So after dropping the tank 2 times in 2 years, it is time to do it again. 2.5L duke, low pressure TBI. Each time, fuel pressure does not exceed 5 or 6 PSI, and drops immediately.. pointing towards a pinhole in the gummy 1.6" hose. So Gates 27097 would be the usual choice for an alternative replacement. At $15. I went on McMaster to look for hose.. found 54605K34 low pressure petroleum 3/8" ID (50PSI max). I messaged them with a question.. is the hose immersible? IE is the inside and outside of the hose gasoline compatible? They answered back yes. I bought a foot of this hose for $1.63. It fits the old pump that I saved. Dumb idea? Genius in motion? Tell me why this is a bad idea Ogre..
Adding.. ID is 3/8 on old and new. OD on old one is 0.7" OD on McMaster one is 0.62".
[This message has been edited by Chris Eddy (edited 03-07-2018).]
Did you specify "submersible in fuel"? They may have assumed water, otherwise. That hose you mentioned has a description stating safe for outdoor use. Easy to see where a phone tech might give a misleading answer. I believe the correct submersible hose is something to the tune of $20 per foot. I can imagine it's for a big reason...
The hose is legitimate looking.. looks like auto store stuff.. marked clearly 3/8", SAE number, made in USA, date of mfg (7-19-2017), and other cryptic numbers. I did specify gasoline when I asked the tech support person.. the tech clearly stated "Both the inside and outside of this hose is compatible with gasoline". And what could go wrong, other than another dam ned pinhole if it is not acceptable? At this point I would accept a year until failure, as that would double my current batting rate.
Did you specify "submersible in fuel"? They may have assumed water, otherwise. That hose you mentioned has a description stating safe for outdoor use. Easy to see where a phone tech might give a misleading answer. I believe the correct submersible hose is something to the tune of $20 per foot. I can imagine it's for a big reason...
I agree with the viper....it's too easy to say 'yes' over the phone and move on to the next caller.... plus you have the words immersible and submersible....sort of the same but not really. Ask around in the Mall and somebody probably has a foot of the good stuff sitting on a shelf.
A big issue people don't realize is it just doesn't have to be petrol-proof, this ethanol is hell on natural rubber too. Hose that is gasoline safe is no longer fuel rated because of it.
NAPA did sell a 12" piece of ethanol submersible/immersible hose on a blister card. It's a little pricey at a little more than $1 per inch, but would anyone drop a tank again just to save $16? So it's worth the pricey price.
Dayco hose SAE 30R10 rating for submersible fuel line and the part number is 80160. Fuel injection rated at 100psi. I found this at Advance in a search for ethanol submersible hose.
The hose is legitimate looking.. looks like auto store stuff.. marked clearly 3/8", SAE number, made in USA, date of mfg (7-19-2017), and other cryptic numbers. I did specify gasoline when I asked the tech support person.. the tech clearly stated "Both the inside and outside of this hose is compatible with gasoline". And what could go wrong, other than another dam ned pinhole if it is not acceptable? At this point I would accept a year until failure, as that would double my current batting rate.
After having the hose fail twice, for the 3rd time you find the cheapest hose you can and take the tech guys word over the phone. The listing for the hose on McMaster doesn't even give the SAE number.
It is very simple... What was the SAE number? If it is anything except J30R10 toss it and buy some J30R10 hose that has been independently tested and rated for the submerged application. Sure it is relatively expensive, but it is the right hose for the application and you can avoid dropping the tank for these failures.
I just found this in something that Dennis LaGrua gave me permission to quote to the Georgia Fiero forum. Ethanol submersjble hose is spec J30R10. J30R9 that most clerks will offer is ethanol safe but not submersible.
Originally posted by Chris Eddy: So after dropping the tank 2 times in 2 years, it is time to do it again. 2.5L duke, low pressure TBI. Each time, fuel pressure does not exceed 5 or 6 PSI, and drops immediately.. pointing towards a pinhole in the gummy 1.6" hose. So Gates 27097 would be the usual choice for an alternative replacement. At $15. I went on McMaster to look for hose.. found 54605K34 low pressure petroleum 3/8" ID (50PSI max). I messaged them with a question.. is the hose immersible? IE is the inside and outside of the hose gasoline compatible? They answered back yes. I bought a foot of this hose for $1.63. It fits the old pump that I saved. Dumb idea? Genius in motion? Tell me why this is a bad idea Ogre..
Others above and more in 10 plus years said use J30R10 type hose to prevent your exact problem.
50 psi @ 72° F Max. Pressure Material: Buna-N Rubber with Blended Rubber Cover
isn't the same
If you think ~$18 for 1 foot is bad... NAPA wants $26.99 for PART # NBH H315 w/ 1 foot hose, Dayco 80160 ~$22 for 1 foot (80163 10 feet is ~$130) You can find this on Ebay but Ebay is full of Counterfeits and I won't buy important items there. Amazon has a big Counterfeit problem too so watch what you buy.
Note: Should be using this type clamps https://www.amazon.com/Fuel...-Pack/dp/B0040CU0HM/ or sim to it. Not "cheap" clamps w/o protection that can cut into the hose like most Standard worn screw clamps that leave worm cuts in SS to cut into the hose. There are worm types w/ extra metal so cuts can't cut the hose but often can't find them a local stores.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
J30R10 is the only way to go. I've even gotten pumps that supplied the hose with a new pump (walbro) that had the hose fail. Last time this happened, I used the J30R10( NAPA usually has this). That was over 10 yrs ago with no issues yet! Buy a foot, and keep the spare for next car, friend, neighbor, etc...
OK, it is starting to make sense. I found this SAE document on a link.. http://www.volksbolts.com/faq/SAEJ30.pdf Which clarifies it. The hose from McMaster is 30R7, which is not submersible. The 30R10 seems to be the only one listed that is submersible. But.. what was that that I got with the last two fuel pumps that failed? It was very gummy, no markings. But they failed. I will get the right stuff.. if it was flawed, everyone would have had nothing but grief, so I ought to be better off. I will get 30R10.
Originally posted by fierofool: Has anyone ever checked with an auto dealership to see what they have? Surely they replace an in-tank fuel pump, occasionally.
Could be anything or hose come w/ new pump. Dealers often don't cares if pump hose fails again in 1-5 years. If their smart, have a roll of J30R10 hose because They can likely get cheaper wholesale/jobber price that normal DIYs don't get.
Why? Business can and often do have accounts w/ various parts outlets besides Dealer Networks w/ GM et al. I've had accounts w/ auto and electrical like Graybar etc. Price you sell online doesn't = price paid for account customers. Depending on exact type of account etc can see 20-50% less then list on most items and often even if you pay cash at checkout.
quote
Originally posted by Chris Eddy: But.. what was that that I got with the last two fuel pumps that failed? It was very gummy, no markings. But they failed.
Others types can work in normal gas for a long time. Problem is now most areas have 0-10% ethanol that "eats" them when submersed. E85 is far worse and can "eat" a lot more things and why Flex-Fuel vehicles often have SS tanks and hard lines.
The only hoses I've used with success that came with the pump was a corrugated straw looking plastic tube. Otherwise, it's gotta be the J30R10 for ~$15 a foot. I get it at Carquest a bit cheaper than other places. Autozone and O'Riley's don't even carry it. Regular fuel line hose breaks down into that gum you describe when submerged. Usually just plugs up the strainer though so the pump is reusable if that's any consolation. Doesn't change having to drop the tank, unfortunately.
OK, it is starting to make sense. I found this SAE document on a link.. http://www.volksbolts.com/faq/SAEJ30.pdf Which clarifies it. The hose from McMaster is 30R7, which is not submersible. The 30R10 seems to be the only one listed that is submersible. But.. what was that that I got with the last two fuel pumps that failed? It was very gummy, no markings. But they failed. I will get the right stuff.. if it was flawed, everyone would have had nothing but grief, so I ought to be better off. I will get 30R10.
Cheap pumps come with cheap hose... I started tossing the hose that comes with the pump and buy my own J30R10 hose locally.
plus you have the words immersible and submersible....sort of the same but not really. Ask around in the Mall and somebody probably has a foot of the good stuff sitting on a shelf.
I've never left... but thanks. 
