W123

81 240D hard brake pedal in rain

I have an'81 240D that is my daily driver from Marysville to Boeing Field. While she has 295T the car has always received very good care by mechanically adept owners (I am the second owner) and runs beautifully.

Except- when it rains quite a bit after a few miles the brakes will act as if the pedal is “hard” or fading and it takes longer for the car to stop. If I hold my foot (medium to light pressure) on the brake for a few moments, there is a barely perceptible pull to the right-then the brakes return to their normal good stopping ability.

The problem may not occur again-not even if I go through a mud puddle. This only occurs when it rains and we’re talking a steady rain! It never occurs with dry pavement or simply moist pavement (fog, misting etc.).

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84 300TD wagon broken hood release pull

well i'm almost at my wits end with this thing - certainly at my wallets end. Can anyone tip me toward an easy way to get the hood up after the brilliantly designed plastic latch that you pull between the grill breaks? I'm sure i can spend half the day coming up with something but if there are any quick ideas out there i'd love to hear them. Thanks in advance.

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Cold starting experiences/early 300D/240D - info

I'm not asking for help...just making an observation...have a '77 240D and a '79 300D acquired this summer here in 40 below possible Montana (where even treated dirtydiesel won't fly)...The 240D worked great until the cold morning start was sub 14 degrees F! 300D worked fine...Diagnosed issue and couldn't believe the 240s glow plugs were shot (all 4)! I thought they couldn't start at all w/o glow plugs??? On the 240, we thought it was our biodiesel...but it must have been the glow plugs as the 300 had the same fuel and started right up. These cars are amazing!

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Keep Having to Replace Battery 1985 300TD

I've had my 300TD for two years now. Between my initial pre-purchase test drive and picking up the new car, the battery went dead and wouldn't take a charge. The original owner put in a new Mercedes Benz battery. A year later, that battery went dead and wouldn't take a charge. I bought an Autozone 49-DL battery (same size and amp/hours as original). A year later, it is dead and won't take a charge. I've been trying to charge it with the battery disconnected from the car and it charges endlessly. Any idea what causes this or where to start troubleshooting?

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oil out the dipstick 1982 300 D

I just purchased an 82 300d turbo. I changed the oil and drove it 60 miles. Checked the level at my destination topped it up (less than 1/2 a quart) drove home. 3 miles from home the oil pressure plummeted STOP! Oil all over. dipstick not entirely seated in its tube. Added four quarts to get level back on the dipstick. What the bleep! Today I hooked a hose up to the dipstick tube and put the other end in a plastic container. Sure enough filled up half a quart of oil in about 20 minutes.

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transmission differences, 300Dt / TD / CD / SD (W123, W126)

I'm looking at cobbling together an engine and tranny, a car with a blown engine, and a car with a wasted tranny..

The problem is.. The car with the wasted tranny (300SD) is in Arizona.. The car with the wasted engine (300Dt) is in Missouri, and the available donor engine transmission is in Michigan..

..Oh, and I'm in Ohio, closest to the engine/tranny, but even that's 70 miles from me.

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SVO 300TD dies while at idle in loop mode

Hello
I have single tank conversion that dies at idle in loop mode but runs fine when under acceleration.
After it dies I have to switch the valve to return and purge the system of what seems to be air then I'm fine until the next time I let it warm up at idle. It doesn't have this problem when the valve is on return. I thought it might be a filter issue but I have no loss of power when going down the road.
Thank you this forum has been a big help.
Rob

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