Gas smell - found problem, what's the solution? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

clemsonteg · 02-10-2013, 07:03 PM

So I went to my truck today to get something out and it smelled like someone poured gas all inside the truck. I moved the seat as far forward as I could and I pulled the carpet up and found that the center of the tank is wet all under the sending unit. Here is my question, is the top cap connected directly to the sending unit? The reason I ask is because it looks like the hard line on top of the tank may be cracked around its base. Does that require replacement of the entire sending unit and if so can it be done with the seat in the truck? Where would be the best place to pick up the part I need?
Posted via Mobile Device

68gmsee · 02-10-2013, 07:39 PM

Line coming out is part of the sending unit. You'll have to remove the sending unit and either replace it if it looks like it's old defective or maybe find some way to braze the line.

68gmsee · 02-10-2013, 07:42 PM

Forgot to add: You can remove the sending unit with the seat pushed as far farward as you can get it. You will have to do a search on this site for more info but be sure and use a brass drift to tap around it to remove it. Be extremely careful of sparks with metallic parts and disconnect the battery just to be safe.

68Cummins · 02-10-2013, 08:40 PM

It is very simple to remove the sending unit. As gmsee said just tap the retainer ring. Remove the unit to inspect whats exactly leaking.
Posted via Mobile Device

clemsonteg · 02-10-2013, 09:34 PM

Thanks for the info. Sounds pretty simple. Any idea where the best place is to get the parts? I found it in LMCs catalog but I know they don't always have the best parts.
Posted via Mobile Device

Billett · 02-10-2013, 09:50 PM

what seat do you have? The bench really isn't that hard to pull out anyway and it would give you a lot more room to work. Not necessary, but if you have a newly reupholstered seat or some such it would be worth it IMO in case of leaks.

ole dollor · 02-10-2013, 10:41 PM

one more thing , make sure your tank is low enough on gas to pull the sender out. about a half tank or lower...or you will have a big leak....

clemsonteg · 02-10-2013, 10:46 PM

Quote:

Originally Posted by ole dollor

one more thing , make sure your tank is low enough on gas to pull the sender out. about a half tank or lower...or you will have a big leak....

Thanks for the heads up. I actually figured that the smell is so strong because I just put gas in it the last time I drove it. I'll have to put some miles on her ( boo hoo

) before I swap it out. That will give me time to order the parts I need.
Posted via Mobile Device

Longhorn 70 · 02-10-2013, 11:17 PM

Quote:

Originally Posted by clemsonteg

Thanks for the heads up. I actually figured that the smell is so strong because I just put gas in it the last time I drove it. I'll have to put some miles on her ( boo hoo ) before I swap it out. That will give me time to order the parts I need.
Posted via Mobile Device

OR you could just syphon some off in to my tank.

clemsonteg · 02-10-2013, 11:21 PM

Quote:

Originally Posted by Longhorn 70

OR you could just syphon some off in to my tank.

That's a long haul for a few gallons of gas!
Posted via Mobile Device

02-10-2013, 07:03 PM	#1
clemsonteg Registered User Join Date: Jul 2012 Location: Anderson,SC Posts: 953	Gas smell - found problem, what's the solution? So I went to my truck today to get something out and it smelled like someone poured gas all inside the truck. I moved the seat as far forward as I could and I pulled the carpet up and found that the center of the tank is wet all under the sending unit. Here is my question, is the top cap connected directly to the sending unit? The reason I ask is because it looks like the hard line on top of the tank may be cracked around its base. Does that require replacement of the entire sending unit and if so can it be done with the seat in the truck? Where would be the best place to pick up the part I need? Posted via Mobile Device

02-10-2013, 07:39 PM	#2
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Gas smell - found problem, what's the solution? Line coming out is part of the sending unit. You'll have to remove the sending unit and either replace it if it looks like it's old defective or maybe find some way to braze the line. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...

02-10-2013, 07:42 PM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Gas smell - found problem, what's the solution? Forgot to add: You can remove the sending unit with the seat pushed as far farward as you can get it. You will have to do a search on this site for more info but be sure and use a brass drift to tap around it to remove it. Be extremely careful of sparks with metallic parts and disconnect the battery just to be safe. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...

02-10-2013, 08:40 PM	#4
68Cummins Registered User Join Date: Feb 2013 Location: New Whiteland Posts: 62	Re: Gas smell - found problem, what's the solution? It is very simple to remove the sending unit. As gmsee said just tap the retainer ring. Remove the unit to inspect whats exactly leaking. Posted via Mobile Device

02-10-2013, 09:34 PM	#5
clemsonteg Registered User Join Date: Jul 2012 Location: Anderson,SC Posts: 953	Re: Gas smell - found problem, what's the solution? Thanks for the info. Sounds pretty simple. Any idea where the best place is to get the parts? I found it in LMCs catalog but I know they don't always have the best parts. Posted via Mobile Device

02-10-2013, 09:50 PM	#6
Billett Registered User Join Date: Jun 2012 Location: Pittsgrove, NJ Posts: 1,502	Re: Gas smell - found problem, what's the solution? what seat do you have? The bench really isn't that hard to pull out anyway and it would give you a lot more room to work. Not necessary, but if you have a newly reupholstered seat or some such it would be worth it IMO in case of leaks. __________________ Will 1968 C10 - Project Texa Go 6.0/4L80e 2003 Mitsubishi Lancer Evolution 2002 Ford Excursion 7.3L 2024 Toyota Sienna

02-10-2013, 10:41 PM	#7
ole dollor Registered User Join Date: May 2012 Location: Anton, Texas Posts: 2,364	Re: Gas smell - found problem, what's the solution? one more thing , make sure your tank is low enough on gas to pull the sender out. about a half tank or lower...or you will have a big leak....

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.