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Running gas through a tank after 10+ years

Started by EccentricMagpies, April 13, 2020, 05:01:01 PM

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EccentricMagpies

Fuel hasn't been in this car for I don't know how long.  I'm getting close to wanting to start the car but I don't want to instantly clog my filter either.  (and maybe that won't happen if it was clean fuel that dried up years ago)
I'm curious if it's a good idea to remove the fuel line from the inline filter to let some fuel run through the gas line? 
At least to just check what might be there and to flush it a little.

thanks
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

XH29N0G

I think you are asking for trouble, BUT I may be doing something similar with 1.5 y.o gas to see what it does.  Not fully ready to try but I have in the past.
Who in their right mind would say

"The science should not stand in the way of this."? 

Science is just observation and hypothesis.  Policy stands in the way.........

Or maybe it protects us. 

I suppose it depends on the specific case.....

EccentricMagpies

Quote from: XH29N0G on April 13, 2020, 05:17:18 PM
I think you are asking for trouble, BUT I may be doing something similar with 1.5 y.o gas to see what it does.  Not fully ready to try but I have in the past.

Not sure if this is the same is it?  I plan to actually put fresh gas in, not run through some 10 year old gas.  It's dry in the tank but I'm wondering if there is any crap (dried up sediment) that might work loose.  I have no idea if the car sat with an empty tank or full tank the day it stopped.

If I had 1.5 yo gas and knew what it was when it was put in, I'd simply add fresh gas to it.  1.5 yo doesn't seem that bad.
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

4406bbl

I would not do it...I have seen valves varnish and stick from old fuel too many times and damage an engine. At the least pump all old out, add a few gallons, shake car, pump that out, add new.

EccentricMagpies

Quote from: 4406bbl on April 13, 2020, 05:36:23 PM
I would not do it...I have seen valves varnish and stick from old fuel too many times and damage an engine. At the least pump all old out, add a few gallons, shake car, pump that out, add new.

Okay.  I take back my "I'd run 1.5 year old gas through" comment.

My tank is currently dry and has been for years for all I know.
So, I'm assuming you are suggesting run a few gallons through into some bucket and then hook everything back up.

updated my title too.
thanks,
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

XH29N0G

I'll leave you to sort this out and watch and decide what I do on the basis of what I see.   :popcrn:
Who in their right mind would say

"The science should not stand in the way of this."? 

Science is just observation and hypothesis.  Policy stands in the way.........

Or maybe it protects us. 

I suppose it depends on the specific case.....

EccentricMagpies

Quote from: XH29N0G on April 13, 2020, 06:36:47 PM
I'll leave you to sort this out and watch and decide what I do on the basis of what I see.   :popcrn:

I'll flush it.

:2thumbs:
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

EccentricMagpies

okay.. poured about 2 gallons in the tank.

cranking over the motor I am not seeing fuel at the pump.   Maybe let it crank 30 seconds 3x?
Does it take a while to fill the lines?  Or is it possible something else is not working correctly?

suppose it could be the sending unit or plugged line.. i'll have to pull the line at the tank to see.
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

EccentricMagpies

I'm going to assume its the sending unit.  it was completely dry on the back end of that line and I am not able to blow into or suck gas from the line.
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

b5blue

Harbor Freight sells a suction gun as big as a grease gun get one and pull fuel up to fuel pump intake. It may even siphon from there once full.  :2thumbs:
https://www.harborfreight.com/oil-suction-gun-95468.html

EccentricMagpies

Quote from: b5blue on April 14, 2020, 01:19:57 AM
Harbor Freight sells a suction gun as big as a grease gun get one and pull fuel up to fuel pump intake. It may even siphon from there once full.  :2thumbs:
https://www.harborfreight.com/oil-suction-gun-95468.html

That seems like an option once I see about this piece.
When I woke i thought to simply slide a wire into the line at the location of the sender and maybe i could free it up.
Well, turns out the wire went in about 1/2" before hitting a block already.
So, maybe all I need is a new fuel hose.  But, this clamp in the picture.  Is this crimped on?  Or is there a trick on removing it?

thanks,
john
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

b5blue


EccentricMagpies

I replaced the hose but there is more to it than just in the hose.  Trying to push a wire into the sender itself hangs up and I cannot get forced air in that thing.

Looking at the main line to the filter i thought I'd see if that end had anything.  Sure enough, maybe went in an inch and i can feel the wire going through sludge-like crap.  Wire had a little on after pulling that back out.

So, two things.  Drop the tank and install new fuel line.
I installed a new fuel line so that end is done.  

From what I've been reading on here, the new senders are not worth buying and to rebuild the old one is advised.   So that will be what I plan once I pull it.  
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

b5blue

Ya know about the pickup sock on the end of the tube right?

EccentricMagpies

Quote from: b5blue on April 14, 2020, 07:25:53 PM
Ya know about the pickup sock on the end of the tube right?

Not until i pulled this one out I guess. 
I suppose i can see this thing would prevent any quick swap of fuel in/out.

Doesn't matter though.   Pulled the tank.  The old gas inside looked like molasses, holes on the top of the tank and the sending unit didn't really seem to have any free movement at all.   
I'll order new.
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

375instroke

I've driven a few cars that have sat for up to 10 years by just putting gas in and going without any real problems.  The first fuel filter gets clogged in a couple months, but that's it.

b5blue

Check the fuel lines for gummy crud also.  :2thumbs:

EccentricMagpies

Quote from: b5blue on April 15, 2020, 09:36:47 AM
Check the fuel lines for gummy crud also.  :2thumbs:

I replaced the fuel line yesterday after I tried sticking the wire down it.  Mentioned above
:2thumbs:

including a visual of what was there:
XH29N0G
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd


XH29N0G

Who in their right mind would say

"The science should not stand in the way of this."? 

Science is just observation and hypothesis.  Policy stands in the way.........

Or maybe it protects us. 

I suppose it depends on the specific case.....

EccentricMagpies

And that was thinned out with 2 gallons of fresh gas
:eek2:

That stuff just "sticks" to you too
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

70 sublime

Bet you won't leave gas in it that long like that again
next project 70 Charger FJ5 green

EccentricMagpies

Quote from: 70 sublime on April 15, 2020, 08:51:47 PM
Bet you won't leave gas in it that long like that again

Well.  I bought this car about 5 years ago.  Slowly took it apart and putting it back together. I have no idea how long it sat in the hot sun of Texas either. 
I really didn't think this was going to be an issue I guess.  Just figured the tank was empty.

Motor was stuck too. 
Anyhow I'm glad none of this ran through the rebuilt motor.
'74 Rallye 4spd (WH23L4) (1 of 94)
'74 Rallye Auto (WH23L4) (quad black)
'69 Swinger 340 - 4spd
'70 Duster 340 - 4spd

RSI700VIPER

What is that a picture of?  Looks like a trim ring lying in snow  :eek2:
69 V2 Daytona 440 4-Speed 3.54 Dana
70 FJ5 Superbird 440+6 4-Speed 3.54 Dana
69 Talladega Torino 428 CJ
69 Mercury Cyclone Spoiler II Gurney Special
70 T6 Challenger T/A 4-speed
70 V2 Challenger R/T 440 Six Pack 4-speed
71 FC7 Challenger Vert Flemington Speedway Pace Car
71 V2 Challenger RT Formal Roof w/ V2 Stripe & Houndstooth

jlatessa

Looks like a container of REALLY bad fuel...LOL

Joe