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  #31  
Old 03-04-2010, 10:24 PM
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Quote:
Originally Posted by cantabridgian View Post
So, for all interested in exactly how much WVO was run through this engine - answer is, very little. We added the two-tank system this past fall, and I doubt it ran more than 3,000 miles on veg - it might have been closer to 2,000 miles. Our '85 300CD runs well on veg, probably at least 30k miles on veg with that car. Anyway, all thoughts on rings, gaskets failure, etc., are much appreciated. Compression is way down, it's almost un-drivable, and so far leakdown test is inconclusive. I should have more information from the mechanic tomorrow. Thanks to those cheering us on to repair it! We'll make a decision shortly. If we don't repair, we will offer it to this forum first. Body is immaculate, chassis perfect, all electricals, vacuum system, vacuum locks, etc., work well. Many new parts. We'll decide soon!! Many thanks again for your input...
If your losing massive amounts of oil like that without massive amounts of smoke from the exhaust, I would first check the oil cooler lines.
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  #32  
Old 03-04-2010, 10:35 PM
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Quote:
Originally Posted by RichC View Post
I just dont get it, I have several thousand of miles on veggie and no ring coking, low compression issues.

Were the injectors bad in the first place, and maybe the rings had been coking up from the diesel it was run on for 200,000 instead of all of it happening in the 20,000 on veggie ?

A bad injector causes coking of the rings despite what fuel your using.

Do you have any information that is first hand ?
Instead of a guy who brought their car into your buddies shop ?

I have heard lots of shop talk get pretty far fetched, like fish stories around a camp fire.
The injectors looked aweful, veggy oil gunk all in them.

I was at the shop when we tore into the motor. So it was first hand, thats why I said I should have taken pictures to show on the forums, but I didn't have my camera with me.

The motor was designed to run on diesel, diesel will not harm a motor.

Im not trying to be a prick, im just telling you what I think from what I have seen in the past......
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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

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  #33  
Old 03-04-2010, 10:46 PM
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Check your oil filter canister top. Some moron over tightened the one I just got breaking off the ear that holds the top down . "fixed " it and when I got the car it showed a little seepage around front but a steady stream down back all it took was a little tightening of the cap.

Damage was already done brand new crate motor trashed !! (it still hurts )
So WVO isnt the only thing killing them.
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86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes
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  #34  
Old 03-04-2010, 11:53 PM
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Quote:
Originally Posted by 79Mercy View Post
The injectors looked aweful, veggy oil gunk all in them.
I was at the shop when we tore into the motor. So it was first hand, thats why I said I should have taken pictures to show on the forums, but I didn't have my camera with me.
The motor was designed to run on diesel, diesel will not harm a motor.
Im not trying to be a prick, im just telling you what I think from what I have seen in the past......
Why do you say it was veggie oil gunk in the injectors, what leads you think that ?

I am trying to reconcile the disparity between my experiences with veggie and what other people say.

Diesel fuel will carbon up the injectors and rings.
If you let a diesel coked injector go long enough it will coke up a ring and score the cylinder walls.

I am not trying to be a prick either.

Every case I have seen has come down to poor maintenance and not the fuel type. But the veggie gets the blame, not the poor maintenance.

If a car runs diesel 200,000 miles and gets low compression reading people blame maintenance.

If the car ever runs veggie they blame the oil, not improper maintenance,
despite the mileage ran on diesel.
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  #35  
Old 03-05-2010, 08:04 AM
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I really can't opine on the diesel vs. WVO debate, 'cept to say, our '85 W123 loves WVO. We bought the '87 300td a little under a year ago. The odo said 195k when we bought it, but it was already "restored", including tons of work. My guess is the previous owner rolled the odo back when he replaced the head on the engine, but I can't prove this. So the diesel engine probably had closer to 250k on it. As we all know, it's just getting broken in! It should have gone much farther. Every mechanic I showed it to advised us to buy the car, it really is in wonderful shape. Except for whatever is causing oil to spray everywhere and very low compression. That just happened last week...the car ran so nicely that after 6-8 months of driving on diesel, we added the second tank for WVO, a couple of solenoids, a controller, etc. And it ran nicely on WVO, which we only activated on long trips. And that brings us to present day. I'm still waiting for the mechanic to return my last call with more info. I am inclined - like many of you say - to spend the money to get her back on the road, but I'm waiting for my mechanic to tell me the full and final list of what's wrong. So far alls he says is, there's no compression whatsoever and he still hasn't tracked down the source of the oil leak. This from a guy who's like an M-B prophet. So I'll wait for him to make his final determination... And - no shots to fire across anyone's body parts - all i can attest to is on-road experience with a successful 2-tank WVO system for our W123. It really, really works, and I'd recommend it for anyone interested in going that way. If you're not interested in going that way - i love the M-B diesels exactly as the Universe built them...enjoy!!
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1987 300TD Black/Palomino 120k on donor engine (thank you CS), 305k on everything else

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  #36  
Old 03-05-2010, 08:44 AM
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got any pictures of the patient? As much as I would like to have a nice wagon (another one joins the circling flock ) I really hope you can get it repaired at a cost you can afford.
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  #37  
Old 03-05-2010, 03:04 PM
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Sudden no compression, that is one to make you think.

Cam ?

Keep us informed.
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  #38  
Old 03-09-2010, 11:58 AM
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for those following: looks like we can get a (slightly) used engine with about 120k miles on it installed for around $3k. This is extreme, but since a wagon in this kind of condition (with a good engine!) would go for between $7k-$8k, and we paid about half that...i can only say, "you get what you pay for" and get this work done. I think the wife will be happy...i hope! I will post with more info about old engine once it's out, details, etc....
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Cantabridgian

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1987 300TD Black/Palomino 120k on donor engine (thank you CS), 305k on everything else

MISSED 1985 300CD Blue/Palomino 250k lovely but had to part with it; now wife has Jetta TDI, you know how it goes
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  #39  
Old 03-09-2010, 12:39 PM
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It's a shame that you need to replace the engine. However, I'm happy that you're going to save it, good ones are hard to find.

Are you replacing the entire engine? If so, see if you can keep the turbo, IP, head, and if the newer design; the vacuum pump. Although it is possible (likely) that there is some oil-related damage to some or all of these, they might be worth rebuilding / repairing and therefore worth selling to someone on the forum.

Injector hard-lines also.
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  #40  
Old 03-09-2010, 03:06 PM
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I would be interested in the engine head.

The motor in my wagon had been replaced with a non wagon one without the
pump for the SLS.

Would be nice to get that system working again.

The shocks I am using just dont feel right.
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  #41  
Old 03-09-2010, 03:59 PM
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He has an '87 Rich, which is the OM603.

The pump for the '87-up is a tandem-pump with the PS pump, not on the head.
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  #42  
Old 03-09-2010, 04:38 PM
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didn't i read where you said the oil leaks started after a recent oil change???? any change you forgot to replace the big o-ring on the filter housing...or maybe installed the new ring on top of the old ring???? or maybe forgot the copper washer on the drain bolt?
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1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
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  #43  
Old 03-09-2010, 09:39 PM
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Yeah, sounds like maybe timing problems or head problems like rich said. Valves are not closing. Why else would you get no compression what so ever. Even severely damaged by wvo engines have some compression in the cylinders and mostly good compression in all but one -- the one that had the bad injector or glow plug. As opposed to severely damaged by anything else engines for which there can be no accountability.
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  #44  
Old 03-09-2010, 09:39 PM
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BTW, i had an 85 and it loved wvo too. Its on the road now.
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  #45  
Old 03-10-2010, 01:48 AM
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Quote:
Originally Posted by odie View Post
didn't i read where you said the oil leaks started after a recent oil change???? any change you forgot to replace the big o-ring on the filter housing...or maybe installed the new ring on top of the old ring???? or maybe forgot the copper washer on the drain bolt?
He said he drove it six quarts low pulled over to let the engine cool

My new purchase was driven low on oil removed the oil filter and found a handful of rod and main bearings and probably parts of ground up block.
Pull your filter and check for metal also check if your o ring is there.
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Experience : what you receive 3 seconds after you really needed it !!




86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes
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