I am about to change my Racor fuel filter for the first time, which is mounted on the frame rail. Will fuel siphon out from the tank when I unscrew the filter?


I of course had to break the siphon when first cutting the fuel line to mount the filter, but wanted to make sure I was prepared this time before getting a diesel shower.


Thanks!

You may get some siphon effect depending on how full your tank is. When
I first cut my line I waited until the tank was down to almost empty
and ended up with just a few drops comming out of the lines. Changing
the filter should yield about the same I would think.

When I installed my Racor pre-filter, I was at 3/4 tank (patience is not one of my strong suits). I lost about 2 gallons of diesel during the install even with the line plugged most of the time. When changing the filter for the first time, I was sure it was going to be messy. I went until it was almost on empty, and used a floor jack to lift the front of the truck hoping gravity would keep everything in the tank. Worked perfect, and the filter change went quick and easy.

They make pliers which I have being a diesel mechanic that safely climp off the hoses and stop the fuel flow regardless how full your tank is.They are made to prevent destroying the hose.Pretty nifty.I have the same racor setup.After climping the hoses off lost of fuel or mess is miminal..

I don't know if this is an accepted method, but I usually take a couple of wooden dowels and clamp off the line with a pair of vice grips. Play with it a little bit and try not to clamp it real hard. Like I said, works for me, but.....

I put a ball valve in line between the fuel tank and filter just for the reason mentioned in your question. I've not changed filters yet, but hope that the valve will keep fuel loss to a minimum.

I changed my Racor with my gauge showing 1/4 and got just a slight amount of fuel. I'm not sure this is recommended, but the process I followed was to drain the old filter, remove the bottom assembly and then install it on the new filter. I then filled the new filter with diesel, spun off the old filter body, had wifey hand me the new assembly, and put it on quickly. Got a very small amount of fuel and didn't have to prime at all, worked great.

Changing the filter with a quarter tank or less should give a minimal shower.

As some of you might recall..... my brother in law had
his D/A stolen in Mexico. He had a Racor Pre-filter set up
on that truck.

He is cleaning out his garage and found a bunch of
Racor R60S 2 micron filters which he can't use.

You can e-mail him at nickplastina@hotmail.com

I have used the hose pliers mentioned earlier in this thread and they have worked well. I have changed my Racor filter twice now and lost no fuel either time. They are just some plastic pliers with a blunt jaw (so as not to cut the hose) and lock in place. Work great, cost less than ten bucks I think.

Greg