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#16
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Yes the lines are new, changed out again last night after taking these pictures.
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) Last edited by vstech; 02-01-2012 at 01:24 PM. |
#17
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I agree, the fuel leak seems to come from the return soft lines...
pull off your soft return lines, and look over the nipples SUPER CAREFULLY... I bet they are cracked, or nicked, and fuel is leaking there...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#18
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hmmm...they looked ok...I'll look them over again
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#19
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I was able to have my injectors rebuilt without lapping. No leaks. I think its hit or miss, honestly. But the fact that two are leaking tells me that perhaps you didn't clean the injector bodies well enough or that its the return lines. You could try to switch the return lines around and see if the leak follows, or there could be something with the injector hard lines.
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#20
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I replaced both of the injectors return lines last night and one of them is dry today...the other is still leaking pretty badly. I'm a little disappointed that I havent heard back from the vendor on my question of if the injectors were lapped as part of the rebuilding process ... they seem a very through and proficient shop, so I doubt they would leave that out, sounds like an important step to have the highest probability of success.
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#21
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Hard lines carry the fuel to the injector and soft lines carry the weep fuel back.
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1977 300D Lost coolant while someone else was driving 1983 300D Can't run without oil 1985 300SD (gone but not forgotten) 1990 300TE 4matic Sold 1991 Yamaha Venture 1975 Kawsaki 250 triple 1974 Honda 200CL 1951 8N Ford 2008 Wildfire 650C |
#22
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no it's not the hard line i do not believe..
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#23
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5 has been dry since changing the jumper line (twice) after replacing the line from 3 to 4 again, third time, 4 was still wet...
well I double checked the hard line and got a VERY slight turn out of #5 and an a larger but still very slight turn out of #4....3 thru 1 arent leaking so I didnt touch them..... sprayed em down with brake clean so they're dry....we'll see how it goes when I take her out today..
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#24
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tightening down the hardlines stopped the leak...alls good in the hood..cept the vendor..(yall know the name I wont drop it) never returned my email asking about if they're lapped as part of the SOP for rebuilding
Quote:
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#25
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Leaking (spraying) through the hardline nut center
RE: 603.961 My number 4 injector started spraying fuel upward through the hardline nut at the injector connection.
I got it down to a seep by pulling the nut and realigning the hardline tappered end as perfect to verticle as possible. Now it is spraying again after replacing the line clips...moved the line a tad I guess and rocked the line head at the injector mating surface? Lines don't seem to be leaking unless it is the cone shaped fixture joint fitted to the injector side of the hard line. Can I reset the surfaces (injector inlet & hardline cone shaped end) with some valve grinding compound or something. Or do I need both new injector and new line? Thanks Just in case your thinking "return line" that's not it
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1986 300SDL 440,xxx |
#26
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Hmm
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#27
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I'm having the same problem here. I bet it's the same vendor too, got the nozzles from them and had another diesel shop put them in as I don't have the tools, and now injectors 1, 3 and 5 are leaking. 1 and 3 I KNOW it's not the lines as I can see the fuel and some air bubbles coming off the seam where the injector meets the engine, I might have not tightened them right, which I'll try and see if that fixes things. #5, I can check the line and write here how it goes... Glad to see this thread going on
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[/SIGPIC]~cirrusman 1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang" [SIGPIC] 1983 Toyota Tercel (Tommy, The little Toyota that could) 1965 Ford F100 (Grandma Ford) 2005 Toyota Sienna (Elsa, Wife's ride) Gone: 1988 Toyota Pickup 2004 Subaru Outback 1987 Cadillac Fleetwood Brougham 1986 Volvo 740 GL Station Wagon - Piece of junk. 1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P. 1987 Pontiac Fiero GT |
#28
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I'd like to add I thought that I had this problem.
I recently had a set of injectors and cleaned and shimmed. I installed them and noticed moisture in the creases of one of the injectors. Since I'd installed new return hoses and the hard lines were properly tight, unlapped and leaky injectors would be the only thing amiss, right? I was wrong. After letting the engine idle and get up to temp fuel began to bubble ever so slightly from around the collar nut. So for future reference, you can't always assume that you have leaky injectors until you carefully examine everything else.
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1974 240D "Boldie" 170K.- New timing chain/freshly rebuilt IP/replaced valve seals/injectors/upgraded stereo/new Bilsteins with Yokohamas/fresh paint and rocker panels plus lots of welds. |
#29
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Fuel Leak at the fuel line nut / injector connection
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On your tip by phone today I bought a new #4 metal fuel line, yanked the old line and compared the two at the injector ends. For a moment I thought I had bought an incorrect line as the end that mates with the injector had a lot more "material" on the end then the old one. Old one was very cone shaped while the new one looked somewhat convex (upside down bowl shapped). Well gave it a shot and "Oh Mama" no more leak...... Old (60+ yrs) MB tech at the dealer says as you did Whunter that through vibration over the years these diesels wear out the connecting line(s) ends to the point they will not hold (seal) against the pressure. Looks like I'll have a few more comming in the future. Additional take away...refresh those hard fuel line retaining clips...helps minimize fuel line vibration and connection end wear. Thanks again Whunter!
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1986 300SDL 440,xxx |
#30
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Great
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Could you please post several pictures of the worn end? Thanks. |
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