Rusty Filler Neck

[roosterdiesel]

When gravity feeding from my bed tank I opened the fill cap to see if it was close to topped off. I found rust in the filler neck. How the heck could it rust in there? I haven't pumped anything through it since the bed tank was filled, just opened the valve when it got to around half tank. Only done that twice before today. We have had some rain recently and I've washed the truck a couple times. Is it possible for water to get in there if I have a bad cap even with the door close.

BTW I did hear pressure release when I opened it.

 

[95_stroker]

Simple condensation would be my guess Antonio.

 

[powerboatr]

Simple condensation would be my guess Antonio.

give that man a dollar

water vapor has to go somewhere, put a light coat of petrolatum around the neck rust and you should be fine,
your bio is carrying more water vapor than the #2 fuel, so as everything cools and warms, the condensation settles up there and causes the red oxide to develope.

 

[roosterdiesel]

I didn't think about that. I had just gotten done doing yardwork and was pretty beat. I guess I worry too much.


WD40 oughta do the trick right?

 

[powerboatr]

wd40
only in a pinch, it will wash off very quick if fuel gets on it.
use a good CRC spray like boe-shield or acf-50,
or take a dab of good old grease and wipe it around the neck with a rag, to leave a nice thin coat, not to much jsut a dab will do, or use some #2 fuel it leaves a nice residue and is completely compatible with your current fuel...

 

[roosterdiesel]

Guess I'll use some grease, got cases of that. NO #2 around here.