Fuel filter leaking after install

[mbruen]

I installed a new fuel filter in my new 1980 911 sc. The bottom nut is leaking gas. I am guessing that the compression fitting (line to filter) is not aligned right, and am going to try again.

Any tricks or tips about how to get this in right? Also, the fittings on the old filter did not work on the new one I had ( different size threading on fllter. I found two fittings ( from PO fuel filer spare) that seem to work fit with the filter and compression nut, but could be a culprit too.

Thanks for your suggestions.

[Franks89-911]

FWIW, This video was helpful to me in replacing the FF and the 2 types of wrenches needed to get the nuts on right and tight. Different MY I know but it might have info to help. https://youtu.be/sf4-NAvB_lc

[mbruen]

Thanks, already saw that video. Very clear and concise.

I am trying different fittings now. The new filter I bought did not fit the old fittings, and I found another new filter where the fittings match.

[DRACO A5OG]

Just be careful to use the proper fuel pipe/brake line wrench and insure it is not too loose or it will round out that fuel line brass fitting. It takes a specific torque to insure a leak free connection.

Many of us have rounded out that fuel line nut.

[75 911s]

Also because it's a hard line, I found that you need to loosen BOTH ends when changing out the filter (ie also the end on the accumulator).

1. Loosen both nuts
2. Align the hard line so that the compression area is lined up on both sides.
3. Hand tighten the nuts, then gently tighten using the fuel line wrench.
4. Test the system, then final tighten if any leaks.

Cover the area around with rags and paper towels for the test. Dispose of rags properly obviously.

[DRACO A5OG]

Needless to say, but wear gloves and goggles

[zippy_gg]

Originally Posted by DRACO A5OG

Needless to say, but wear gloves and goggles

And put out your cigarette!

[mbruen]

Thanks for the responses. Got the leak to stop, but may do what 75 911s said since I could not mount the bracket due to misalignment of the hard line.