Check Your Fuel Lines Guys!!

[Racerbvd]

Looks like ethanol gas has eaten a fuel line in the 911. Took the Carrera to a buddies yesterday to swap in a new Alternator and when we looked under the lid fuel had sprayed all over, a quick turn of the key, and he spotted a small leak from the pictured hose.

This Carrera has less than 100K on the clock, all stock, you you guys might want to check those lines before a long drive, mine looked fine, and I got VERY Lucky..
BTW, can I get just the one line, or do I have to order the entire Red set??

[RWebb]

J30R9 is an SAE spec. that is EtOH rated and will withstand most pressure needs (but check for MFI, and EFI)

Goodyear makes a good hose & has distributors all over

[88-diamondblue]

Very common failure now that they are well over 20 years old. Replace it all or risk an engine fire. Had mine rebuilt when I did my engine rebuld. You can buy new, expensive or have them rebult.

[E Sully]

Very common leak.
Notorious Carrera 3.2L rear fuel line leak revisited (long)

[Geneman]

Byron get the lines from len cummings on here his names is boxster something..he is the chief fuel line mojo. My 88 911 had 81 k miles and bad fuel lines.

[manbridge 74]

Currently soaking a short section of plastic CIS line in mason jar of E85.

Will report results after a year or so.

[KNS]

Len here (BoxsterGT) will fab up some new lines for you.

[Shaun @ Tru6]

Definitely contact Len (BoxsterGT) to have new lines made. he did custom 3.2 fuel lines for my 73 and high clearance oil lines for the oil tank to thermostat.

[Racerbvd]

Thanks Guy, I already ordered new lines from our host last night, but will have mine rebuilt for spares.

[FastCarFan]

I had mine replaced a couple years ago. And I carry a fire extinguisher in the car.

[bigel]

I'm wondering, how did your lines look upon visual inspection? One would think that the line would degrade from the inside out, so while my lines look to be in fine shape I'm concerned it may be a false sense of security.

Interested in anyone else's feedback who has replaced faulty/failing lines in the past.

Happy motoring...

[rick-l]

The hose cracks at the crimp connection and drips down into the heater duct. The new hose has a different crimp.

[diabolical]

Here's how one of mine looked.



This hose looked bad enough to me to replace it. I don't know if it was soon to spring a leak or what but it would have been impossible to get to had I not done it while the engine was out. I assume that's why the PO didn't swap it out as all the others had been done already.

Replacing it was stupid easy using the existing hardware. Pennies on the dollar. This was a $2.00 fix.

First, cut off the clamp. I used a dremel tool and a cut off wheel for this. We work with what we have, right?



Easy Peasy.





Ahh.. good as new! I used a heat gun to put the curve in the fuel injection hose as it was steep enough to mostly kink it. Some heat and some squishing with pliers and we have a full flow hose again with many years before it'll go bad. I used those fuel injector hose clamps rather than a standard hose clamp. I don't know if it made a difference really...

[bigel]

Originally Posted by diabolical

Here's how one of mine looked.

Mine look practically new compared to that one! I think I'll be ok for a while...

[diverdan]

Had a few fires and saw others burned to the ground. That was without ethanol. Hot summers and two months of sitting destroyed my fuel lines in just 3 summers. That was in 125 degree heat.

diverdan

[manbridge 74]

Originally Posted by diabolical

Here's how one of mine looked.


This hose looked bad enough to me to replace it. I don't know if it was soon to spring a leak or what but it would have been impossible to get to had I not done it while the engine was out. I assume that's why the PO didn't swap it out as all the others had been done already.

Replacing it was stupid easy using the existing hardware. Pennies on the dollar. This was a $2.00 fix.

First, cut off the clamp. I used a dremel tool and a cut off wheel for this. We work with what we have, right?





Ahh.. good as new! I used a heat gun to put the curve in the fuel injection hose as it was steep enough to mostly kink it. Some heat and some squishing with pliers and we have a full flow hose again with many years before it'll go bad. I used those fuel injector hose clamps rather than a standard hose clamp. I don't know if it made a difference really...

Considered the loosening effect of vibration? I'd use loctite or safety wire to keep that hose clamp from moving unless you are in the habit of checking clamps often. 2 cents.

[Peter Zimmermann]

We did many 3.2 Carrera engine compartment lines at Red Line, usually at approximately 80K miles. Always used o.e. lines (potential liability issues even experimenting), always removed the intake manifold (engine in car) and replaced the forward lines at the same time. First symptom - visible shrinking at the fittings near the middle of the engine. Second symptom - very subtle fuel smell in the garage about an hour after shut down. Third symptom - dark red stains at one or more hose ends.

[diabolical]

Originally Posted by manbridge 74

Considered the loosening effect of vibration? I'd use loctite or safety wire to keep that hose clamp from moving unless you are in the habit of checking clamps often. 2 cents.

Wow.. that was quicker than I expected.

[Chuck.H]

Hey Byron!

Don't forget there are few more rubber hoses up front from the fuel tank to the fuel pump and then to the hard lines -- I changed out my engine hoses a few years ago but forgot these, I'll get to them next time I have the car in the air... I took a look last time it was up there and they were a little soft.

Chuck.H
'89 TurboLookTarga, 338k miles