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-   -   Fuel Leak 1984 300sd (http://www.peachparts.com/shopforum/diesel-discussion/307422-fuel-leak-1984-300sd.html)

74baja 10-25-2011 04:51 PM

Fuel Leak 1984 300sd
 
Hi all, I have a fairly new to me '84 300sd. I just noticed today that it has a fuel leak. I noticed a while ago that I could smell diesel when walking around the car, but thought little of it. Today, I saw spotting where I park. There is diesel fuel dripping down the A/C compressor. Does anyone know where the leak might be? Any common places on these cars? Thanks, Jack

toomany MBZ 10-25-2011 05:34 PM

There are a number of fuel lines in the area. It could be a hose, with the car running, inspect closely, yet carefully.

74baja 10-25-2011 07:26 PM

I looked more carefully, and it appears to be coming from the #1 (closest to front of car) injector. Possibly from where the fuel line enters the top of the injector. Is there an o-ring I can replace? Or are they compression fittings? Thanks

kerry 10-25-2011 07:42 PM

Typically that kind of leak is coming from the fuel return lines. Does it look wet?

whunter 10-25-2011 08:09 PM

Answer
 
Quote:

Originally Posted by 74baja (Post 2816495)
I looked more carefully, and it appears to be coming from the #1 (closest to front of car) injector. Possibly from where the fuel line enters the top of the injector. Is there an o-ring I can replace? Or are they compression fittings? Thanks

It is the fuel return hose leaking, NOT the injector line.

diesel Looped Fuel Return Hose, one meter
SPECIAL ORDER SIP Diesel Fuel Return Hose,6050780581 - PeachParts


.

74baja 10-25-2011 09:53 PM

If the return line is a black rubber line, then yes, it does look wet. But there is also fuel right near where the metal line goes into the top of the injector. Still just replace the return line? Thanks

toomany MBZ 10-26-2011 01:28 AM

Yes, as the fuel will weep around all over the place. Do this first then check again.

One meter will do the system, from the fuel filter to all the injectors.

Be aware the last line has a stopper of some sort, you can reuse whatever is in the end of the line now, usually a rivet. This is not a high pressure line, just a return back to the tank. The lines simply push on, no clamp. Be careful when removing the old ones, don't nick the injector nipples. When installing the new ones, I dip the end in motor oil to help them slip on.


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