Cleaning out fuel tank - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rebelracer79 · 06-19-2013, 07:49 PM

I've got a 69 Chevy that I bought a couple of months ago. It had been sitting for a few years, and I had a lot of trouble getting it to run smooth, eventually I put on an edelbrock 750 carb and got the bugs smoothed out, but found another problem. All kinds of junk keeps plugging up my filter, it just keeps coming. It does it whether its low on fuel or has a full tank. Is there a good way to flush the system out? It has around 6-7 gallons in it right now if that makes a difference.
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PanelDeland · 06-19-2013, 08:21 PM

Drain the tank and pull it.Put a piece of chain and some laundry soap in it.Tumble it around for a while.Then drain it and flush really well with water.Pull the sending unit when you remove the tank and tape it up with duct tape.After you get it as clean as you can check for leaks,with enough water in it to rust it may have pinholes.Then reinstall and add a bit of rubbing alcohol to the first fuel.Replace the rubber fuel lines and blow out the metal ones when the tank is clean ,before you put fuel in and start it.You'll be better off if you prime it to start.If there's that much debris,you may need a new fuel pump but you can try it with what you got.

mgchevyparts · 06-19-2013, 08:24 PM

Take the tank to a radiator shop to have it "boiled" out.

06-19-2013, 07:49 PM	#1
rebelracer79 Registered User Join Date: Oct 2005 Location: Chouteau, OK Posts: 9	Cleaning out fuel tank I've got a 69 Chevy that I bought a couple of months ago. It had been sitting for a few years, and I had a lot of trouble getting it to run smooth, eventually I put on an edelbrock 750 carb and got the bugs smoothed out, but found another problem. All kinds of junk keeps plugging up my filter, it just keeps coming. It does it whether its low on fuel or has a full tank. Is there a good way to flush the system out? It has around 6-7 gallons in it right now if that makes a difference. Posted via Mobile Device

06-19-2013, 08:21 PM	#2
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: Cleaning out fuel tank Drain the tank and pull it.Put a piece of chain and some laundry soap in it.Tumble it around for a while.Then drain it and flush really well with water.Pull the sending unit when you remove the tank and tape it up with duct tape.After you get it as clean as you can check for leaks,with enough water in it to rust it may have pinholes.Then reinstall and add a bit of rubbing alcohol to the first fuel.Replace the rubber fuel lines and blow out the metal ones when the tank is clean ,before you put fuel in and start it.You'll be better off if you prime it to start.If there's that much debris,you may need a new fuel pump but you can try it with what you got. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

06-19-2013, 08:24 PM	#3
mgchevyparts Registered User Join Date: Feb 2013 Location: Upland, Calif Posts: 698	Re: Cleaning out fuel tank Take the tank to a radiator shop to have it "boiled" out.



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