Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford Inline Six, 200, 250, 4.9L / 300
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 12-11-2002, 11:00 AM
bcsbadboys bcsbadboys is offline
Junior User
 
Join Date: Apr 2002
Location: Minneapolis
Posts: 88
bcsbadboys is starting off with a positive reputation.
gas tank leaking

[updated:LAST EDITED ON 11-Dec-02 AT 12:02 PM (EST)]Have a small leak somewhere on the rear tank of the dual tanks. It's on the engine side and I believe its on the top. Very, very small amounts of gas have dripped onto the spare tire, and eventually onto the garage floor. Two questions.

1. Can I fix this myself using some of that gas tank repair stuff that they have at local auto stores by removing the spare tire encasing and searching for the leak on the tank or is this reserved for a professional?

2. What problems would come from leaving it how it is? Is it imperative that it be fixed promptly to avoid any fire, or gasoline problems?

I need all of your expert suggestions on this one. Thanks Much.
__________________
1993 F-150 XL
4.9 L, 300, I-6, 5spd
220,000

Uses no oil, still runs excellent
Reply With Quote
  #2 (permalink)  
Old 12-11-2002, 12:35 PM
Vampiro Vampiro is offline
Postmaster
 
Join Date: Sep 2001
Location: Canada
Posts: 3,124
Vampiro is starting off with a positive reputation.
gas tank leaking

i had the same problem. drain the tank, then remove it. be careful not to break the sending unit or anyhting. disconnect all hoses. then heat up a rod or something that you can use to heat up, thus to melt soilder onto the tank. DO NOT USE A DIRECT FLAME LIKE A TORCH!!

afterwards use a undercoat to undercoat the gas tank to protect it from stone chips and road salt. this will prolong the life of the tank
Reply With Quote
  #3 (permalink)  
Old 12-11-2002, 10:26 PM
steve83's Avatar
steve83 steve83 is offline
Post Fiend
 
Join Date: Nov 2002
Location: Memphis, TN
Posts: 9,985
steve83 is starting off with a positive reputation.
gas tank leaking

Sealing it from the outside only ensures that ALL the rust will stay in your fuel system, unless it makes it into the engine. You need to pull the tank, empty it, & dry it with a vacuum cleaner blowing into it for a couple of hours and a 75W drop light under it keeping it warm.

Then use a light & an inspection mirror to assess the damage. If it's minor, use a pour-in gas tank liner or have it brazed. If it's bad, replace the tank.
__________________
Walk softly & carry a BIG 6!
Reply With Quote
  #4 (permalink)  
Old 12-12-2002, 12:14 PM
bcsbadboys bcsbadboys is offline
Junior User
 
Join Date: Apr 2002
Location: Minneapolis
Posts: 88
bcsbadboys is starting off with a positive reputation.
gas tank leaking

Good information. I'm not as confident working with fuel and gasoline components. Is dropping the tank and sealing the hole something that an "intermediate" skilled do-it-yourselfer can accomplish?

Dropping a gas tank should be easy in theory but are there things that i may damage or have trouble with?
__________________
1993 F-150 XL
4.9 L, 300, I-6, 5spd
220,000

Uses no oil, still runs excellent
Reply With Quote
  #5 (permalink)  
Old 12-12-2002, 12:28 PM
Vampiro Vampiro is offline
Postmaster
 
Join Date: Sep 2001
Location: Canada
Posts: 3,124
Vampiro is starting off with a positive reputation.
gas tank leaking

i did it when i was 4 or 5 years ago when i knew nothing. my dad guided me through the steps and helped me out, mind you i was like 13 or so. i did it, almost all on my own. needed him to hold the tank up for me so i can reinstall the brakctes as it kept slipping off the jack stands
Reply With Quote
  #6 (permalink)  
Old 12-14-2002, 01:00 PM
bcsbadboys bcsbadboys is offline
Junior User
 
Join Date: Apr 2002
Location: Minneapolis
Posts: 88
bcsbadboys is starting off with a positive reputation.
gas tank leaking

Success. I've isolated the problem and can fix it without dropping the tanks or disconnecting the hoses. Tell me if I'm missing anything here.

Probably a pin hole size leak under the bracket of my rear tank. I have the tank nearly empty. I have 2 thick wood posts to brace the tank securely while I remove the bracket. Once that's off, I'll use the gas tank sealant kit I bought to plug the leak, then clean, sand and apply the fiberglass resin material.

Does this sound easy enough? Do I open the gas cap while doing this and do I need to relieve the fuel system pressure? Thanks for the help.
__________________
1993 F-150 XL
4.9 L, 300, I-6, 5spd
220,000

Uses no oil, still runs excellent
Reply With Quote
  #7 (permalink)  
Old 12-14-2002, 03:32 PM
GammaDriver's Avatar
GammaDriver GammaDriver is offline
Posting Guru
 
Join Date: Dec 2001
Location: Southeast FLA
Posts: 2,014
GammaDriver is starting off with a positive reputation.
gas tank leaking

[updated:LAST EDITED ON 14-Dec-02 AT 04:35 PM (EST)]Well, there isn't any "pressure" in the tank save for the fuel that is in there pushing down on the bottom of the tank due to its weight.

I know you don't want to do this, and you don't want to hear this, but I also have a 1993, and I had a similar problem.
Deduction: 1993 (and possibly others') rear metal gas tanks were, and are, crap!

(and they are a time-based deteriorating component, not mileage based... ours went at similar times even though I had 84,500 miles on mine when I changed it out)

My pinhole was near the top - are you planning on covering the whole tank while you're under there?

Do yourself a favor. Do yourself a BIG favor. Change the tank out for a new one. I'm going to predict that you are probably facing seeing many more pinholes within the next year or so.

While doing your changeout, replace the fuel pump, the fuel pump's screen, and the outer, if not the outer and inner, fuel-filler hoses.

Sorry, but I just had to get that out. I don't feel I would be helping you by writing for your plan, or by ignoring what seems obvious (based my the additional knowledge I have of another 1993 pinhole - that isn't to say it should have been obvious to you).

I wish you the best in your endeavor. If you don't address it now, just plan on finding a place, getting the tools, and buying the parts, to do it fully sometime soon.

Best,
__________________
1999 F-150 XL, Extended Cab, Long bed, 4.6L, 4x4, M5OD (geez, the truck's description is just about as long as the truck itself! )
Reply With Quote
  #8 (permalink)  
Old 12-15-2002, 09:46 PM
wildjon300ci wildjon300ci is offline
Posting Guru
 
Join Date: Jun 2001
Location: Conyers
Posts: 1,208
wildjon300ci is starting off with a positive reputation.
gas tank leaking

__________________
1986 Bronco 4x4 EFI 302
Stock...for now
Wide-ratio C6 :evilgrin:
351 waiting to be stuffed in
Reply With Quote
  #9 (permalink)  
Old 12-16-2002, 10:23 AM
bcsbadboys bcsbadboys is offline
Junior User
 
Join Date: Apr 2002
Location: Minneapolis
Posts: 88
bcsbadboys is starting off with a positive reputation.
gas tank leaking

I will take that into consideration. I think in the long-term that is the correct thing to do. I'm going to patch it for the time being and look into options and purchase the new one once I find the best solution to my problem.
__________________
1993 F-150 XL
4.9 L, 300, I-6, 5spd
220,000

Uses no oil, still runs excellent
Reply With Quote
  #10 (permalink)  
Old 02-15-2003, 11:28 PM
Too Tall Tony Too Tall Tony is offline
New User
 
Join Date: Feb 2003
Location: Thompson Mb Canada
Posts: 8
Too Tall Tony is starting off with a positive reputation.
gas tank leaking

Howdy

I have a small leak in my rear tank as well. I just noticed it a couple of days ago. I plan on changing the tank. It must have been leaking for some time. The spare tire was shot from the gas leaking on to it.

So if you had your tire under there, you should have a close look at it.

Tony
Reply With Quote
  #11 (permalink)  
Old 02-15-2003, 11:33 PM
steve83's Avatar
steve83 steve83 is offline
Post Fiend
 
Join Date: Nov 2002
Location: Memphis, TN
Posts: 9,985
steve83 is starting off with a positive reputation.
gas tank leaking

If you're still looking for a replacement tank...
__________________
Walk softly & carry a BIG 6!
Reply With Quote
  #12 (permalink)  
Old 02-16-2003, 12:07 AM
shotgun shotgun is offline
Senior User
 
Join Date: Feb 2000
Location: South East Alabama
Posts: 388
shotgun is starting off with a positive reputation.
gas tank leaking

Either way you go fix or replacing the tank.
Most people prefer to:

1. Remove the six bed bolts. (spray a few days prior with PB Blaster) Also spray metal strap bolts on fuel tank.

2. Unhook the fuel filler tubes.

3. Unhook tailight wires.

4. Remove tailgate to make bed lighter.

5. Have buddy help lift off bed for easy access to both tanks.

The fuel tank is now much easier to remove and reenstall. Unhook the sender wires prior to dropping the tank, as they aren't long enough with the tank on the ground.

Chris
Reply With Quote
Old 02-16-2003, 12:07 AM
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Ford Inline Six, 200, 250, 4.9L / 300

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 03:08 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.5.2 ©2010, Crawlability, Inc.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup