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  #1  
Old 10-21-2008, 01:02 PM
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Leaking Fuel Injector?

I have a 1993 300SD and have a fuel leak that I cannot identify. I replaced the overflow hoses and it's still getting pretty wet. Does not appear to be leaking from the line, I am aware that the lines can spring a leak. It really seems to be getting the wettest right around where the top part of the injector screws into the bottom part, but I have never heard of an actual injector leaking. Has anybody else had this experience?

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Old 10-21-2008, 03:00 PM
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Have you had them apart/ serviced lately? they are lapped together to form a seal.
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Old 10-21-2008, 03:16 PM
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How many are leaking?
As you said it is most often the poor condition of the hose/s that causes leaks.
Next it can be that the little nipples that the hoses get pushed onto get damaged when some one uses a screwdriver or other metal object to pry the old hose off or cuts the hose of with a knife and scratches the nipple sealing area.
Another problem with the nipples is that they are pressed into the upper injector body and have a circular crimp around them. Ounce in awhile they loosen up and leak. If this happens you have to replace the upper half of the injector.
Leaks between the 2 halfs of the injector can some time be fixed by removing the Injector From the Engine and Re-Torquing the Injector Nut.
The last thing that happens is that the cone shaped ends of the Injector Hard Fuel lines can get damaged (often from overtightening) or the area on the Injector where they seat is damaged.
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Old 10-21-2008, 07:48 PM
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Thanks for all the good info!

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