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I have a few questions about my ‘90 fox

  • Thread starter Thread starter FoxbodyD90
  • Start date Start date Jun 27, 2021
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    1990 mustang fox body 5.0 help please

FoxbodyD90

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Jun 19, 2021
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#1
  • Jun 27, 2021
  • #1
I have a 1990 foxbody that I got handed down to me and it’s been sitting for over 10 years and I need help. I’m going to drain all the fluids out of the car first and my first question is to drain the gas can I just funnel it out or do I have to drop the tank and drain it out that way.
 
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General karthief

wonder how much it would cost to ship you a pair
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#2
  • Jun 27, 2021
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'funnel it out' don't know what that means. Really, all you gotta do is pull the schrader valve out, attach an hose to the nipple and jump the test port. As long as you have a good battery and the fuel pump works, that's the easiest way I know.
I'm not the brightest bulb in the room and I'm guessing someone knows another way.
After 10 years there may not be any fuel left in there.
 

7991LXnSHO

wanna catch the space herp
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#3
  • Jun 27, 2021
  • #3
Siphon?
If you do not want to run the old gas through the stock pump and filter, siphoning is the other way. How strong of varnish does the fuel smell? If it’s really rotten and there is not a lot, I’d siphon it and drop the tank for an inspection and flush. I would not drop a tank more than 1/4 full by myself again. Gas is heavy by the gallon.
If the fuel is just stale, using the Schrader valve and using the in tank fuel pump would be a test of the pump.

(Edited for auto incorrect)
 
Last edited: Jun 28, 2021
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General karthief

wonder how much it would cost to ship you a pair
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You could also put a hose on the filter nipple under the car by the fuel tank, if the pump pushes it out good! If not plan 'b'.
 

FoxbodyD90

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#5
  • Jun 28, 2021
  • #5
7991LXnSHO said:
Siphon?
If you do not want to run the old gas through the stock pump and filter, siphoning is the other way. How strong of varnish does the fuel smell? If it’s really rotten and there is not a lot, I’d siphon it and drop the tank for an inspection and flush. I would not drop a tank more than 1/4 full by myself again. Gas is heavy by the gallon.
If the fuel is just stale, using the Schrader valve and using the in tank fuel pump would be a test of the pump.

(Edited for auto incorrect)
Click to expand...
Yeah I have not smelt the gas yet but I have a uncle that has been working on his fox for awhile but just doesn’t know if there is something blocking it to where we could Siphon the gas out if so I’ll drop the tank or if I could just stick a hose down into the tank and pump it out
 

FoxbodyD90

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#6
  • Jun 28, 2021
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FoxbodyD90 said:
Yeah I have not smelt the gas yet but I have a uncle that has been working on his fox for awhile but just doesn’t know if there is something blocking it to where we could Siphon the gas out if so I’ll drop the tank or if I could just stick a hose down into the tank and pump it out
Click to expand...
It also doesn’t run and needs a new battery
 

FoxbodyD90

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#7
  • Jun 28, 2021
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General karthief said:
'funnel it out' don't know what that means. Really, all you gotta do is pull the schrader valve out, attach an hose to the nipple and jump the test port. As long as you have a good battery and the fuel pump works, that's the easiest way I know.
I'm not the brightest bulb in the room and I'm guessing someone knows another way.
After 10 years there may not be any fuel left in there.
Click to expand...
The car doesn’t run and needs a new battery so I don’t know if there’s a way I can check if it has any gas in it but my real question is if there is something blocking me from sticking a hose from where you pump gas into or if there’s is not and I can just put a hose down in it and pump and siphon it out
 

General karthief

wonder how much it would cost to ship you a pair
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#8
  • Jun 28, 2021
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Yes, at the bottom of the gas fill tube there is a piece of tin that is at an angle to prevent fuel slosh up the pipe and prevent a siphon hose from going into the tank.
 

FoxbodyD90

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Jun 29, 2021
#9
  • Jun 29, 2021
  • #9
General karthief said:
Yes, at the bottom of the gas fill tube there is a piece of tin that is at an angle to prevent fuel slosh up the pipe and prevent a siphon hose from going into the tank.
Click to expand...
So I will need to drop the gas tank at the back of the car to get all the gas out
 

Rdub6

So while I wait to figure out my rear end issues
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#10
  • Jun 29, 2021
  • #10
FoxbodyD90 said:
So I will need to drop the gas tank at the back of the car to get all the gas out
Click to expand...
Dropping the tank is not as bad as it sounds. Just make sure you have it supported, and you loosen the filler neck connections.
 
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Mstng93SSP

You have a nice rear end there Dave.
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#11
  • Jun 30, 2021
  • #11
I suggest you drop the tank and check it out. I speak from experience.
 
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2000xp8

SN Certified Technician
Aug 8, 2003
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#12
  • Jun 30, 2021
  • #12
Drop the tank. It sounds like a real pain, but it's actually not.
Handful of bolts. May want to pre purchase new J nuts and bolts from LMR first for the straps.
If it's full letting it down may be a little tricky, but it will go back up easy empty.
If you plan to modify the car i'd change the pump while you are in there. NA a 155lph pump will do and shouldn't cost more than $75. New seals wouldn't hurt either, the fill tube seal is almost certainly shot.
 

evintho

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#13
  • Jul 2, 2021
  • #13
Throw together a fuel tank cradle. Dirt cheap, easy to build and allows one person to remove or install a Mustang tank even if it's full of fuel!



















 
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ArtMan

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Jul 3, 2021
#14
  • Jul 3, 2021
  • #14
evintho said:
Throw together a fuel tank cradle. Dirt cheap, easy to build and allows one person to remove or install a Mustang tank even if it's full of fuel!



















Click to expand...
Evintho,
This is an amazing design. I've been thinking of making something like this for years, but wasn't sure how to stop the tank from wobbling on the jack. I though of collapsible legs. This is much better.
Art
 
Last edited: Jul 3, 2021

Bree

Active Member
Jan 12, 2021
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Zanesville Ohio
Jul 3, 2021
#15
  • Jul 3, 2021
  • #15
Ya know, my first thought was, you're probably going to replace the fuel filter , so just dis connect the fuel line there, hit the key and let the pump do the rest. The few drops of junk gas left will be more than diluted enough when you fill the tank...
Then as I scrolled down the page, I saw the pic of the sludged up tank. and then I thought, Hmmm,,, 10 years ya say.... Maybe it is best to drop it and just check things out. Better safe than sorry! Save the above approach for something 5 years or less.
Ya know, here's the thing, 10 years is a very long time to park a car. Maybe things are ok, but then again, there is a chance that they're not. It's like the commercial with Tracy Morgan, "I'm pretty sure vs knowing for sure". With my luck, if took the gamble I'd loose.
 
Last edited: Jul 3, 2021
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