Have a Fuel Leak in 2008 - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 10 (permalink) Old 01-24-2017, 09:35 AM Thread Starter
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Have a Fuel Leak in 2008

Car started to not want to start cold from the first turn over, then the second turn of the key the car started fine and ran normally. Started smelling gas after parking the car and exiting. Noticed a couple of times a leak in front of the left rear tire. It would be dry after a couple of hours. Looks like the fuel in the line is leaking out, but something is keeping it from leaking from the tank. Wondering, is this just a leak in the line, or is there a bigger problem. IIRC the pump is in the tank, so that would keep fuel from continuously running out. Looking to see if this is any sort of common issue, the leak in front of the left rear tire.
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post #2 of 10 (permalink) Old 01-24-2017, 10:15 AM
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Common issue, you will need to replace the line or part of it. The lines gather road grime inside the heat shielded area and corrode. All will be back to normal once you get this fixed. Just had my 07 done.

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post #3 of 10 (permalink) Old 01-24-2017, 10:26 AM Thread Starter
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Hoped for as much. with my luck I was expecting to hear I had to pull the tank, redo the bottom of the body, overhaul the engine and replace my headlights just to fix this issue.
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post #4 of 10 (permalink) Old 01-24-2017, 12:54 PM
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lol, just a 2 foot piece of fuel line.
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post #5 of 10 (permalink) Old 01-24-2017, 03:44 PM
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Do you remember what size is that fuel line, for future reference ?

Thank you
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post #6 of 10 (permalink) Old 03-25-2017, 09:58 AM
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Is this a problem with 09 too?
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post #7 of 10 (permalink) Old 03-25-2017, 01:04 PM
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Yup, same line and it rust at the same spot.

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post #8 of 10 (permalink) Old 03-26-2017, 06:01 AM
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Thanks I better check that
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post #9 of 10 (permalink) Old 03-26-2017, 06:11 AM
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Cut the foil covering the fuel lines and wash all the dirt that accumulates because of it then spray rust proofing all over the lines. It will last longer.

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post #10 of 10 (permalink) Old 04-04-2017, 06:06 PM
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I literally just fixed this on my 09 cobalt LT today. When I searched for the issue I found this thread https://www.yourcobalt.com/forums/pro...side-tire.html. Used the info as a guide to fix mine. From finding the leak spot, running around for parts and actual fix, took about 2 1/2 hours cost under $15.

On my car, the leak was inside the plastic clip that held the lines near the rear driver's side tire. The clip was plugging the hole in the fuel line. As soon as I popped that clip open fuel started pouring out leaving me with no choice but to fix it myself immediately so I can go to work tomorrow.

Used 3/8 Fuel injector hose, Fuel injector hose clamps and the smallest pipe cutter I could find. Cutting the line was the hardest part because of the clearance.
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