old fuel in lines
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Elder User
Joined: Aug 2005
Posts: 831
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From: Katy, Texas
old fuel in lines
I dropped my tank and drained it, and put it back, but I think all the old nasty fuel is still in the lines. What is the easiest way to get all that out other than cranking the engine?
Freshman User
Joined: Mar 2007
Posts: 48
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From: North Carolina
I think there was a comment on the other thread about removing the filter and letting the fuel go into a cool whip type container. I would do that and watch for the clean fuel to flow out.
Bob
Bob
Elder User
Joined: Oct 2005
Posts: 597
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From: West Palm Beach, Florida
You are getting really close now. Soon to be "On the Road Again"
You can pressurize the tank by taking an air gun and wrapping a couple of shop rags around it and putting it in the mouth of the fuel tank filler neck. You don't need much air at all I think that if you take the line off the fuel pump and blow just a little in the tank it will flow because the fuel pump is very low and gravity should take over. The fuel pump is down low on the passenger side of the front of the engine. It is quite easy to get at from underneath. Just undo the line that goes back to the tank switching valve and it will probably just start flowing out slowly. Oh yeah, if you let the fuel sit for a few days that you pulled out of the tank it will separate into clean fuel on top and a thin layer of water and dirt and rust on the bottom. Then you can pour off the clean fuel and mix it back in to the tank and use it. Just be careful to not dump the grunge back in. I usually let it sit twice after pouring off the clean stuff and then I pour it through a shop rag when I put it back in the tank and any moisture or dirt stays in the shop rag.
More Turbo
Joined: Aug 2006
Posts: 581
Likes: 72
From: Double Oak, TX
if you use an air hose to pressureize your tank, make sure you drain the water from your air compressor first. the last thing you want to do is put more moistor or water back into your tank. you could also use the output side of a shop vac to put pressure into you tank.
if you can get to your fuel lines easy enough, just put an air hose on the end of the hoses with both ends disconnected.
if you can get to your fuel lines easy enough, just put an air hose on the end of the hoses with both ends disconnected.
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Elder User
Joined: Aug 2005
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From: Katy, Texas
yah I will try that, yah I've got the old fuel sitting an an old 25 gallon oil drum. We have a bunch of them that we use around the garage for rag bins and trash cans so i jus took one and put the fuel in it. The other thing I am worrying about is my rear tank.....it was half full so I didnt bother dropping it, but what can I use to get that water out? I bought some stuff at NAPA for diesel's that removes water, but I don't know if I should put way more than the recommended ammount or what. Someone said putting 6 times the ammount of injector cleaner will clean the injectors and IP right up is this true?
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Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
You can use a little air pressure to drain most of the fuel out of the rear tank as well.
If it has much water in it I would drop the tank and get it all out of that one as well.
No sense in cleaning out all the fuel system except the back tank.
The first time you hit the tank selector valve you will be right back where you are now.
If it has much water in it I would drop the tank and get it all out of that one as well.
No sense in cleaning out all the fuel system except the back tank.
The first time you hit the tank selector valve you will be right back where you are now.
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