That is false. I HAVE done it and the engine will idle for at least 30 seconds with fuel flow to the lift pump completely blocked.

So I could install a valve on the incoming feul line and stop the engine by starving it of fuel. Clever.

Clever, perhaps, but hardly original.

I found an electric-triggered vacuum valve on ebay. Thanks for the help.

They still sell Generic Manual Choke Cables with a plastic Knob on them. Hooking it to the manual shutoff lever would not be difficult but you would need to make a bracket/frame to hold the outer portion of the cable to keep it from moving. And you need something on the inside to mount the Cable also.

A manual shutoff inside would be handy to have if other less mechanically inclined people drive your car. If you Vacuum Shutoff malfunctions they may not remember or be able to lift the hood, locate the Manual Shutoff and shut the engine off.

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84 300D, 82 Volvo 244Gl Diesel

Boy, what a tough crowd. Whether a person has the ingrained "anti-european" attitude or not, we all start out NOT knowing many things about these cars and their systems. Let' face it, German engineering is different - for better or for worse, and there is a learning curve. We all pretty much have to start at the bottom of that curve, so let's not be too hard on others who are just getting started - we were all there once too.

Lets not be too quick to pre-judge, because, as this thread illustrates, a lot of the time that premature judgement is based on our own pre-concieved notions that may or may not be correct...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

Thank you. If anyone thinks I'm so stupid, that I need to buy a new car, they may want to review the build I linked to for my truck. It took a couple of days to locate an electrical over vacuum switch that I knew would work. All Mercedes hoses and wiring were gone when I bought the engine.

I'm a master auto-body mechanic, and I'm now training to be a machinist.

Roy

I don't think anyone is saying you're stupid.
Some may have misunderstood your intentions, but I think rcounts is saying that ignorance is different than stupidity.

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1982 300CD Petrol/Black Leather

It certainly is.

My main point was don't be too quick to "jump" on someone assuming that they are either ignorant OR stupid. Doing so can end up making YOU look foolish when it turns out that their question is due to neither ignorance NOR stupidity - but rather due to their situation being other than what you assumed it to be...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

As is too often the case, that which is crystal clear to the writer was not adequately communicated to the reading audience. Full disclosure of the nature of the task in the original post would have prevented a truckload of confusion.

I have the shifter knob from a peterbuilt w/a 16 speed tranny w/ 2 vac switches on it.



big trucks use air pressure for a lot of stuff. 1/2 of the switches on the dash are prolly for air. meaning a pneumatic toggle switch. you could prolly get one @ any truck shop. maybe a bad one(leaker) would work fine on vac vs. pressure.

I have the shifter knob from a peterbuilt w/a 16 speed tranny w/ 2 air switches on it.
looks cool, but dont mess w/ them switches while driving.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.

Stick with the original design and fix it when it breaks.


It's also fun to watch the expression on the face of my American gear head friends when I tell them I've fixed an engine oil leak at the ignition switch!

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/mercedes-benz-cars-sale/296386-fs-1-owner-83-mb-300d-turbo-rebuild-parts.html

I think he means, it'll start burning oil, and now you've got unmetered fuel coming in. Then it explodes.

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1983 Mercedes-Benz 240D
Automatic, A/C, Power Sunroof, Power Right Side Mirror
231K Miles FOR SALE MAKE OFFER

30 seconds at idle equates to what at WOT, though?
Next time I replace my feed line, I'll have to check it out.

Of course, there's always the phone book over the turbo intake method too.

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1982 300CD Petrol/Black Leather