Vintage Mustang Forums banner

Dry fuel filter

524 3
Anyone know why when my 66 sets for a while, the fuel in the fuel filter drains out, I guess it goes back into fuel tank? I have glass fuel filter and I can see it.



A bad day working on the stang is better than a good day at work!
1 - 4 of 4 Posts

Discussion Starter · #3 ·
My 69 does this too. I think the fuel boils in the line from the heat when the car sits and cools down.


65 GT Coupe, dismantled waiting for resto.
67 Restomod Coupe, in assy.
69 Mach 1, SWMBO say don't take it apart!
91 5.0 LX HB, driver.

3,614 Posts
asked this on forum year or so ago and got no answer. my opinion is the seals in the fuel ump in/out valves are degraded. sent this same question to mechanic at "AutoRestorer" and he agreed. i will evenually replace my '68 6-cyl and see if it goes away - will post results. by the way it takes mine about 2-days to go down. agree that it is nothing to worry about since my car starts up first try even after sitting for 2 weeks or so - i have seen bowl fill up in a few seconds of running starter.
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.