fuel bowl orings and lines

05wh250 · Apr 12, 2015

Alright guys I looked and couldn't find much about it. My grandpas 96 has a fuel leak in the valley somewhere, I figure I might as well replace what I can while I'm in there.

I saw the master boring kit on riffraff's site but what else should I replace? I saw rubber hoses, but aren't sure which ones or how many I need to get.

4duggan · Apr 12, 2015

You check diesel orings dot com ?

Pstrke96 · Apr 12, 2015

The fuel in and return lines are notorious for leaking I believe 3/8 about 5" long make sure to use some HD stainless worm drive clamps

Magnum PD · Apr 12, 2015

Some are 3/8" and some are 1/4". I believe.

05wh250 · Apr 12, 2015

I haven't checked anywhere but riffraff, but I'll look there too.

Do y'all use regular rated fuel hose?

I figured while I was there I would rebuild/ replace what I could. Most of the fuel seemed to be at the back of the valley, around what I would assume is the banjo bolt where the feed lines for the heads connect and split off. Would those be orings or crush washers?

zilla68 · Apr 12, 2015

the feed lines at the split off are crush washers if your talking about that huge bolt kind of under the pedestal for the turbo.

I wouldn't use regular hose, bob at dieselorings told me to use diesel rated only.
he has everything you will need in one place, great guy with awesome service.

m j · Apr 12, 2015

the vibralok rubbers dissolve

05wh250 · Apr 13, 2015

Alright, thanks guys. Also, could someone tell me how many of each hose I will need? And I saw the return lines, looked like some kind of hydraulic line, would I need to replace those too? Or do they give problems?

zilla68 · Apr 13, 2015

call bob and tell him what you need, he can get you all the right length of everything

05wh250 · Apr 13, 2015

zilla68 said:
call bob and tell him what you need, he can get you all the right length of everything

Thanks. I figured out what all I needed. They had pictures! Lol

05wh250 · Apr 26, 2015

Alright guys, we replaced all the fuel hoses and rebuilt the fuel bowl. Stopped one leak, I didn't replace the crush washers on the back of the fuel pump. Unfortunately that's where the leak is now.

My new question is, would it be the crush washers or a leak from the fuel pump? I've ran my hands around all the lines and can't find anything, and don't see anywhere its ran down from the heads. Just trying to figure out if I need the fuel pump or not.

And thanks for everybody's help so far!

gnxtc2 · Apr 27, 2015

You do have a crush washer under the banjo bolt head and another crush washer between the fuel pump/fuel line "Y"?

Billy T.
[email protected]

Redpower · Apr 27, 2015

Isn't there a weep hole on the bottom fuel pump that will leak when the pump is starting to go bad?

Bugman · Apr 27, 2015

The weep hole may start to leak even if the pump isn't starting to go bad. Just the nature of the beast.

jmsmith76 · Apr 28, 2015

Weep hole is on the front, passenger side of the fuel pump (correct me if I'm wrong, it's been awhile). Stick your inspection mirror down there and look for fuel dripping.

05wh250 · Apr 28, 2015

Yes the crush washers should be in there, I didn't take that apart.

From the picture I looked at it has 2 weep holes, I was thinking they were toward the back.

Anyway the under side of the pump was wet and nothing else that I could find. I have the pump on its way, so wish me luck I don't lose the tappet when I pull it.

gnxtc2 · Apr 28, 2015

05wh250 said:
Anyway the under side of the pump was wet and nothing else that I could find. I have the pump on its way, so wish me luck I don't lose the tappet when I pull it.

Do NOT lift the pump out just yet......Once you have all the hoses disconnected, remove the bolts holding the fuel pump. Turn the crank bolt which will make the fuel pump pop up. With the pump in the up position, the cam eccentric will prevent the tapped from falling into the engine.

Billy T.
[email protected]

jmsmith76 · Apr 29, 2015

gnxtc2 said:
Do NOT lift the pump out just yet......Once you have all the hoses disconnected, remove the bolts holding the fuel pump. Turn the crank bolt which will make the fuel pump pop up. With the pump in the up position, the cam eccentric will prevent the tapped from falling into the engine.

Billy T.
[email protected]

Yep. I usually turn the crank over a couple times to figure out where the highest point is.