95 SE Pinhole leak in nylon fuel line - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-20-2013, 06:48 PM   #1
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Default 95 SE Pinhole leak in nylon fuel line

Been getting a fuel smell inside today. Got it home asap and took a look around. Found the leak. Apparantly the nylon line that connects to the firewall side fuel rail is leaking right before it makes the 90* bend. This is NOT the quick disconnect, but a section right where the line is secured in the plastic clip attached to the EGR bracket. As soon as the fuel pump primes I get an oh so fine stream of fuel.

Question is, what'* the best way to fix this? Never had to deal w/ nylon lines before. Knowing that these system typically see 50psi or so I don't want a "should work" fix, I want to know what the safe, true fix is.

The only thing I can come up with would be to get a hose connection that is barbed on both ends, cut the section of line out and then use the steel barb fitting to join the 2 sections back together again, but not sure if that would hold.

Need assistance soon as this is my only working vehicle right now and parts stores will be closing soon.
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Old 01-20-2013, 07:04 PM   #2
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Here is a pic of said issue. It where the shiny part of the line is on the bend.

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95 SE Pinhole leak in nylon fuel line-photo_zps447dfbbc.jpg  
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Old 01-20-2013, 07:28 PM   #3
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The proper "true" fix would be replacing that part of the nylon line. All the way from the passenger side of the fire wall, up to the fuel rail is the entire piece. It'* a $80 part at gmpartseast.com

Or...this can be done one of several ways.
1. Get a soldering iron and just poke the hole a little. Basically, melt just enough of the nylon to seal the hole.
2. Get some JB Weld, put a dab on the hole, cut a piece of rubber fuel line around the nylon line(like a bandaid) and put a screw clamp around that and tighten.
3. Get the Dorman fuel line repair kit and have your way with it using barbed couplers, etc etc.

I'm sure others will chime in with other ideas.
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Old 01-20-2013, 07:42 PM   #4
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Ok, so let'* say I get the entire line from gm. It looks like the nylon line disappears under the maxifuse center. I assume if I jack the car up and look up from underneath that I can see where the other end is where it meets the steel line?
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Old 01-20-2013, 07:48 PM   #5
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That is correct Jason.
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Old 01-20-2013, 07:52 PM   #6
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Thanks Mike! I'll dig around for the part # and get it ordered. I really don't like "temp" fixes on fuel related things. I drive my daughter around in this car and drive 100mi/day for work. Really don't want to roast marshmallows on the side of the highway

One last thing, since the 2 fuel lines go under the maxifuse center, is there enough room to push the new one through that opening and down to the steel line, or is there more that I have to remove? Almost sounds too easy.
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Old 01-20-2013, 07:57 PM   #7
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That sounds about right. Been awhile since I poked in that vicinity.

But, if I were you, I would get a good peek at all the metal fuel lines underneath the car first. Old plumbers rule is, you touch one line, it will start to leak on the other side of the house. Or something like that. Just be prepared to get new lines.
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Old 01-20-2013, 08:02 PM   #8
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Will do. I havent seen the line that far up, but the only other place that has rust on the lines that I know for sure are the vertical areas right back by the rear tire (typical). I had to replace the fuel pump last year so I've seen more of that area than I cared to, lol..

In fact when I smelled fuel the rear lines and the fuel filter area were the first places I checked.
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Old 01-21-2013, 09:28 AM   #9
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i can attest to the dorman barbed fittings. having done it to my 03 monte and driving it 100k before i traded it in with one, i drove that car all over the country and didnt give it a second thought. in fact its soooo much easier than messing with soft rusted metal ones if i had a problem i would replace the whole thing, they make metal to plastic adapters for the back and you can run plastic all the way. or you can cut out the section that has the hole, the carquest here has that dorman kit and sells parts and made me a section that has that quick connect on it and a section of hose. then there is a barbed fitting that joins the two past where the hole was, you just make a coffee cup of hot water soak the tube ends in it for a while, couple dabs of grease and slide it on. i had to do it the first time i put a fuel filter on my monte so around 50k and i sold it at 180 and never had a leak
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