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Old 03-16-2020, 06:10 PM   #1
ortho stice
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Default 940 Turbo rubber fuel line under car

The short section between the hardline from the tank area and the pump inlet; what size hose is that and where can I get it? Every store around here only has 5/16" and 3/8" and this seems much bigger. On my car it has a barbed fitting halfway down with a schrader valve. Anyway after 26 years its soft and leaking and I'd like to replace with something rated for gasoline.
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Old 03-17-2020, 01:58 PM   #2
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When I had the same issue I found Goodyear half-inch fuel-rated hose at my auto parts store, worked fine. Rated 35psi which is ok in that location.
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Old 03-17-2020, 11:59 PM   #3
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If you can get it, go for the highest PSI rated fuel line you can find. I’ve read too many stories of appropriate PSI rating failing. Not something to leave to chance.
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Old 03-18-2020, 04:20 PM   #4
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I buy the correct fuel hose in bulk, it's a metric sized hose. I'll PM you later. I'll go measure the length from one of my cars as well.
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Old 03-19-2020, 08:13 PM   #5
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For a genuine Volvo part. Tasca Volvo had a very reasonable price for a meter length section of that hose. It's 12mm ID metric hose. If you have a truck parts supplier near you. They will carry the 1/2" hose that is higher rated and works.
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Old 03-25-2020, 05:08 PM   #6
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Thanks all, I appreciate it.
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Old 03-25-2020, 05:37 PM   #7
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I recently had that same hose fail again on my 88 765. I went to NAPA to get a 12 inch length of 1/2 inch fuel hose. When I removed the leaking hose I found that it had same markings as my new hose. But it was rated for emissions. Yesterday I went back to NAPA and asked for red hose. This is what I got for $4.44 per foot:

Gates Plant Master Xtreme 325 Braid 1/2" [12.5]. It has black Viton inner tube, synthetic braid, and red Viton outer. And no, the 12.5 mm is not a typo. This hose is listed as MULTI-DUTY HOSE part number MSH H-1706
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Old 03-26-2020, 06:55 AM   #8
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The OE spec hose used on the 9 series, leaving the in tank pump and heading toward the chassis pump, is NOT an inch spec hose. I found the PN by searching TASCAparts.com and ended up buying a meter from a Volvo Dealer in AZ. It is darn close to a 7/16" hose, and I've heard tell of some folks buying a truck sized fuel line to replace it. I know for certain it wasn't 3/8 or 5/16 (which are used in the engine bay on the fuel supply & return hoses connected to the engine). I know the 1 meter length was enough hose to do both of my 92 vehicles.
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Old 03-26-2020, 06:48 PM   #9
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Looks as though the OE size comes closest to 15/32 inch. I've seen this size as OE on Fords. Good luck finding it locally.
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Old 04-04-2020, 04:43 PM   #10
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I use Gates 7/16" fuel hose for that one. Fits and works great on probably 15 or 20 cars now. Go to a big truck parts supply and they should have it on the shelf for sale by the foot.
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Old 04-07-2020, 01:14 PM   #11
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Belmetric sells 12mm i.d. fuel injection hose.
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Old 04-20-2020, 12:29 AM   #12
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Quote:
Originally Posted by DET17 View Post
The OE spec hose used on the 9 series, leaving the in tank pump and heading toward the chassis pump, is NOT an inch spec hose. I found the PN by searching TASCAparts.com and ended up buying a meter from a Volvo Dealer in AZ. It is darn close to a 7/16" hose, and I've heard tell of some folks buying a truck sized fuel line to replace it. I know for certain it wasn't 3/8 or 5/16 (which are used in the engine bay on the fuel supply & return hoses connected to the engine). I know the 1 meter length was enough hose to do both of my 92 vehicles.
I'm looking on ACM.se at parts, and I need this fuel hose mentioned, so I figured I would look at what they have.

They sell only AN sizes. I think that was originally a US military spec.

Size AN-8 is 11.2mm ID, which is essentially 7/16".(EDIT: AN-8 is 1/2", not 7/16", see below) This is also a bit more of a standard sizing, maybe this would be easier to look for?

What are your thoughts?

Last edited by G-Tech 940; 05-07-2020 at 01:03 PM..
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Old 04-20-2020, 01:34 AM   #13
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https://www.belmetric.com/multifuel-...99oj6o3kti1ff0
12.0mm Flennor Multi-Fuel hose. ID 12.0mm, OD 18.5mm

Hoses are cut off a continuous spool. Charged per meter.
Roll length (longest continuous cut) is 15 meters.

Approved for gasoline, diesel fuel, water, air,heating oil and withstands higher levels of Ethanol up to E85

That means this hose can handle up to 85% ethanol in gasoline. Working temperature, -25 to 250 Degrees Fahrenheit

Working pressure 150 PSI, DIN 73379

The hose complies with the requirements of the standards SAE J30R7, ISO 4639-2

Not suitable for In-Tank applications.
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Old 04-22-2020, 12:22 PM   #14
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Quote:
Originally Posted by G-Tech 940 View Post
I'm looking on ACM.se at parts, and I need this fuel hose mentioned, so I figured I would look at what they have.

They sell only AN sizes. I think that was originally a US military spec.

Size AN-8 is 11.2mm ID, which is essentially 7/16". This is also a bit more of a standard sizing, maybe this would be easier to look for?

What are your thoughts?
-8 AN = 8/16 (1/2 inch) But you are correct on the hose ID. 11.17 mm. 7/16 = 11.11 mm
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Old 04-22-2020, 08:51 PM   #15
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This is the correct fuel hose for future reference. I know most people don't need 5 meters(I do). But it's worth having around.

https://www.fcpeuro.com/products/bmw...BoC1WkQAvD_BwE
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Old 04-22-2020, 09:31 PM   #16
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Quote:
Originally Posted by lummert View Post
-8 AN = 8/16 (1/2 inch) But you are correct on the hose ID. 11.17 mm. 7/16 = 11.11 mm
Thank you very much I appreciate it.

It makes more sense that -8AN is 1/2", I was going off the ID on the ACM page;

https://www.acm.se/en/product/an8-hose-steel-braided

(Their listing for nylon braided does not list ID)

Thank you!
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Old 05-01-2020, 07:38 PM   #17
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Quote:
Originally Posted by Dan View Post
https://www.belmetric.com/multifuel-...99oj6o3kti1ff0
12.0mm Flennor Multi-Fuel hose. ID 12.0mm, OD 18.5mm

Hoses are cut off a continuous spool. Charged per meter.
Roll length (longest continuous cut) is 15 meters.

Approved for gasoline, diesel fuel, water, air,heating oil and withstands higher levels of Ethanol up to E85

That means this hose can handle up to 85% ethanol in gasoline. Working temperature, -25 to 250 Degrees Fahrenheit

Working pressure 150 PSI, DIN 73379

The hose complies with the requirements of the standards SAE J30R7, ISO 4639-2

Not suitable for In-Tank applications.
I ended up ordering this since it's sold in meter lengths. Thanks again, everyone!
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Old 05-07-2020, 02:04 AM   #18
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Quote:
Originally Posted by Chris in Calgary View Post
When I had the same issue I found Goodyear half-inch fuel-rated hose at my auto parts store, worked fine. Rated 35psi which is ok in that location.
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Originally Posted by c1800 View Post
If you can get it, go for the highest PSI rated fuel line you can find. I’ve read too many stories of appropriate PSI rating failing. Not something to leave to chance.
I finally got around to searching for this locally. I called around to all the local truck parts dealers (including the big Volvo one) as well as hose and line specialists, some that were recommended by my dad who is in the auto industry.

The only 7/16" I can find is rated at 35 PSI. (Link)

The standard sizes carried include 1/2" and 3/8". Those I can get rated up to 225 PSI. (Link)

I am in Canada, and can't order from Belmetric without paying $25 in DHL shipping (which means automatic brokerage fee too). Despite living in a semi metric country, I can't find anywhere local that sells metric fuel hose.

Would I be better off going with 1/2" @ 150-225 PSI, or 7/16" @ 35 PSI. Better pressure rating or better fit?
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Old 05-07-2020, 10:47 AM   #19
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FWIW I have been running Earls 1/2" on mine for several years, GOOD clamps on it though, and I'm running a single in-tank pump setup so that hose will see as much as 70psi under boost. Had a clamp loosen up as the hose softened slightly after a few years, but otherwise no issues, running straight E85. No, it's not quite as snug as I'd like it, but it's also not flopping around on the hardline and it goes to an AN fitting on the other end anyway.
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Old 06-10-2020, 10:25 AM   #20
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Finally replaced the hose yesterday.

Used 1/2" High Pressure (up to 250 psi) fuel hose. Didn't have many options, this was pretty much it.

I bought a 1 foot section and ended the job with about 3-4" left over. I also have a Schroeder valve plumbed into that hose, which reduced what I used by about 3/4". I have seen some cars without the valve, probably taken off when repairing.

Had a leak from the hose clamp to the plastic fuel line (from tank) but it tightened up fine.

Btw, if you need to adjust a fitting on the HIGH pressure side, make sure to use the valve to drain the pressure FIRST, otherwise you end up with a face full of gas when you loosen off the banjo bolt to rotate the hose that leads to the fuel rail.
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Old 06-27-2020, 11:16 AM   #21
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Quote:
Originally Posted by G-Tech 940 View Post
The only 7/16" I can find is rated at 35 PSI.
Which is perfectly acceptable for between the fuel sender and the input of the main pump as fuel is under low pressure at that point. I've been running this setup on various cars for years.

Quote:
Originally Posted by G-Tech 940 View Post

Used 1/2" High Pressure (up to 250 psi) fuel hose. Didn't have many options, this was pretty much it.
You had a workable option with the 7/16". You would be better off with a correctly-sized hose than using hose clamps to make 1/2" hose clamp down enough to fit.

Last edited by Wren; 06-27-2020 at 11:25 AM..
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Old 07-01-2020, 06:33 AM   #22
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Quote:
Originally Posted by Wren View Post
Which is perfectly acceptable for between the fuel sender and the input of the main pump as fuel is under low pressure at that point. I've been running this setup on various cars for years.



You had a workable option with the 7/16". You would be better off with a correctly-sized hose than using hose clamps to make 1/2" hose clamp down enough to fit.
Agreed. The lift pump from tank to chassis, barely sees 10PSI, if that. So long as the chassis pump is running, this pump & hose feed the "suction side" of that chassis pump. If you could measure the amperage of this pump in normal operations, it would be quite low. There isn't much work being done by the pump to lift fuel ~ 2 feet in height (approx 0.5psi per foot elevation for static head). Use the 7/16" or OEM metric hose as I did.
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Old 07-01-2020, 07:40 AM   #23
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Quote:
Originally Posted by Wren View Post
You had a workable option with the 7/16". You would be better off with a correctly-sized hose than using hose clamps to make 1/2" hose clamp down enough to fit.
I don't know how you forced a 7/16 hose on. It's so much easier to order the correct hose.
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Old 07-02-2020, 01:22 AM   #24
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Quote:
Originally Posted by white855T View Post
I don't know how you forced a 7/16 hose on. It's so much easier to order the correct hose.
I've never had a problem getting it on, even working in the confines of the trunk when attaching it to the sender. I started using it when a customer was headed out of town and there wasn't any 12mm hose to be had locally before they had to leave.

It works and it works all of the time for years now.
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