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  #1  
Old 08-03-2008, 10:15 PM
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4 fuel leaks.....Is there no end?

USLD........I hate the stuff. I have 1 injector leak(still not sure
where exactly) 2 lines at the pump, and the bolt on top the
fuel filter.

How is everyone else stopping/dealing with the leaks?

BTW......I still got 30+ on the last tankful.
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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project
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  #2  
Old 08-03-2008, 10:32 PM
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I've had tons of leaks since ULSD but Forced will tell us it doesn't cause leaks. I'm not convinced it doesn't.
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1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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  #3  
Old 08-03-2008, 11:22 PM
Jeremy5848's Avatar
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Viton o-rings.
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Our all-biodiesel family
1995 E300D (W124) . .239,000 miles My car
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  #4  
Old 08-03-2008, 11:54 PM
ForcedInduction
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Quote:
Originally Posted by JackG View Post
USLD........I hate the stuff. I have 1 injector leak(still not sure
where exactly) 2 lines at the pump, and the bolt on top the
fuel filter.
ULSD isn't the cause. If it was there would be FAR more people with problems.

Quote:
How is everyone else stopping/dealing with the leaks?
Fixing them if they happen.

30+? If you do just highway travel I could belive it, otherwise I'd bet there are some errors affecting the math.
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  #5  
Old 08-03-2008, 11:55 PM
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Never had a fuel leak since ULSD was officially used. Only leak I had was when the primer pump screwed the pump plunger loose. Tightened it and it's been fine ever since.

I do have a new one to replace it with. Fuel return lines have been replaced with new OE beige/orange lines from the dealer. Heard they fit much better. No problems either.

Do you guys replace the fuel lines that run between the main fuel filter element to the IP? I'm talking about the supposedly clear lines with banjo bolts at each end. Mine are already brown inside, and were like that from the first day I got the car.
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  #6  
Old 08-04-2008, 01:14 AM
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Quote:
Originally Posted by MBeige View Post
Never had a fuel leak since ULSD was officially used. Only leak I had was when the primer pump screwed the pump plunger loose. Tightened it and it's been fine ever since.

I do have a new one to replace it with. Fuel return lines have been replaced with new OE beige/orange lines from the dealer. Heard they fit much better. No problems either.

Do you guys replace the fuel lines that run between the main fuel filter element to the IP? I'm talking about the supposedly clear lines with banjo bolts at each end. Mine are already brown inside, and were like that from the first day I got the car.
I haven`t had any problems with ULSD, but I did snap off the line with the 3 way with the fuel return, cigar hose. the line going down to the IP.
when hooking everything up on the new engine, that old brown line snapped like a potato chip. the new one was around $20.00. I was amazed how pliable and clear a new one is.
I still need to replace the other two.

Charlie
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  #7  
Old 08-04-2008, 01:16 AM
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Thanks Charlie. Do you have a part number for those? Do you just remove and replace them? (no more bleeding the fuel system of air)?
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  #8  
Old 08-04-2008, 02:14 AM
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Location: Walnut Creek, CA & 1,150 miles S of Key West
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Get viton orings from fryerpower.com.

The orings shrink due to differences in aromatic chemicals used in the different blends (ULSD vs LSD) of fuel; in addition to their normal rate of deterioration (seals/orings dont last for ever ya know).
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  #9  
Old 08-04-2008, 02:54 AM
ForcedInduction
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Quote:
Originally Posted by TMAllison View Post
Get viton orings from fryerpower.com.

The orings shrink due to differences in aromatic chemicals used in the different blends (ULSD vs LSD) of fuel; in addition to their normal rate of deterioration (seals/orings dont last for ever ya know).
Even if ULSD did affect o-rings, his car has none to leak.
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  #10  
Old 08-04-2008, 06:24 AM
t walgamuth's Avatar
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Location: Lafayette Indiana
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My flexible tank hoses are suddenly leaking.

I assumed it was because of the fact that they are 25 years old but the leaks did come on suddenly.

Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #11  
Old 08-04-2008, 07:12 AM
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Quote:
Originally Posted by ForcedInduction View Post

30+? If you do just highway travel I could belive it, otherwise I'd bet there are some errors affecting the math.
359 miles on 11.796 gal......Do the math

95% secondary roads and rarely over 45mph
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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project
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  #12  
Old 08-04-2008, 11:57 AM
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Location: Walnut Creek, CA & 1,150 miles S of Key West
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Quote:
Originally Posted by ForcedInduction View Post
Even if ULSD did affect o-rings, his car has none to leak.
Opps. Thought he was talking about a SDL, now all is see are early D's and SD's in his sig.
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JG - Check your Odo with GPS sometime and see how accurate it really is.
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N. Calif. & S. of Key West

09' E320 Bluetec 77k
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  #13  
Old 08-04-2008, 09:09 PM
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Quote:
Originally Posted by TMAllison View Post
Opps. Thought he was talking about a SDL, now all is see are early D's and SD's in his sig.
******
JG - Check your Odo with GPS sometime and see how accurate it really is.
This is in the coupe
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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project
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  #14  
Old 08-04-2008, 10:09 PM
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Quote:
Originally Posted by MBeige View Post
Do you guys replace the fuel lines that run between the main fuel filter element to the IP? I'm talking about the supposedly clear lines with banjo bolts at each end. Mine are already brown inside, and were like that from the first day I got the car.
During a filter modification I broke the plastic hose from the Secondary Filter down to the IP. I needed a longer hose there and also between the Fuel Supply Pump and the filter.
I replaced both with 1/4" ID black Fuel Hose; with clamps.
To remove the plastic hose I heated the ends on the barbs with a butane lighter and pulled.
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  #15  
Old 08-04-2008, 10:31 PM
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I never experience any leak using USDL
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Benz's in our garage
2008 E320 Bluetec 127k mi

Sold
1987 300SDL 200K+
1994 S320 181K mi


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1995 E320 Special Edition [Rear ended]
1984 300SD [Head on collision]
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