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Old 01-04-2010, 03:13 AM
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Join Date: Oct 2009
Location: 29 Palms, CA
Posts: 27
Lightbulb Spewing diesel but ingeniuity fixed it!

Well half way back home I had to make an exit and upon stopping I noticed a bad engine miss and the smell of diesel as well as some smoke coming from under the hood....!
Quickly pulled into a gas station and popped the hood to find #5 fuel injector hard line squirting right at the pump and the whole driver side of the engine bay was soaked with fuel.....
The cause was the hard line had cracked right at the flare where the fitting screws down to hold it in. Crap! It's 3:30 in the afternoon on a sunday, I'm still 250 miles from home and I have to work monday morning.

I did happen to have a hard line from a 5 cylinder non turbo that I got as a spare for my home-built pop tester but it was too short to make it to #5 on my six cylinder 300SDL Turbo.

With failure not an option and not willing to drive 250 miles with a majorly leaking hard line I decided to see what I could do. I ended up putting the short spare hard line I had on #4 cylinder by snaking it through the manifold and hand bending it to fit the shortest route possible. Then the original #4 hardline was able to reach #5 by re bending it to fit as it was plenty long enough.

Fired it up and after a little sputtering while the hardlines filled and the air worked its way out she smoothed out and ran fine the rest of the way home!

Hope everyone had a great holiday!

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Old 01-04-2010, 03:21 AM
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Join Date: Mar 2009
Location: San Diego
Posts: 2,985
A job well done to make do with a spare hard line. What is the alternative if you did not have one?
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details.

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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Old 01-04-2010, 03:30 AM
otto huber's Avatar
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Join Date: Aug 2003
Location: Alameda California
Posts: 954
Only an MB diesel guy would have a spare metal injector line in his trunk.
The only good thing about having a big leak like that is that it cleans up your engine bay really well. I had the return line to the fuel filter fail on me after a month of using biodiesel. I took a rag to dry everything off and was surprised to see how nice the paint is in there.
'81 300SD
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Old 01-04-2010, 06:54 AM
layback40's Avatar
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Join Date: Nov 2009
Location: Victoria Australia - down under!!
Posts: 4,023
Desert Dog,
I hope you cleaned the fuel off the engine mount, they have a habit of failing a few weeks after being drowned in fuel.

Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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