Any one use JB Weld on plastic fuel tanks - Chevelle Tech
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post #1 of 6 (permalink) Old Jun 6th, 20, 10:36 AM Thread Starter
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Terry
 
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Any one use JB Weld on plastic fuel tanks

My son , who is in Arizona in the Air Force just picked up a used car with a couple surprises. Its a 2002 Honda Civic. He was told the car was used by the owners son, and he recently bought another. All they told him was that one of the spark plug coils was sometimes throwing a code . Anyways the day he drove it home(last week), it died. He had to replace the alternator, which he had tested as being bad. He then told me there was a fuel smell. There was no smell when he test drove it and the ride home. But he did fill the tank. I told him to go check the tank for leaks. Sure enough where the rubber hose attaches at the tank it was stained. There was some kind of blue sealant smeared on it. He sent a pictured which appeared it was on the hose and not the tank. But it was damp, so the sealant I thought was failing. He drove it a week down to 1/4 tank. Yesterday he put on a a new hose. He filled it up and drove to his apt. took a look, and the same area was leaking! He said he didnt see any cracks at the inlet of the tank , but the old hose was cracked. So now Im trying to figure out what to do. In the picture I show here, which isnt his tank, but the same as his, Im wondering if that nozzle is maybe screwed into the tank or pressed in? It is plastic. Im thinking hopefully its screwed in and loosened a little to let fuel ooze out. Its oozing at the seam. My other thought is JB Weld. I see they have plastic repair,but says not recommended for polyethylene . Any thoughts beside replacement? Tks!!

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post #2 of 6 (permalink) Old Jun 6th, 20, 11:09 AM
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Mike
 
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Re: Any one use JB Weld on plastic fuel tanks

I have never repaired a plastic tank, I was at Carquest / Advance auto parts last week, while waiting I was looking around, they had a few plastic gas tank repair kits on one of the racks. Maybe worth checking into at a local auto parts place.

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post #3 of 6 (permalink) Old Jun 6th, 20, 12:57 PM
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Bill
 
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Re: Any one use JB Weld on plastic fuel tanks

Are you sure that piece isn't removable with a O ring seal. If not I have used Marine Tex for many plastic repairs. It is flexible, resistant to oil and gas, sticks to all plastics and very strong. It comes in black and white. Expensive but worth it IMO.
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post #4 of 6 (permalink) Old Jun 6th, 20, 1:10 PM Thread Starter
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Terry
 
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Re: Any one use JB Weld on plastic fuel tanks

Quote:
Originally Posted by Billdini View Post
Are you sure that piece isn't removable with a O ring seal. If not I have used Marine Tex for many plastic repairs. It is flexible, resistant to oil and gas, sticks to all plastics and very strong. It comes in black and white. Expensive but worth it IMO.
Im not sure, since Im here in Pgh. I have to talk to him, but to me it looks as if it is a separate piece. On a parts catalog it shows the nozzle as part of the tank. Thats why Im wondering if anyone here had some knowledge of these tanks. Thanks
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post #5 of 6 (permalink) Old Jun 6th, 20, 4:10 PM
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Rick
 
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Re: Any one use JB Weld on plastic fuel tanks

Take a look at something from 3M called "DP125". Says its a two part epoxy good for polyethylene. Sounds liquid enough to fill and seal the gap yet short enough pot life to stay close to where it would need to be poured. No idea what it might cost.



https://www.3m.com/3M/en_US/company-...3242443&rt=rud

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post #6 of 6 (permalink) Old Jun 6th, 20, 4:13 PM
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mike
 
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Re: Any one use JB Weld on plastic fuel tanks

Rough up the area with 80 grit as much as possible for better adhesion if going the epoxy route.
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