check with local radiator shops to see if they "boil out"gas tank is the best solution

MotorSeven · 11-10-2008, 09:21 AM

or just buy a new tank. They can be found for under $200....it's what i had to do.

RD

68gmsee · 11-10-2008, 10:33 AM

Last summer I took mine out removed the sending unit and cleaned it with water pressure. I mainly wanted to get rid of loose rust scale and some junk on the bottom. I drained it and let it sit out in the sun to dry.

I then installed a filter before the fuel pump. (I'm posting a question regarding the last fuel filter change a month ago.)

67mater · 11-10-2008, 12:08 PM

Ijust treated my with the KBS coating tank sealer kit; $67 to my door. step 1: cleaner;degreaser and I threw some chain link in while sloshing around 2. metal ech rust converted 3. sealer.

Very happy with results and the cost versus a new tank

68gmsee · 11-10-2008, 02:46 PM

Quote:

Originally Posted by 67mater

Ijust treated my with the KBS coating tank sealer kit; $67 to my door. step 1: cleaner;degreaser and I threw some chain link in while sloshing around 2. metal ech rust converted 3. sealer.

Very happy with results and the cost versus a new tank

This is probably what I should have done in the first place. The tank I cleaned was, in fact, one I had bought new years before. I let it sit for about 5 years. They come untreated and will rust out if not used -at least mine did.

67mater · 11-10-2008, 02:50 PM

i should add the kit is good for up to a 21 gallon tank, and the sealer requires 4 DAYS to completely cure (ie no gas) and each step requires teh tank be completely dry (after having rinsed thoroughly with water). So, it's not a weekend fix.

**leddzepp** · 11-10-2008, 03:11 PM

POR 15 also sells a kit that will seal up and restore your gas tank.

11-10-2008, 07:25 AM	#1
eastcoastcivil Registered User Join Date: Apr 2007 Location: New Brunswick, Canada Posts: 201	Dirty Gas Tank Question I have a 67 C20 and its been running a little rough. I decided to adjust the carb and change the fuel filter...well the fuel filter had so much dirt (which I think is rust from the tank) in it that I was surprised the carb even got fuel. I noticed the PO put a new fuel pump on it and was wondering is there any way to clean out the gas tank? Will all that dirt mess up my fuel pump? or should I just keep changing fuel filters until it cleans itself out? Any help would be great. __________________ If your not living for something, your dieing for nothing...

11-10-2008, 08:24 AM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Dirty Gas Tank Question check with local radiator shops to see if they "boil out"gas tank is the best solution __________________ 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

11-10-2008, 09:21 AM	#3
MotorSeven Restoration Desperation Join Date: Aug 2006 Location: Tennessee Posts: 373	Re: Dirty Gas Tank Question or just buy a new tank. They can be found for under $200....it's what i had to do. RD

11-10-2008, 10:33 AM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Dirty Gas Tank Question Last summer I took mine out removed the sending unit and cleaned it with water pressure. I mainly wanted to get rid of loose rust scale and some junk on the bottom. I drained it and let it sit out in the sun to dry. I then installed a filter before the fuel pump. (I'm posting a question regarding the last fuel filter change a month ago.)

11-10-2008, 12:08 PM	#5
67mater Registered User Join Date: Sep 2007 Location: Mundelein, IL Posts: 862	Re: Dirty Gas Tank Question Ijust treated my with the KBS coating tank sealer kit; $67 to my door. step 1: cleaner;degreaser and I threw some chain link in while sloshing around 2. metal ech rust converted 3. sealer. Very happy with results and the cost versus a new tank __________________ time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro

11-10-2008, 02:50 PM	#7
67mater Registered User Join Date: Sep 2007 Location: Mundelein, IL Posts: 862	Re: Dirty Gas Tank Question i should add the kit is good for up to a 21 gallon tank, and the sealer requires 4 DAYS to completely cure (ie no gas) and each step requires teh tank be completely dry (after having rinsed thoroughly with water). So, it's not a weekend fix. __________________ time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro

11-10-2008, 03:11 PM	#8
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,013	Re: Dirty Gas Tank Question POR 15 also sells a kit that will seal up and restore your gas tank.



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