So i ve replaced the oil pressure line going to the gauge in order to fix the leaking oil at my feet, but even with new hose drip drip, does anyone know if the gauge itself leak? is there any other source of oil in that area?

It may be the gauge itself or your vacuum pump may need to be replaced. It could be dripping from the lock cylinder....

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bummer. i would wipe it all off and see what part gets damp with oil first...

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'77 240D, 504H, OM617.952, etc.

Pull the brown vacuum line under the hood and inspect it to see if it has oil in it.

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1977 300d 70k--sold 08
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

I have a spare 123 F-O-T gauge available, PM if interested, if yours turns out to be a leaker.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Pulled the kick down panel and i see drip drip right below the oil gauge, weird thing is that i have tried swapping the line and it still drips, there is no sign of oil at the threads and both lines andi dont see why its leaking.
Maybe its leaking inside the gauge? anyone

the bellows inside the oil pressure gauge have failed. you need a new gauge.
very common.

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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!

This is common.
.

__________________
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/

i have replaced it with a pre 1980 gauge, it is in metric, the problem am having now is the fuel gaquge now says full all the time, i have installed and reinstalled the big plug with many pins and made sure it aligns but still always a full tank.
anybody seen this?

I tried it before and it will not work. The wiring is different and is not 100% compatible. It may be better just to swap out the mechanical oil gauge. It is a bit fiddle-ly but it is doable. You have to pop out the needle using 2 spoons and carefully remove the unit.

Good luck.

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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. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

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.

wow really ok am going to try this one, has anyone heard of the kick down switch being damaged by excess oil from the cluster? i have a mess of oil so bad and now my car wont shift unless i let go of the pedal, just another thing to worry about now lol

My oil pressure failed and it seeped a lot of oil into the mat, so much that even i cleaned the floor with some degreaser and dried it i have more and more coming out from under floor boards, it is really annoying.
Any tips on this oil spillage control?
thanks

ps it justy seems like ill neatly clean up and it keeps coming out from underneath.
thanks.Vaccum pump is fine, no oil at shutoff whatsoever and i did replace leaky oil presure gauge so oil isnt coming from there.

So after replacing my leaky fuel pressure gauge I been noticing oil and more oil staining my shoes and clothes.
But the oil is not coming from above, but from the anti noise barrier underneath my carpets!!!

I must have 1/2 a gallon of dirty diesel oil under there, I mean material is destroyed, I don't know what to do??

Overwhelmed cleaning this.

Thanks, any help appreciated

FYI: The driver carpet and foam can hold roughly one US quart, been there - done that = nasty clean up...

The only suggestion I have is to soak it in a pan of:
* Shout.
* Dawn dish soap.
* Palmolive dish soap.
* Tide laundry detergent.
In the driveway; after soaking:
#1. Put an even 3/4 inch layer of oil dry on the driveway.
#2. Put a towel or heavy cloth (you don't care about) over the oil dry.
#3. Lay the soaked floor mat on the towel.
#4. Put a towel or heavy cloth (you don't care about) over the floor mat.
#5. I placed two layers of half inch plywood over the pile.
#6. Because it was handy, I parked the driver front wheel of a 300SD on the pile for several hours.
#7. Repeat as needed.
................................After you have the worst of the oil removed, steam cleaning may get the remainder out.

If the foam backing is beyond salvage, scrub it off, and have your local upholstery shop make a new anti noise foam backing.
I have had good luck coating all sides of the new foam backing with the spray rubber undercoating, then glue it to the carpet.

or

Take it to a carpet cleaning company.

If the carpet is coming apart, you need to find a good used one or order a new front set.
With a year, model, VIN# I can generally get the color code for correct part number.


.

__________________
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/

Thanks Hunter!