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  #1  
Old 07-23-2011, 11:39 PM
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fuel feed and return line at the fuel distributor on a 1991 560sel

Both appear to be dry rotted and one cracked today and dumped fuel. Replacement lines cost about $300 for the pair. Can I just replace the rubber and use fuel line hose clamps?

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Old 07-24-2011, 01:41 AM
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At approximately 90PSI on the feed line I don't think any regular fuel line is up to the task. Best order the correct lines before you end up with a ball of flames poking from under the hood.
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  #3  
Old 07-24-2011, 01:52 AM
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Well, I do plan to use hoses rated for fuel injection
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  #4  
Old 07-24-2011, 11:40 AM
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Keep in mind that most fuel injection systems run half of that 90 PSI. Unless you can get hose specificly rated for CIS pressures I wouldn't do it. I also wouldn't trust a hose clamp to hold that pressure, there's a reason that the OE hose has crimp fittings.
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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE
104.980
Milled & ported head, 10.3:1 compression
197 intake cam w/20 advancer
Tuned CIS ECU
4 ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
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  #5  
Old 07-24-2011, 11:48 AM
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Return line is OK, feed line....risky.

Other option is find a hydraulic hose shop local that that can press new hoses on for you. Definitely would be much, much cheaper.
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  #6  
Old 07-24-2011, 12:35 PM
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hose clamps and kjet don't get along, too much pressure. there's a reason it's a plastic line, steel line or a very thick wall rubber hose. 90 psi will vaporize real fast through a leak. good luck, chuck.
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Old 07-24-2011, 09:27 PM
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This is on my to-do list as well. Mine are pretty "spooky" looking. I plan on replacing when I do a complete intake reseal in the next few weeks. I have the part numbers for the sec but no pricing as of yet. Al where did you price them?

John
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  #8  
Old 07-24-2011, 10:46 PM
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John, the feed line is sold on fast lane.
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  #9  
Old 07-25-2011, 12:35 PM
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So I bit the bullet and bought these two hoses. Once I remove the old ones, I'll take them to a hydraulic shop and have them rebuilt as I suspect that my 560SEC will need them soon enough.

The heat seems to be eating up all rubber parts and killing batteries.

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