'74 Fuel Leakage
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Tuned
Joined: Apr 2007
Posts: 294
Likes: 30
From: VA
'74 Fuel Leakage
My '74 F100 has a fuel leak.It is leaking from the vent tube under the filler pipe.It has a clamp on the rubber hose and looks like black tape wraped around the vent hose onto the filler pipe.I took it loose and checked for holes in the rubber tube but found none.I have the correct gas cap.Would the vent tube be clogged?Thanks for the input guy's.
Senior User
Joined: Mar 2006
Posts: 143
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My truck had this issue when I first got it. It turned out to be the vent tube hose. I replaced it and have had no further issue. My truck only leaked when it got over 2/3 full. Does yours leak constantly or just when full?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
My '74 F100 has a fuel leak. It is leaking from the vent tube under the filler pipe. It has a clamp on the rubber hose and looks like black tape wrapped around the vent hose onto the filler pipe. I took it loose and checked for holes in the rubber tube but found none. I have the correct gas cap. Would the vent tube be clogged? Thanks for the input guy's.
If you have a fuel leak coming from this location, and you have the evaporative emission system on your truck, the fuel vapor valve in the tank could be defective.
With evap emission, the gas cap is NON-vented.
