Recent Topics
FBI RAIDS CDC HEAD QUARTERS in Atlanta. Any news?
by Vern_in_IL
01/24/17 05:11 PM
Wiper Chatter
by coopns
01/24/17 04:30 PM
For Canadians - PC launches new website
by Solarent
01/24/17 03:58 PM
How long would a battery still be good if charged?
by y_p_w
01/24/17 03:36 PM
How to unravel CCleaner's deletion process???
by Triple_Se7en
01/24/17 02:00 PM
Mail order eyeglasses?
by JTK
01/24/17 01:55 PM
Pep Boys Computer has bad oil data
by veryHeavy
01/24/17 01:31 PM
Smallest Oil Sump in a car?
by veryHeavy
01/24/17 01:24 PM
2018 Toyota Camry / V6 instead of Turbo
by wemay
01/24/17 01:22 PM
Microgreen and 2012 Honda Pilot Experience
by Eric0919
01/24/17 01:10 PM
Deka batteries = good?
by nthach
01/24/17 12:36 PM
89 chevy truck no high beams
by John_Conrad
01/24/17 11:18 AM
Newest Members
Greasylittlepig, penataquit, dreamerx, Bryan232, Scargo
60275 Registered Users
Who's Online
97 registered (1WildPig, 901Memphis, 87sammy, Al, 8 invisible), 1897 Guests and 16 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60275 Members
66 Forums
260061 Topics
4287121 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4292790 - 01/04/17 01:48 AM Recommend glue for sealing cracked fuel tank cover
zorobabel Offline


Registered: 01/27/11
Posts: 150
Loc: Anaheim, CA
My 97 Maxima has developed a gas leak which I traced to a hairline crack in the plastic fuel gauge sending unit, which acts as a cover for the fuel tank. The part seems rather expensive at $130+, so I want to try mending it.
Can you please recommend a glue that would work and hold up to gas and alcohol?
_________________________
1997 Maxima 151k VWB, L20195
2004 Corolla 175k QSUD, M1-209

Top
#4292793 - 01/04/17 02:05 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Ducked Offline


Registered: 10/25/12
Posts: 1861
Loc: Taiwan
Long time ago I used leftovers from a glass fibre body repair kit, which is a polyester resin. IIRC that wasn't even supposed to work then (though it did) and petrol formulations have allegedly got more aggressive in the interim.

Now I'd probably try epoxy. If you can wait, maybe whatever you try you could test its petrol resistance first to avoid contaminating the surfaces with something ineffective, in case you find something better later on.

Top
#4292795 - 01/04/17 02:37 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
rooflessVW Offline


Registered: 12/24/11
Posts: 1685
Loc: North Carolina
PS 870 B.

It's expensive though...
_________________________
"Zed's dead baby, Zed's dead."

Top
#4292824 - 01/04/17 05:31 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
umungus1122 Offline


Registered: 02/12/08
Posts: 828
Loc: PA
VersaChem, Permatex, and others make gas tank specific repair kits. Since your looking to fix a plastic part instead of the steel itself, I'd look into a plastic specific bonding epoxy that is solvent(or at least gas) resistant.
_________________________
'95 Chevy 1/2t 305 200k - QS DEFY 5w-20, CARQUEST Red(wix made) filter
'89 Jeep Comanche 4.0 278k - GC 0w-30, Bosch LongLife filter

Top
#4292827 - 01/04/17 05:39 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: umungus1122]
sdowney717 Offline


Registered: 10/01/05
Posts: 287
Loc: Newport News, VA
I repaired a cracked filler tube neck in a 1998 Ford contour, leak stopped. That was years ago and it never leaked again.
They call it PL S30 nowadays. Gas has changed since then. I would still use it today.
I used Black Loctite PL Polyurethane roof and flashing caulk. You can put on a layer about 1/8 to 1/4 in depth.

Top
#4292878 - 01/04/17 07:16 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
tc1446 Offline


Registered: 12/10/10
Posts: 765
Loc: Lexington, NC
JB Weld makes a variety of epoxies that should work.
_________________________
'13 Accord EX-L (60K) M1 & FU
'00 Ford Ranger {56K} M1 & FU
'14 Can Am SE6 (23K) Amsoil 10-40
'16 Polaris Slingshot M1 & ACDelco (Ecotec motor)

Top
#4292882 - 01/04/17 07:23 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: umungus1122]
Bgallagher Offline


Registered: 04/17/12
Posts: 2660
Loc: Boston, MA
Originally Posted By: umungus1122
VersaChem, Permatex, and others make gas tank specific repair kits. Since your looking to fix a plastic part instead of the steel itself, I'd look into a plastic specific bonding epoxy that is solvent(or at least gas) resistant.


+1
_________________________
2005 Chevy Equinox - 143k - ST and Mobil M1201
2014 Chevy Equinox - 20k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 15k- Delco Dexos 1 and PF457G

Top
#4292908 - 01/04/17 08:01 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Blkstanger Offline


Registered: 08/13/11
Posts: 1539
Loc: Lakeside, CA
3M 8802 gas tank sealer
_________________________
99 Jeep GC 4.7 160,000 PYB 10w30, Fram Ultra.

Top
#4292913 - 01/04/17 08:05 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: tc1446]
fxrider Offline


Registered: 06/09/09
Posts: 990
Loc: Wyoming
Originally Posted By: tc1446
JB Weld makes a variety of epoxies that should work.
been there done that. works great.

Top
#4292958 - 01/04/17 09:22 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Panzerman Offline


Registered: 12/16/06
Posts: 3367
Loc: Port Orange, Florida
Playing with small engines and chainsaws for a hobby I have often found problems with cracked leaking gas tanks. I tried alot of epoxies and sealers, all of which were short term solutions. Nothing worked for long. What I have found that works forever and quickly is a soldering iron or wood burner. Melt the plastic back together. I just repaired a plastic chainsaw tank with a large crack and hole. Works like a charm. Not dangerous and pretty much permanent.
_________________________
2007 Ford F-150 FX-2 78,000
2007 Ford F-150 FX-4 207,000 (Sold to the Son).
2006 Dodge Ram 2500 Sport 4x4 73,000
2002 Lincoln Continental 157,000

Top
#4293043 - 01/04/17 11:13 AM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
zorobabel Offline


Registered: 01/27/11
Posts: 150
Loc: Anaheim, CA
Thanks for the replies!
I'm favoring J-B Weld at this point. Should I go with the regular or the WaterWeld?

@Panzerman - I assume you just melt a bit on the surface of the plastic, and spread it over the crack?
_________________________
1997 Maxima 151k VWB, L20195
2004 Corolla 175k QSUD, M1-209

Top
#4293109 - 01/04/17 12:14 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
bigt61 Offline


Registered: 02/12/13
Posts: 2716
Loc: Virginia
I'd get this - but likely any JB Weld will work.....

https://www.amazon.com/J-B-Weld-8217-AutoWeld-Repair/dp/B00R2CDUWE
_________________________
92 Suburban 2500 7.4L 58k M1_0w40 5yr OCI
99 Olds Aurora 4.0L 91K M1_5w30 5yr OCI
13 Dodge Dart 2.0L 29k PP 0w20 OLM OCI
70 Camaro 5.7L 59k

Top
#4293110 - 01/04/17 12:14 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
sdowney717 Offline


Registered: 10/01/05
Posts: 287
Loc: Newport News, VA
Originally Posted By: zorobabel
Thanks for the replies!
I'm favoring J-B Weld at this point. Should I go with the regular or the WaterWeld?

@Panzerman - I assume you just melt a bit on the surface of the plastic, and spread it over the crack?


You need to actually dig the tip into the crack, then force the material from the sides to fill and level.
It can work, works good on some plastics. Some it just does not work well, you get a weak result.

You can buy plastic welding rods, but the plastic types must match.

Top
#4293112 - 01/04/17 12:17 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
JimPghPA Offline


Registered: 08/22/09
Posts: 3355
Loc: Pittsburgh,PA U.S.A.
Don't mess with heat and a gas tank.
_________________________
Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa


Top
#4293131 - 01/04/17 12:36 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Johnny2Bad Offline


Registered: 05/20/13
Posts: 803
Loc: Saskatchewan, Canada
It all depends on the type of plastic you are dealing with. Some take glues well, some don't.

First choice for me would be a Putty Epoxy ... easy to apply, works on water wet or gasoline wet areas, and impervious to gasoline and alcohols. If you're dealing with certain plastics that won't glue up ... your option at that point is plastic welding (basically a form of heat melted plastic bond). Try Eastwood for the relevant supplies.

That may not work either ... some plastics get brittle if heated. But those are your basic options.
_________________________
1957 FL Straight 50 wt
1990 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
1996 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
2001 PT Cruiser [Mobil1 0W-40]

Top
#4293166 - 01/04/17 01:28 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: JimPghPA]
Panzerman Offline


Registered: 12/16/06
Posts: 3367
Loc: Port Orange, Florida
Originally Posted By: JimPghPA
Don't mess with heat and a gas tank.


You can boil gasoline. It will not go off. I showed my son this camping. Regardless you will never ignite gas with a soldering iron. Just as the other gentleman said, you heat the sides of the crack and draw the Molton plastic in and smooth it out. Makes a permanent repair.
_________________________
2007 Ford F-150 FX-2 78,000
2007 Ford F-150 FX-4 207,000 (Sold to the Son).
2006 Dodge Ram 2500 Sport 4x4 73,000
2002 Lincoln Continental 157,000

Top
#4293170 - 01/04/17 01:29 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Panzerman Offline


Registered: 12/16/06
Posts: 3367
Loc: Port Orange, Florida
The plastic welders and plastic rods are terriable. They don't work well.
_________________________
2007 Ford F-150 FX-2 78,000
2007 Ford F-150 FX-4 207,000 (Sold to the Son).
2006 Dodge Ram 2500 Sport 4x4 73,000
2002 Lincoln Continental 157,000

Top
#4294152 - 01/05/17 01:41 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
HosteenJorje Offline


Registered: 05/26/14
Posts: 1752
Loc: Columbus,Nebraska
I wouldn't take short cuts with a fuel leak. Editor of our local newspaper was working about 12:30 AM Wednesday when one of the delivery help came rushing in to tell him his car was on fire.Vehicle was a total loss. He reported that he had been going to take car in to mechanic this week for what he thought was a coolant leak. Kaboom. Too lazy to open the hood.

Top
#4294313 - 01/05/17 04:43 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: Panzerman]
Ducked Offline


Registered: 10/25/12
Posts: 1861
Loc: Taiwan
Originally Posted By: Panzerman
Originally Posted By: JimPghPA
Don't mess with heat and a gas tank.


You can boil gasoline. It will not go off. I showed my son this camping.


It MIGHT not go off. WILL not go off is something of a stretch.

If you were camping you were presumably using a naked flame?

To demonstrate how to boil petrol?

To your son?

!!!!!!

One can of course get lucky.

OK Close Shave Petrol Story.....um...bit spoilt for choice, but I find this one hard to forget.

1800 Marina estate. Prequel to the repair described above. Filled up on the way home and the smell of petrol seemed more persistent than usual. Actually stopped to check, but it was dark and (of course) [censored] down and I couldn't see anything. Home late and forgot about it.

Next day woken by nosey neighbour who complains my car is leaking petrol down the street. Indeed. ALL the way down the street gutter, under lots of much shinier cars.

What to do? Have a couple of large jerricans, but have learned that siphoning petrol out of a tank really only works well in the movies. Decide to remove the tank and decant petrol directly.

EDIT: I'd better point out, for any petrol-boilers who might be reading, that most people would probably consider this was a somewhat dangerous thing to do, but everything is relative.ENDEDIT

Lying under the car in a small river of petrol, I'd unbolted the (still almost full) leaking tank and lowered it onto my chest, where it was soaking my overalls, and had just started to wriggle out with it, when the nosy neighbour (who'd complained about the leak in the first place) stuck her head down over the gutter to check on progress.

Did I mention she was a CHAIN SMOKER?

I couldn't look at first.

Then I looked and couldn't speak.

Then I spoke, but I had to be VERY polite to avoid agitatating the STUPID COW, since the ash didn't look very stable.

One of my nearer death experiences.


Edited by Ducked (01/05/17 04:49 PM)

Top
#4294318 - 01/05/17 04:50 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
Nick1994 Online   content


Registered: 02/19/13
Posts: 7269
Loc: Phoenix, AZ
Same thing happened to my Camry last summer. Got a $50 fuel pump assembly from the junk yard. Working good.
_________________________
2000 Toyota Camry 2.2L 225k
Mobil 1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 141k
Mobil 1 HM 10w30 & Wix
2001 Buick LeSabre 3.8L 249k

Top
#4298704 - 01/10/17 01:33 PM Re: Recommend glue for sealing cracked fuel tank cover [Re: zorobabel]
zorobabel Offline


Registered: 01/27/11
Posts: 150
Loc: Anaheim, CA
I ended up using the JB-Weld Waterweld putty. There were a number of hairline cracks in that plastic, in retrospect I should have bought the new part.
But so far (48hrs), no gas leak, no gas vapor leak or smell.
Thanks for the replies!
_________________________
1997 Maxima 151k VWB, L20195
2004 Corolla 175k QSUD, M1-209

Top
Page 1 of 2 1 2 >