Metal fuel line replacement - 1984 K20 Chevy Suburban - The 1947 - Present Chevrolet & GMC Truck Message Board Network

62ChevyC60Wrecker · 05-23-2023, 09:11 PM

How much of a P.I.T.A. is it to replace the hardlines on the frame of a 84 K 20 Chevy Suburban? I Currently have the tank dropped for replacing the sender and old fuel lines. I am only planning on replacing the rubber lines currently but am thinking about doing the hard lines at a later date.........

**kwmech** · 05-24-2023, 11:48 AM

You'll either have to find a vendor that manufactures the lines and order up. OR make them yourself when the time comes using the existing as a template. Are they rusting out ?

62ChevyC60Wrecker · 05-31-2023, 12:50 AM

No; not at this time, but I do need to really examine to see if there may be air leaking into the lines though as they are original to the truck. I am half tempted to switch the main and the return to the fuel pump to all rubber if the time comes.

62ChevyC60Wrecker · 06-02-2023, 12:21 AM

The truck is originally a Texas truck. All the rust the truck has is only "surface" where the trim that "was" on the Suburban either fell off or was removed by the original owner. The only "cancer rust" is on the outer rocker panel for the back door driver side; I have the rocker to replace rusty rocker. I just need to get to a HS classmate's body shop; she has everything I need to replace it with. She's been in the industry (body work) for the last 30 years. The lines I am replacing are all the rubber lines and one of the vent lines for the filler neck, as I couldn't remove the clamps to remove the one hard line that went between the filler neck and the tank which is fine with me.

James Lamb · 07-05-2023, 05:06 PM

My Suburban in an '89, lived its life in NC and AL, lots of rain. I recently replaced all the rubber lines on mine and saw no reason to replace the metal lines. If you don't see active, deep pitting in the metal lines I would not bother. Not like they have ever been under high pressure.

62ChevyC60Wrecker · 07-06-2023, 10:06 AM

I did send 5 gallons of fuel through the main and the return from
The engine bay and found that I just had to prime the main. Its been running
Great since last week when I got it buttoned up

05-23-2023, 09:11 PM	#1
62ChevyC60Wrecker Registered User Join Date: Nov 2016 Location: St. Paul, MN. Posts: 34	Metal fuel line replacement - 1984 K20 Chevy Suburban How much of a P.I.T.A. is it to replace the hardlines on the frame of a 84 K 20 Chevy Suburban? I Currently have the tank dropped for replacing the sender and old fuel lines. I am only planning on replacing the rubber lines currently but am thinking about doing the hard lines at a later date.........

05-24-2023, 11:48 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,641	Re: Metal fuel line replacement - 1984 K20 Chevy Suburban You'll either have to find a vendor that manufactures the lines and order up. OR make them yourself when the time comes using the existing as a template. Are they rusting out ?

05-31-2023, 12:50 AM	#3
62ChevyC60Wrecker Registered User Join Date: Nov 2016 Location: St. Paul, MN. Posts: 34	Re: Metal fuel line replacement - 1984 K20 Chevy Suburban No; not at this time, but I do need to really examine to see if there may be air leaking into the lines though as they are original to the truck. I am half tempted to switch the main and the return to the fuel pump to all rubber if the time comes.

06-02-2023, 12:21 AM	#4
62ChevyC60Wrecker Registered User Join Date: Nov 2016 Location: St. Paul, MN. Posts: 34	Re: Metal fuel line replacement - 1984 K20 Chevy Suburban The truck is originally a Texas truck. All the rust the truck has is only "surface" where the trim that "was" on the Suburban either fell off or was removed by the original owner. The only "cancer rust" is on the outer rocker panel for the back door driver side; I have the rocker to replace rusty rocker. I just need to get to a HS classmate's body shop; she has everything I need to replace it with. She's been in the industry (body work) for the last 30 years. The lines I am replacing are all the rubber lines and one of the vent lines for the filler neck, as I couldn't remove the clamps to remove the one hard line that went between the filler neck and the tank which is fine with me.

07-05-2023, 05:06 PM	#5
James Lamb Registered User Join Date: Mar 2019 Location: Knoxville AL Posts: 74	Re: Metal fuel line replacement - 1984 K20 Chevy Suburban My Suburban in an '89, lived its life in NC and AL, lots of rain. I recently replaced all the rubber lines on mine and saw no reason to replace the metal lines. If you don't see active, deep pitting in the metal lines I would not bother. Not like they have ever been under high pressure. __________________ 1989 Suburban 1500 4 x 4 1989 BMW 325i 1945 Willys MB Jeep 1959 Triumph TR3A

07-06-2023, 10:06 AM	#6
62ChevyC60Wrecker Registered User Join Date: Nov 2016 Location: St. Paul, MN. Posts: 34	Re: Metal fuel line replacement - 1984 K20 Chevy Suburban I did send 5 gallons of fuel through the main and the return from The engine bay and found that I just had to prime the main. Its been running Great since last week when I got it buttoned up

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