Compression Ignition Addict
Join Date: Sep 2012
Location: The 'Sip
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Not much fuel is going to spill out. Probably less than 16 ounces. It will not continue to empty out once the little bit in the lines and housing drain.
You have a few choices when you take the side cover off of the pump. You can either unbolt the housing from the frame rail or just loosen it so there's a little more clearance and you can really see what you're doing. The rear of the housing is in a bad spot for me. There's brake lines and a harness that you have to force out of the way to get the rear cover off and it usually has the filter attached to it. So, it's going to require a little bit of wiggling.
Put an oil catch pan under the pump when you start unbolting things on it. Fuel will come out almost immediately. Make sure you do not prime the pumps by putting the key in the ignition before doing this. You could aim the truck uphill if you want, but I do it on level ground.
To clean the housing, have some cotton swabs ready. If I remember correctly, a Ford tech said it was okay to use un-chlorinated brake parts cleaner. If you shoot it from the end where you pull the filter out from, it's easier to knock all the remaining debris out. Let the cleaner dry before you start bolting stuff back together (should only take a minute or two).
This should take about 1 hour total (including both filter swaps).
***REMEMBER TO PRIME THE PUMPS SEVERAL TIMES AFTER CHANGING YOUR FILTERS***
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