plugging fuel lines
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plugging fuel lines
I'm thinking about eliminating the front tank in my truck. Is plugging the fuel lines to them really as easy as putting a bolt in the line and clamping it down? I'm not concerned with saving the line fittings or putting another tank back in, I can't afford to fill both tanks at once anyway.ThanksTrevor
Elder User
Joined: Dec 2006
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From: Hillsboro, OR
Check out this post. Go up to the top of the third page for the instructions.
https://www.ford-trucks.com/forums/7...ml#post6079271
https://www.ford-trucks.com/forums/7...ml#post6079271
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Thanks, but it's pretty confusing to me. My truck is a 90 and only has 2 lines going to the front tank. Can I just cut the fittings off of them and plug them? I'm not sure if they're just rubber line or plastic though.
Elder User
Joined: Dec 2006
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From: Hillsboro, OR
Yes, that is what Tom was saying in the other post. His writeup allows you to save the fittings but if you do not want to save them, you can just cut the lines and plug them.
When working on the fuel system, you should have a fire extinguisher handy or you may end up on the evening news.
When working on the fuel system, you should have a fire extinguisher handy or you may end up on the evening news.
Elder User
Joined: May 2007
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From: Solon, Ohio
Trevor, I believe on your truck you have two low pressure pumps, one in each tank.Two lines from your rear tank along with two lines from your mid tank travel along the rail to a pressure activated switch/diverter located under the drivers door then into a third high pressure pump then up to the fuel rail on the engine.
I think you can disconnect the two rear lines at the diverter and cap off the two nipples on the diverter. Perhaps a small "U" rubber jumper from one nipple to the other.
I think you can disconnect the two rear lines at the diverter and cap off the two nipples on the diverter. Perhaps a small "U" rubber jumper from one nipple to the other.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
The rail mounted valve assembly disappeared after '89, a '90 will have high pressure pumps in the tanks only. These lines are easy to plug if you don't cut them, all you need is a short stud of appropriate size and a grinder. You cut the threaded end off and shape the nut so the clip on the fuel lne will keep it in place. This isn't the exact right size stud for this particular fuel line but it should give you an idea what to do. The end on the fuel lines on my '90 are a bit different than this, the 3/8" plug shown does fit those lines correctly, and I ran without the rear tank for several years with no leaks at all.
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Joined: May 2007
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From: Solon, Ohio
Woops,...........My Bad
When he stated he thought maybe he had plastic lines I forgot he also stated he had a 90.
When he stated he thought maybe he had plastic lines I forgot he also stated he had a 90.
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that makes me feel smart lol i thought the intank pumps were high pressure so i ran a new larger return line to accomadate a carb. and ran -an line from the what i know now is the high pressure pump that i thought was a fuel filter or some crap i could have just ran the lines around it and avoided the return line and my $120 regulator
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