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My rudimentary assessment of Fuel Line Replacement Kits
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termuehlen Premium Member
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PostPosted: Tue Sep 20, 2022 9:41 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

DanHoug wrote:
termuehlen wrote:
I have 2 Vanagons. The 5/16" Gates brand high pressure fuel line failed in both of them this year.


would you be willing to find a section of the Gates hose with the part number intact and post a picture?


Sorry Dan, willing but not able. I already threw out the old.
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PostPosted: Mon Sep 19, 2022 12:30 pm    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

termuehlen wrote:
I have 2 Vanagons. The 5/16" Gates brand high pressure fuel line failed in both of them this year.


would you be willing to find a section of the Gates hose with the part number intact and post a picture?
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PostPosted: Mon Sep 19, 2022 11:59 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

I've never had a problem until now.
Mind you, I never had a problem either until yesterday, the fuel filler grommet split in just 4 months. Fucking junk, GW supplied. Probably JP Group garbage, as usual with this brand.
It's becoming hard to get anything good made in rubber , this is a plague!
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termuehlen Premium Member
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PostPosted: Mon Sep 19, 2022 11:41 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

I have 2 Vanagons. The 5/16" Gates brand high pressure fuel line failed in both of them this year.

The Subaru powered Westy was moth-balled over the winter. This spring I removed the engine cover, checked the fluids, connected the battery and started it up. The main fuel supply hose looked like an irrigation soaker hose. Many tiny pinholes spewing gas in all directions. The hose was replaced with the engine conversion 10 years ago. Lesson learned. Don't wait ten years to replace the fuel hose. Fair enough.

The Syncro sat for almost 2 months towards the end of this summer. Opened up the engine cover, checked the fluids, connected the battery. Started it up (I was going to write fired it up, but that seems like a bad idea.) Before I was able to get out and walk to the back, I noticed it smelled rich, followed by it smelled like gas, so shut it down. Walk around back again, and sure enough, the right side fuel rail is soaking wet. In 2018, just over 4 years ago, I pulled the injectors, sent them in for service and reinstalled with Gates hose. In just over 4 years time, the hose is gooey on the inside and leaking between the hose and the fuel rail at the clamp locations.

Image may have been reduced in size. Click image to view fullscreen.


I don't know if new German made 7mm high pressure fuel hose is going to be an improvement, but I am changing out all of my Gates hose now. I'll let you know in 5 to 10 years how the new hose performs.
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Last edited by termuehlen on Mon Sep 19, 2022 3:48 pm; edited 1 time in total
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djkeev
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PostPosted: Sat Mar 05, 2022 5:29 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

Honestly the 7mm vs 5/16" fuel line debate is over rated.
The smaller the size, the less the small difference makes between mm and imperial sizes.
In my 1/4" sockets, I don't even carry metric sizes because the imperial ones fit just fine.
Same with 1/2" vs 13mm, the difference is so minor that I've rarely encountered a problem swapping them.
I say rarely because I have found a hex or two that were that fussy.

Probably the vast majority of WBX engines on the road with improved fuel lines are running 5/16
I Haven't ever heard of an issue.

I just saw a post by Injector-Rehab, the new miracle injector kid on the block, saying they mistakingly shipped some injector rails with 3/8" barbs instead of the proper 5/16" barbs!
Right there tells you something.......... 5/16" instead if 7mm simply is a non issue.
1mm is about the diameter of a small paper clip wire.

We commonly use 1 1/2" radiator hose without issues, 3/4" heater hose without issues, 5/32" vacuum line ........ there are real concerns in the World to worry about. Your fuel line being 5/16" is NOT one of them.
I have run across situations where you cannot use 1/2" hose on a 12mm fitting (A/C Evaporator drain nipple)

Anyway....... todays opinion for what it is worth.

Dave
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PostPosted: Fri Mar 04, 2022 12:00 pm    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

It doesn't allow side-crimping but I bought my Oetiker-branded tool at the local irrigation supply store for about $25 when I was expanding my underground sprinkler system (maybe not every area such a store though).

Removing the clamps is actually super easy if you have a small flathead screwdriver. Just stick it into the "ear" and twist a couple times.
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PostPosted: Fri Mar 04, 2022 11:46 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

korfmach wrote:
djkeev wrote:
Just to note.
The Van Cafe kit does indeed supply screw type clamps but to call them "cheap screw clamps" is anything but truth!

https://vancafe.com/fuel-line-replacement-kit/

These appear to be ABA or NORMA clamps which are top quality merchandise.
Dave


I got those with my line replacement kit. They are indeed good quality. They also leaked, and I replaced them with injection-type screw-down clamps. They seem to work well, and a field repair doesn't require the Oetiker tool.


I've used the Van Cafe kit on multiple vehicles and have never had a line leak afterwards.
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PostPosted: Fri Mar 04, 2022 9:12 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

[quote="korfmach"]
djkeev wrote:
Just to note.
The Van Cafe kit does indeed supply screw type clamps but to call them "cheap screw clamps" is anything but truth!

https://vancafe.com/fuel-line-replacement-kit/

These appear to be ABA or NORMA clamps which are top quality merchandise.
Dave



I've done a few Vanagon fuel line replacements, I agree that the VC clamps are of very good quality. Some times they won't sell you a kit, due to the popularity of those clamps, as they go out of stock fairly quickly. I really appreciate the "email when available" feature, and ordered a spare fuel line kit and a couple dozen extra of the good clamps.

COUNT your VC kit clamps when you get it. COUNT your clamp points BEFORE you start the job. No need to ask why I bought the extra clamps.

Also, if you do get a leak, I suggest you ADD another clamp at that location.
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PostPosted: Fri Mar 04, 2022 9:03 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

djkeev wrote:
Just to note.
The Van Cafe kit does indeed supply screw type clamps but to call them "cheap screw clamps" is anything but truth!

https://vancafe.com/fuel-line-replacement-kit/

These appear to be ABA or NORMA clamps which are top quality merchandise.
Dave


I got those with my line replacement kit. They are indeed good quality. They also leaked, and I replaced them with injection-type screw-down clamps. They seem to work well, and a field repair doesn't require the Oetiker tool.
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PostPosted: Fri Mar 04, 2022 9:02 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

?Waldo? wrote:
The firewall fitting is useless and should be eliminated to remove a couple potential leak points.

The crimp clamps are a PITA, especially from an on-the-road-repair standpoint.


Both of these points are Spot On.

Although I am not against spending good money on good tools, and I do have several Knipex's, yet ANOTHER tool (and bag of fasteners) to carry onboard while out on the road is a hard pill to swallow.
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PostPosted: Fri Mar 04, 2022 8:54 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

jAndrew wrote:
revolution337 wrote:
Knipex 10 99 i220 are the pliers you want for crimping those Oetiker clamps. They are nice because you can use them straight on, or at 90* if space is limited. Made in Germany, very high quality.

https://www.amazon.com/Knipex-Tools-10-99-i220/dp/B01I3H6UIC

Image may have been reduced in size. Click image to view fullscreen.


these are the same ones I have and can attest to the quality.


Now this is neat, side crimping!

Knipex does great tools, I used to be a small hardware store manager in France, I would always twist the arm of the sales rep to get me a freebie tool for myself on my big orders Laughing
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PostPosted: Fri Mar 04, 2022 8:23 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

revolution337 wrote:
Knipex 10 99 i220 are the pliers you want for crimping those Oetiker clamps. They are nice because you can use them straight on, or at 90* if space is limited. Made in Germany, very high quality.

https://www.amazon.com/Knipex-Tools-10-99-i220/dp/B01I3H6UIC

Image may have been reduced in size. Click image to view fullscreen.


these are the same ones I have and can attest to the quality.
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PostPosted: Fri Mar 04, 2022 7:20 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

The firewall fitting is useless and should be eliminated to remove a couple potential leak points.

The crimp clamps are a PITA, especially from an on-the-road-repair standpoint.
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PostPosted: Thu Mar 03, 2022 11:14 pm    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

I ordered from Buslab, if I recall - same product, half the price of the 'major' vendors. Plus they had the protective sheathing at the time, had I needed it.

I think my 12mm was fairly newly installed from the PO, so I did not replace it. I was mostly concerned with the hoses near any spark at the rear of the van.
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PostPosted: Thu Mar 03, 2022 9:58 pm    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

leecat wrote:
When I changed engines I ordered all German 7mm fuel hose, and it's REALLY nice stuff - plus the stock OEM heavy plastic fuel-line sheathing that goes on the lines directly over the engine will NOT fit over 5/16 line, but fits really nice on the 7mm stuff.


Who did you order from?

What about the LP hose? 12mm or 11.xx size the OEM spec?
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PostPosted: Thu Mar 03, 2022 6:47 pm    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

When I changed engines I ordered all German 7mm fuel hose, and it's REALLY nice stuff - plus the stock OEM heavy plastic fuel-line sheathing that goes on the lines directly over the engine will NOT fit over 5/16 line, but fits really nice on the 7mm stuff.
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PostPosted: Thu Mar 03, 2022 10:08 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

Abscate wrote:
How much line do you need? I’ve got a couple of spools of fuel injection line that are paid off, oetikers sre $1 each from Fastenal

Isn’t this like $30 of kit all in?


I suppose the standard amount that comes in a kit- 12 ft of 7.9mm HP hose, and 2 ft of 12mm LP hose. I guess I could and maybe should buy them individually at the local VW shops but they tend to gouge you. When I did the shifter service, I bought the boots at one of Halsey, they were charging $20 a boot! I stopped giving them by business after that.


clift_d wrote:
It's worth highlighting that generic fuel hose, with an SAE 30R9 or SAE 30R14 specification, may only have been tested for compatability with fuel that has a 5% (E5) ethanol content, as this is the minimum that is required under the SAE J30 standard - the relevant section for R9 is section 4.5 on page 7, and for R14 section 4.10 on page 8.

The decent manufacturers ensure that their fuel hose exceeds the requirements of R9 or R14 - for example the stuff that Brickwerks in the UK sell, or a product like Gates Barricade, which are both also rated for 100% (E100) ethanol content.

Given that many countries are already using fuel with 10% ethanol content (E10), you will need to be careful to check what you're getting before you buy generic hose online.


Well now ya have me re-thinking and I’m probably going down the rabbit hole looking for 100% rated hoses! Thanks man! Laughing

SyncroHead wrote:
Size Matters.

Proper size is 7mm.
Not 7.94mm (5/16")
Not 8mm.
5/16" = .3125" = 7.94mm. VW definitely didn't use 7.94mm hose.

But it's "close enough", right? In a pinch if that's what the FLAPS had, but I wouldn't order 5/16".

5/16" is 13.4% larger than 7mm.

To put that in perspective, imagine this scenario...
You wear 32" waist pants and the store is out of 32" pants. The sales person tells you, "We have 36.5" waist pants, they'll fit just fine." You definitely wouldn't buy and wear the 36.5" pants.
How much larger is 36.5" compared to your properly fitting 32" pants? 13.4%, the same as between 7mm and 5/16". Properly fitting fuel lines are much more important than properly fitting pants!

But, many people use 5/16" line and report it works fine. Probably, and I’d substitute if I had to. But given a choice, I would not take use over-sized lines in a fuel system.

Recommend brands are COHLINE 2240 or Gates Barricade.

Jim Davis[/i]


Good points! Any hose that is 7.9mm is out!
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PostPosted: Thu Mar 03, 2022 9:36 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

Size Matters.

Proper size is 7mm.
Not 7.94mm (5/16")
Not 8mm.
5/16" = .3125" = 7.94mm. VW definitely didn't use 7.94mm hose.

But it's "close enough", right? In a pinch if that's what the FLAPS had, but I wouldn't order 5/16".

5/16" is 13.4% larger than 7mm.

To put that in perspective, imagine this scenario...
You wear 32" waist pants and the store is out of 32" pants. The sales person tells you, "We have 36.5" waist pants, they'll fit just fine." You definitely wouldn't buy and wear the 36.5" pants.
How much larger is 36.5" compared to your properly fitting 32" pants? 13.4%, the same as between 7mm and 5/16". Properly fitting fuel lines are much more important than properly fitting pants!

But, many people use 5/16" line and report it works fine. Probably, and I’d substitute if I had to. But given a choice, I would not take use over-sized lines in a fuel system.

Recommend brands are COHLINE 2240 or Gates Barricade.

Jim Davis[/i]
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PostPosted: Thu Mar 03, 2022 8:46 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

Knipex 10 99 i220 are the pliers you want for crimping those Oetiker clamps. They are nice because you can use them straight on, or at 90* if space is limited. Made in Germany, very high quality.

https://www.amazon.com/Knipex-Tools-10-99-i220/dp/B01I3H6UIC

Image may have been reduced in size. Click image to view fullscreen.

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PostPosted: Thu Mar 03, 2022 8:36 am    Post subject: Re: My rudimentary assessment of Fuel Line Replacement Kits Reply with quote

I know everyone has different income and budgets, I really get that. But I will go out on a limb and say if you do not have $30 for the ear clamp pliers then you cannot afford a Vanagon. With that tool I can't see how it can be messed up- even a tool like me can use them.

ABA clamps on connections you may need to disconnect more often maybe.
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