How does one clean the hard fuel lines?
Thread Starter
Instructor
Joined: Oct 2017
Posts: 149
Likes: 46
From: Lake Worth Florida
How does one clean the hard fuel lines?
I’ve a 1969 l46 coup that sat for a long time prior to my purchase. I’ve had trouble with the fuel system and have replaced all filters, carb and fuel pump. A new gas tank is on order and I’d really like to replace the fuel lines but I’ve read it’s very difficult without removing the body. So, the question is what’s the best method to flush the current lines in place?
Racer
Joined: Nov 2017
Posts: 289
Likes: 32
I’ve a 1969 l46 coup that sat for a long time prior to my purchase. I’ve had trouble with the fuel system and have replaced all filters, carb and fuel pump. A new gas tank is on order and I’d really like to replace the fuel lines but I’ve read it’s very difficult without removing the body. So, the question is what’s the best method to flush the current lines in place?
Force gasoline through them.
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
No drain snake exists that could physically scrub the inside of the line. Maybe fill the line with something more volatile, acetone maybe. Let it sit a while. Blow out with compresses air. Then cap the line and pressure test it. Not high pressure. 20 or so psi. But there isn't the volume inside for mass quantities of gluck to settle in like a fuel tank, so any nassness inside should blow out and leave lines decent.
Team Owner
Joined: May 2001
Posts: 87,357
Likes: 1,592
From: Western NY
Remove the rubber portion of the lines, flow acetone through the lines, followed by compressed air. Use acetone, because it completely evaporates, and leaves no trace behind, that could contaminate the fuel supply.
(same reason for cleaning wheel bearings with acetone....no residual left behind, to break down the wheel bearing grease)
(same reason for cleaning wheel bearings with acetone....no residual left behind, to break down the wheel bearing grease)
Racer
Joined: Oct 2017
Posts: 255
Likes: 24
From: Leander Texas
