Fuel Rail

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Mattt123
Posts: 32
Joined: Sun Sep 21, 2014 1:55 am
Your car is a: 1980 Pininfarina

Fuel Rail

Post by Mattt123 »

Hi Guys:
I recently smelled fuel while driving my 1981 fuel injected spider 2000. I checked under the hood and found that the 35 year old rubber hoses attached to the fuel rail were corroded and fuel was seeping through. I though I would replace them but noticed that they are press fitted onto the fuel rail where they attach to it. The other ends have hose clamps but the ends that attach to the fuel rail cant be removed. Does anyone know a procedure for fixing this problem? Do I have have to get a whole new fuel rail? Has anybody else dealt with this?

Thanks
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lglade
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Joined: Sat Dec 07, 2013 7:05 am
Your car is a: 1984 Pininfarina
Location: Mukilteo, WA

Re: Fuel Rail

Post by lglade »

No, you don't need to replace the fuel rail. Those are Bosch Collar Locks and they are NOT swaged on. So not only can you remove the hoses but you can also reuse the collar locks if you want to keep the original look.

Use an Exacto knife to cut the hoses lengthwise under the collar and continue the cut past the end of the hard tube inside. A little heat from a heat gun and some gentle twisting/tugging will get the hoses off the rail. Try to avoid damaging the collar lock and try not to cut the hard tube of the fuel rail, but it's a pretty easy process.

If you use the right diameter replacement fuel hose (see link below), you can reuse the collar locks but the OD of the hose is critical, so some guys change out the hoses with standard 5/16 FI hose and then use fuel injection hose clamps. I reused my collar locks (probably cost me an extra $20 to get the exact right hose), but the choice is yours:

https://www.midwest-bayless.com/p-8163- ... 80-on.aspx

Be sure to replace ALL the fuel hoses in the engine compartment, and you may as well replace your injector seals while you're at it. If you decide to just use bulk hose, be really careful on your hose lengths. Too long or too short will give you fits when you go to reinstall the injectors.
Last edited by lglade on Sun Oct 16, 2016 7:14 am, edited 1 time in total.
Lloyd Glade- Mukilteo, WA
1984 Pininfarina Spider Azzurra
1962 Fiat 500D - wife's car
2015 Subaru Outback
2017 Ford Focus RS
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RRoller123
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Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: Fuel Rail

Post by RRoller123 »

+1 on that last bit of advice. The length of the short hose sections to the injectors is critical. You want them just a tiny bit long, to keep some inward seating pressure, but not too much. Shorter is a disaster. They have a very slight curved bend after installation at the correct length.
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
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azruss
Posts: 3659
Joined: Sun May 30, 2010 12:24 pm
Your car is a: 80 Fiat 2000 FI

Re: Fuel Rail

Post by azruss »

My OEM hoses measure between 2.470 and 2.480" cap to cap. I cut my hoses to 2.360 and used the original caps rather than hose clamps. Have had no issues in 4 years. As others have said, use some precision in cutting hose lengths. I did all my measurements with a dial caliper.
Mattt123
Posts: 32
Joined: Sun Sep 21, 2014 1:55 am
Your car is a: 1980 Pininfarina

Re: Fuel Rail

Post by Mattt123 »

I see, That's great news. Thank you all so much for the advice and for the link to Bayless.
This forum is such a great resource.
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