97 7.3 fuel leak and pump question

[melmount]

Is the fuel supply on a 97 obs the same as a superduty 99?
Wheres the fuel pump on a 97? Is this one of the ones that has the pump in the valley somewhere?
A co worker of my wife, has fuel leaking. I am assuming drain valve or that area but not sure off hand of the differences from a 99?

[melmount]

when is a mechanical pump used? Or do these trucks use both?
Advance auto web site listed both for the 97? wondering why?

[ridiculously_necessary]

im not 100% sure, but if its an early 99 it should be electric. and he likely has fuel leaking somewhere around the bowl. i know the SD's have o-ring problems somewhere on the bowl, like the water drain or something. but i dont think its the same as the 97. its is a late 99 then im positive its electric, and his leak, while it can be anywhere, its most likely around the bowl.

[melmount]

The one i am going to look at is a 97,
I have both early 99 and an 01. They are the same. I was wanting info on the 97's
wheres the fuel pump?
are drain valve o rings the same?

[Adam-Arc]

97 fuel pumps is buried in the valley between the turbo and bowl.

Clean the valley and start the engine. The banjo bolt in the back of the pump is a good place to start. The o rings on the 97 should be the same as the SD.

Is the fuel leaking down the back of the block?

[melmount]

going to look now. Its not here.
if its coming from the pump, do you replace it? are there seals to fix on the pump itself?

[Adam-Arc]

Yes replace the pump.No seals on the pump just two gaskets on the banjo bolt.

There are soft lines under the the bowl that connect to the pump.If the bottom one is leaking a complete bowl removal is necessary. IMHO remove the bowl, replace all o rings, replace soft lines if you find it's not the pump.

If the soft lines are blue they are from the factory.

[melmount]

thx
I could not tell where it was. I looked at in in a parking lot where he works. Supposedly 2 years ago a new pump was installed at the dealer. The soft lines looked green. They were craked. The valley was all wet.

[ridiculously_necessary]

Originally Posted by melmount

thx
I could not tell where it was. I looked at in in a parking lot where he works. Supposedly 2 years ago a new pump was installed at the dealer. The soft lines looked green. They were craked. The valley was all wet.

i would do the bowl first. the OBS mechanical pumps often leak when they go out. and the have a reputation for not lasting long.

[melmount]

i ordered an o ring bowl kit, new hi temp soft lines and the 2 banjo bolt seals.
Hopefully that fixes it.