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  #1  
Old 08-10-2011, 07:52 PM
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Thoughts on My 240D???

I posted over on the benzworld forum but figured the more opinions the better. So my friend has been wanting a 240D, and we found this car...and total love the style and its pretty clean consider the 480$ price. It is the w115 style body. Problem is there is something a miss in the engine. Video below. People are saying it could be an injector, others a rod...then it could be a barring or piston. I've never dug into a OM616 in any other engine for that matter and neather has my friend...So we are trying to figure out what to focus on and if it does need a tare down...how complected would it be? Another problem we are seeing is the oil pressure reads 0, when your driving it will raise to the 1st mark. Thinking that maybe the oil pump went bad and destroyed something else in the process.

http://www.youtube.com/watch?v=IYQGYQPS44Y

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Old 08-10-2011, 08:49 PM
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with real low oil pressure I would say bearings are gone. you will need to take the engine apart more then likely. I would not run it any more. Bad knock in the video, sounds like bearing knock. 1 bar should be the lowest it gets, hot and at idle.

You may be better to get another used but good running engine, and sell/give this engine away to someone who needs parts, or that can rebuild it.
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  #3  
Old 08-10-2011, 09:35 PM
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Originally Posted by 47dodge View Post
You may be better to get another used but good running engine, and sell/give this engine away to someone who needs parts, or that can rebuild it.
This is what I was thinking. Would a engine from a w123 240D fit in a w115 or is the swap very complicated? I would imagine finding a w115 om616 would be a little hard.
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Old 08-11-2011, 12:03 AM
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Hmm... unless you Really Really REALLY like that particular body style, year, and car... I'd pass even at $480.

You are going to spend at the bottom basement very least $500 for a used engine from a junk car. $1000 for a pretty good engine if you're lucky. $5000+ for a professionally rebuilt one.

I aught to know. I love my old car irrationally. And No. The engine wasn't good.
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Last edited by Codifex Maximus; 08-11-2011 at 12:04 AM. Reason: And No. The engine wasn't good.
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  #5  
Old 08-11-2011, 12:18 AM
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Originally Posted by Codifex Maximus View Post
Hmm... unless you Really Really REALLY like that particular body style, year, and car... I'd pass even at $480.

You are going to spend at the bottom basement very least $500 for a used engine from a junk car. $1000 for a pretty good engine if you're lucky. $5000+ for a professionally rebuilt one.

I aught to know. I love my old car irrationally. And No. The engine wasn't good.
Well unfortunately it's been bought already....so theres 2 options I suppose now....fix it or scrap it The body is straight, interior nice, new clutch, smooth ride and no rust.

I will have to see what my friend thinks of all this...probably this weekend will pop the valve cover off and see if we can see anything.

Guess we might have to look around for an engine....I told him, that if you put 1500$ into this car....you'll never need another car for the rest of your life...so will see...and hey a vintage benz is better then a prius
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Old 08-11-2011, 01:20 AM
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Originally Posted by cooljjay View Post
Well unfortunately it's been bought already....so theres 2 options I suppose now....fix it or scrap it The body is straight, interior nice, new clutch, smooth ride and no rust.

I will have to see what my friend thinks of all this...probably this weekend will pop the valve cover off and see if we can see anything.

Guess we might have to look around for an engine....I told him, that if you put 1500$ into this car....you'll never need another car for the rest of your life...so will see...and hey a vintage benz is better then a prius
Well, sounds like that one just might be worth saving. The no rust is very important. And after all, it's an older model and might begin to appreciate a little providing you take real good care of it.


To the others:
Would a bad or worn oil pump make such a noise? I mean, he does have real low oil pressure.
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Old 08-11-2011, 01:29 AM
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Originally Posted by Codifex Maximus View Post
Well, sounds like that one just might be worth saving. The no rust is very important. And after all, it's an older model and might begin to appreciate a little providing you take real good care of it.
That is my thoughts. They only made 131k were as with the w123 they made 448k. Heres a few pics that were on the ad....need to take better photos, think its funny how it faded from a cool red color to pink



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Old 08-11-2011, 02:44 AM
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That oxidization will probably buff right off. I'm no expert at that though. Some of the other guys are and they'll probably point you to a nice writeup on how to make her shine.

Good luck!

P.S. Don't throw away your old engine. If it runs, it has value and could be rebuilt.
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  #9  
Old 08-11-2011, 03:03 AM
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Quote:
Originally Posted by cooljjay View Post
Well unfortunately it's been bought already....so theres 2 options I suppose now....fix it or scrap it The body is straight, interior nice, new clutch, smooth ride and no rust.

I will have to see what my friend thinks of all this...probably this weekend will pop the valve cover off and see if we can see anything.

Guess we might have to look around for an engine....I told him, that if you put 1500$ into this car....you'll never need another car for the rest of your life...so will see...and hey a vintage benz is better then a prius
It sounds like you expect to spend $1500 and then never spend a penny more - I hope you realise it doesn't work like that.

Listening to the sound on the video doesn't give me any warm wet feelings - I would most certainly not run it again until you have worked out why that oil gauge is registering zero.

On the OM616 and non turbo OM617 engines you can access a drive shaft that runs off of the intermediate shaft down onto the oil pump. The intermediate shaft runs between the timing device and the injector pump. You can in principle just turn the oil pump with the help of an electric drill for example to see if that is the bit that is causing the low oil pressure. If that sounds like something you'd be willing to do - reply here and I'll post some pictures for you.
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Don't leave that there - I'll take it to bits!
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Old 08-11-2011, 09:54 AM
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It's hard to see from those pics, but I don't see rust in the usual places on that car, and the paint is obviously original. And yes, the pinkness will buff right off. Even with a dying engine, I think $480 is a great price for that body, assuming the interior isn't too bad.
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Old 08-11-2011, 10:30 AM
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i think that color is the same as my car... it should buff clean but first you will need a new engine... there are some major differences between a W115 engine and a W123 engine but its nothing that cant be modified... you will need to use your oil filter and air cleaner setup and im pretty sure that the turbo 617 will not fit
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Old 08-11-2011, 01:09 PM
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Quote:
Originally Posted by cooljjay View Post
I've never dug into a OM616 in any other engine for that matter and neather has my friend...So we are trying to figure out what to focus on and if it does need a tare down...how complected would it be?
If you have never done any engine work, you aren't going to want to start with a Mercedes diesel. An old (pre-TDi) VW would be a much safer bet and much cheaper if you FUBAR something along the way.

You have bought a very old car. Though these old models were great cars, that does not mean every one of them is worth saving. Especially by someone who apparently is going to have to pay a mechanic to do the work.

Sorry but that is the sad fact of life.

If you bought this because you wanted an old Mercedes and this car is all you could afford, then you have made a tactical error -- but the good news is that it's a well-worn path. Wecome to the old saying: "There is nothing more expensive than a cheap Mercedes."

Used motors can be had for these cars, but don't be in a hurry to buy the first one you find. Another sad fact is that the four-cylinder engines have to work much, much harder than the five-cylinder ones to haul these cars about. Consequently they operate under more strain and many eventually die from a variety of causes, most commonly either plain bad luck or owner neglect.

If you are looking for a one-week miracle to put the car back on the road... then I suggest you plop it onto Craigslist and pass it on to someone else.

If you are in for the long haul and want to ask questions and learn, then there are lots of folks on this list who will help you out.
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Old 08-11-2011, 01:35 PM
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Charmalu Charlie might know of a spare engine for you. He spends more time at the PNP than he does at home.
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  #14  
Old 08-11-2011, 06:22 PM
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the oil pump will not make the noises in the video. this sounds like a rod bearing to me.Need to pull the pan to check rads.

Lifting the valve cover will be good for checking the cam, and followers. Look for any lobes that are noticably smaller then the others, or have bad grooves in it. Not likely the noise, but worth looking at for a general idea of engine condition. If it looks bad up there, and with the rod knock it looks like rebuild time for sure. If all is good on the top end you may get away with just putting bearings in if the crank is not scoured. This is assuming you are looking for a quik/cheap fix for now so you can get a feel for the car and decide what to do long term. Long term I think this car may be a good restoration canidate, then a proper rebuild will be in order.

I see no reason not to work on it, and learn if you are inclined to. It is a straight forward and simple car. Take your time ask plenty of questions, photogragh everything before taking apart, and as you take apart. Also get the Mercedes engine manuel, not haynes, chilton etc but real mercedes .
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Old 08-11-2011, 06:50 PM
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Originally Posted by 47dodge View Post
I see no reason not to work on it, and learn if you are inclined to. It is a straight forward and simple car. Take your time ask plenty of questions, photogragh everything before taking apart, and as you take apart. Also get the Mercedes engine manuel, not haynes, chilton etc but real mercedes .
Yep thats what we are going to do, we are going to start this evening with pulling the VC and checking the clearance and lobes like you suggest.

We called a local mech that is bosch certified and he told us to check the valve clearance and heat shields on the injectors. He said having out of adjustment valves can cause the problem or a bad heat shield. He said if we can't locate the problem he would be happy to give it a look over. As you said we may be able to get the barring replaced as a short term fix...then save for a rebuild. Your right I also need to find a good copy of the factory service manual.

I think were in it for the long haul, but he wants to drive asap...I also told him about what was said here...there is no such thing as a cheap mercedes...my euro was 300$ but boy have I invested a lot of $$$ into keeping it on the street....well worth it though...for a car that will never leave you stranded and can take a curb like no other vehicle

Heres some better resolution pics





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