Hi All,

The crankcase breather hose on my 1984 300D is broken. I ordered a replacement but it did not come with the flat part attachment on the air filter bracket. I found an entire line from Kent / M$$ource site that is new and am planning to order it.

Is it ok to run the car temporarily (as in a week) with no breather hose? Or should I try to cobble something temporarily? I would rather not do a temp job as I don't want it to bind or get plugged.

Thanks,

Dkr.

It won't hurt anything but it will make a mess underhood. Back in the day, all crankcase vents were open to the atmosphere but routed downward to dump onto the road surface.

Thanks for confirming. That should give me some breathing room.

Dkr.

Cobble up some sort of hose or you're be very, VERY sorry you didn't .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Why? Please explain.

Dkr.

Refer to the response by "Rocky Raccoon". The answer to your question should be fairly obvious.....

It will make an oily mess of ALL of the engine bay, potentially damage components either from oil saturation or the cleanup process and although remote, create a fire hazard over time from oil on manifolds and exhaust components.

Put something together to direct and catch the oil fumes.

Good luck!!!

__________________
"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Because the Diesel engine, unlike Gasoline engines, maintain a very high quantity of oil droplets in the air expelled from the hose ~ this is why there's a complicated cyclonic oil / air separator in the air cleaner ~ in these engines it's normal to have a lot of oil mist and droplets being expelled so if the hose isn't connected you'll have not just massively oil vapors coming out but also a lot of tiny oil droplets that will spray all over the entire engine compartment and Diesel contaminated oil / air attacks all the plastics and rubbers under the hood, why it's to important to keep after oil leaks, seeps and weeps .

Typical German engineering : it's wonderful as long as you keep after it but allow it to get oily and you get a serious domino effect that will make you hate the car .

Easier to just keep after the endless little things that always need minor touching .

This simple hose if left open will ruin the motor mounts in a matter of months for example .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Is no one going to acknowledge this solid breather pun? NO ONE?!

__________________
{2010 Mazda 3 266,000mi} - daily since new, Airlift suspension + some chunky sway-bars: fastest pass 17.7@77MPH
{1987 300SDL 256,000mi} - stock turbo @ 22lbs straight piped + a whole bunch of pre-turbo water/meth injection, 722.3 with increased line pressure, special sauce, and shift kit: fastest pass 16.5@82
{1992 964 Carrera 4 Frankenstein ??,???mi} - 993 forward dated, Speedster conversion, GT45 + E85: fastest pass 12.5@113

We were waiting for you ~ mission accomplished .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Was too cranky in this case to comment on the pun...was exhausted from the pressure...

__________________
"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Groan.......

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better