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Old 02-20-2013, 05:52 AM
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fuel leak at mechanical pump

I installed a chrome mechanical pump on my sbc 350. I used 3/8" brake line and ran it from the tank up to the pump. Then I used a braided stainless line and anm fittings to go to the carbs. I sprung a leak at the inlet side of the pump. So i backed it out and used some of the rtv in the white tube. the stuff is actually brown. Tightened it up and the the next day it leaked again. I am thinking that the fitting on the brake line going into the pump inlet is too short and may not be seating properly. Nothing else leaks any where.

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Old 02-20-2013, 06:00 AM
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Are you sure that has a seat in it for a brake line double flare? You may have to cut that line, put a pipe fitting, and a short 3/8 hose. Use Teflon tape or paste.
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Old 02-20-2013, 06:16 AM
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I really am not sure about the seat. I did not want to use rubber, but I guess if that is my only choice. Will teflon tape work with gas? If there is no seat inside the pump then I am assuming that no matter what i do it will still leak, am I correct?
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Old 02-20-2013, 06:25 AM
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Teflon will work with gas. If there is no seat in the pump fitting it will be a pipe fitting.
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