Wait 1 minute between coats. To choose the appropriate thread sealant look for its chemical resistance to fuel diesel or gasoline or oil running through the line.
Mro Operation Finding And Fixing Fuel System Leaks
Fuel line leak sealant. Youll have leak free fittings without the hassle of tape. Im sure there is other brands around but as long as you get a sealant like this which contains ptfe. Allow 30 to 45 minutes before returning the engine to service. Backyard mechanics will tell you theyve used regular old gas resistant teflon tape yellow stuff with success. Use 3 to 5 coats for best results. Use extension tube for hard to reach areas.
Use a screwdriver or socket wrench and appropriate socket to release fuel line fittings that you find while working on a leaking line. Filling the tanks creates some pressure. Clean both pieces and wipe with denatured alcohol before applying it and you should be fine. Cover a large area around the site of the leak to make sure that the leak is completely sealed. Theory is it allows the tapered threads to mesh better as the fitting can be tightened more. A trick to any thread sealant and i no longer use ptfe tape on fuel for reasons mentioned is to leave the first thread of npt fittings dry bare metal.
Open the line up on one end and drain any remaining fuel out before disconnecting the other end. Spray permatex spray sealant liberally with a slow sweeping motion. Apply an ample amount of sealer over a large area. This is not recommended because it risks breaking free. Gasoila soft set pipe thread sealant with ptfe paste non toxic 100 to 600 degree f 2 oz tube. Lightly wipe sprayed area with clean cloth.
Using too little sealant can cause the tank to leak again very quickly and defeat the purpose of your repair. I would use the teflon thread sealant and allow it to cure before putting pressure on it. Step 3 use a flat tip screwdriver to lever off a stubborn fuel line if it is stuck. Ptfe is a lubricant. 2 ounce permatex permashield fuel resistant gasket dressing and sealant is a polyester urethane sealant with strong resistance to gasoline and all other automotive fluids making it excellent for a variety of applications including oil pans axle assemblies and fuel injectors. This usually keeps the crap out of the pipes.
Give the sealer ample time to dry. I use this on most fuel and hydraulic fittings that require sealant and have not had a sealant failure in years.
Gallery of Fuel Line Leak Sealant
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