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| | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | Hello all,
My 46 1.5 is building up pressure causing a leakage near the outlet valve on the bottom of the tank. High pressure is on the cap. Is the cap suppose to be vented? I have a $10 job from Carters on it now. How do the old tanks release pressure when fuel expands?
| | | | | Joined: Apr 2005 Posts: 1,107 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,107 | the caps are vented. the vent in the cap keeps it from building any pressure. the vent in the cap keeps the tank from going into a vacuum from the fuel pump sucking on it. even with the cap off you could still have it leaking where you say it is. head pressure in the tank is causing it to leak at one of the fittings. what i like to use on my fitting that i use thread sealant on is this. http://www.ferguson.com/FergusonSearch/RecordDetails.action?R=PROD_136577&search=trueor you can use something of the same sort. | | | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | Thanks for the tip. I did search the issue before posting, however I didn't feel it was resolved in other posts regarding if the caps are vented or not. | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Unless the tank has a stand alone vent you need the vented cap. So far as I know it has no vent.
I used a vented cap on my 52, same reason. | | |
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