C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Dec 8, 2014 | 11:18 PM
  #21  
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Interesting-
This probably explains why I have to replace the rubber vacuum caps on all my carburetors every couple of years. They look exactly like these fuel lines!
Crappy overseas rubber caps.....
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Old Dec 9, 2014 | 03:33 PM
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Has anyone considered the high operating temperatures , like if you are running a 195* thermostat. It's my own opinion (FWIW) that high operating temperatures shorten the life of all the non-metallic things under the hood.
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Old Dec 9, 2014 | 03:44 PM
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Everyone reading this thread is going to go out and check their fuel lines now
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Old Dec 9, 2014 | 09:19 PM
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Checked mine a few months back and it is doing the same thing. Considering my options for replacement.
Thanks '75 for bringing the problem to light.
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Old Dec 10, 2014 | 01:36 AM
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From what I recall of my automotive training days...to make a tight bend in tubing without collapsing the tube you fill the tube with very fine sand. Then use a tube bender.

Mr. Shea you got any input on that?
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Old Dec 10, 2014 | 06:49 AM
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Originally Posted by AboveTheLogic
Everyone reading this thread is going to go out and check their fuel lines now
Which is a very good thing.

I want to say the "new" fuel blends (ethanol) have much to do with deteriorating rubber fuel lines.

Steve

Last edited by Cavu2u; Dec 10, 2014 at 06:55 AM.
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Old Dec 10, 2014 | 06:52 AM
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Originally Posted by phat87
From what I recall of my automotive training days...to make a tight bend in tubing without collapsing the tube you fill (make that "packet") the tube with very fine sand. Then use a tube bender.
Indeed, it does work.

Steve
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Old Dec 10, 2014 | 08:18 AM
  #28  
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Originally Posted by Cavu2u
Which is a very good thing.

I want to say the "new" fuel blends (ethanol) have much to do with deteriorating rubber fuel lines.

Steve
I would too, but I have never put an ethanol blend in my vette.
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Old Dec 10, 2014 | 11:39 AM
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Probably 75% of the small engine repair going on,( mowers weed trimmers and the like) are the result of the fuel we now have ruining the soft parts in the carbs. There is a place near here that offers 100% non ethonal fuel. What I've suggested to customers is use this fuel and seems to be curing the issue. Not sure if this is the cause in this post or not, because the inside looked good. Lots of money being spent on small engine repair because of the fuel.
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Old Dec 10, 2014 | 07:08 PM
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Originally Posted by ezobens
Interesting-
This probably explains why I have to replace the rubber vacuum caps on all my carburetors every couple of years. They look exactly like these fuel lines!
Crappy overseas rubber caps.....
I've noticed that with the vacuum caps also, anyone know where to get good ones?
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Old Dec 11, 2014 | 06:23 PM
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Originally Posted by Duane4238
I did something completely different than those here. I cut and bent steel tubing with a very tight radius, without flattening the tubing. I used those pieces for the bends in the original "S" hoses, and then used rubber fuel line for the straight pieces and to attach the steel to the fuel pump nipples. This allows for any flexing that might occur. I did this change over 15 years ago, and it's still in place with no leaks. The steel tube bends were a bugger, if I remember correctly. I made quite a few of them before I got the ones I was pleased with to use.
I'd love to get some pics for you guys, but that can't happen until sometime in April, as the Vette is put away for the winter. And right now it's a little on the chilly side here in Western New York. Happy Holidays.
Duane
Ditto... fabbed up metal bends.
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Old Dec 11, 2014 | 10:17 PM
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Originally Posted by AboveTheLogic
Everyone reading this thread is going to go out and check their fuel lines now
I did.
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Old Dec 12, 2014 | 08:31 AM
  #33  
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I'll wager the engine won't miss now when I tromp on it a bit. How long will it last? We'll see.

Steve
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Old Dec 12, 2014 | 01:29 PM
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Originally Posted by AboveTheLogic
Everyone reading this thread is going to go out and check their fuel lines now
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Old Dec 15, 2014 | 11:39 AM
  #35  
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my factory replacements turned to spongy rubber in the few years it sat up even with stabil in the tank, probably from ethanol. in the process of changing the tank, pump and lines along with a carb rebuild. Going with modern fuel injected rated hose. Avoid ethanol at all cost.
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Old Apr 29, 2017 | 02:43 PM
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Almost 3 yrs now and still good with the custom hoses.
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Old Apr 29, 2017 | 03:12 PM
  #37  
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JIm
Seen inner rot happen on cars that sit rather than being driven whats your opinion on that one?
replaced all mine with goodridge hose so far so good
Rubber hoses would just turn to mush if it sat without fluids actually moving through them

No rocket scientist here but seems quality is hard to find

OEM can do it, had 15 yr old radiator hoses that were excellent in/out
Anything from the auto parts store just from picking it up you could tell they were thinner flimsier.. lucky to get a good year or two out of them
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Old Apr 29, 2017 | 08:59 PM
  #38  
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Hmm... I replaced those hoses about a year ago. Better keep an eye on them.
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Old Apr 29, 2017 | 09:55 PM
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Thank You for the update....75

Brian
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Old Apr 30, 2017 | 09:24 AM
  #40  
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I know this is an older thread, but if your going to replace those lines, us a better quality hose like this stuff.....
http://ph.parker.com/ca/en/fuel-line...-fl-series-397
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