82 300SD, no power on inclines or hills, people giving my friend the bird. Where or what should he check to figure out why this happened? Is there a connection thats come loose? He replaced a starter and for some reason his turbo kicked in and had alot of power but then it died again. I'm told starter and turbo are unrelated but.....

On another note, my 81 300D had the R12 changed over to R134a and I don't know if I have a leak somewhere or what but I don't get cold air. Air also doesn't blow out of the center vents on the dash......My invoice says there installed a pressure switch, receiver/dryer and a conversion kit. Is there something else they should have replaced or done besides evacuate and recharge the a/c? Summer right around the corner and I need cold a/c here in SoCal. Help! Any good a/c shops here the SoCal area that are reputable (lol) and can check this out? Thanks.

Id check the fuel filter.. poor it out into somthing and see what comes out.

why do you think its the turbo? Pull the intake tubes off and check it out. If its blown up it should be pretty obvious.... Does it still spin? Any noises?

good luck!

As far as the AC goes... take it back to whoever "fixed it" and tell them its not fixed till its blowing cold air.

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-->1971 mercedes 220D; 617 951 engine, 4 speed

The turbo and the started are as related as the glove box interior light and the spare tire. They share the same vehicle, but that's it. The starter only works when you crank the key. Once the car starts and you let go of the key, the starter just sits there until the next time you crank the key. The turbo works after the car has been started. In an '82 300SD the turbo starts spooling up at around 1800 - 2000 RPMs. You'll hear the sound (kind of a low whistle) if you turn your radio off and listen to the engine, specially after the car shifts from 1st gear to second. There are no electrical connections to the turbo. It works with the exhaust gases coming at a certain speed from the engine. Here's a schematic of your engine: http://www.zarnochwf1.com/gallery2/d/611-1/EnfineOM617A.jpg
What this sounds like to me is that the ALDA system might be clogged somewhere. There's a little bolt there called the banjo bolt, and if it gets clogged, your car will lose a lot of power. here's how to check it:
http://dieselgiant.com/mercedesaldaboostsystemservi.htm
If the turbo is indeed not spinning at all, it's because the turbine failed somehow. It's rare that the turbo fails because it's so simple, but it might, maybe if it's not getting oil from the engine or if the seal ring is not tight enough and it's letting too much dirt inside, or if an unfortunate mouse made it its home and kapow! ... Crap happens. If that's the case, turbos are not serviceable (by the home DIY mechanic at least) and you'd have to replace it. But I'd check the ALDA first, it's the most obvious reason (to me) why that would happen so suddenly. Hope this helps some.
Good luck!

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

There is also a small plastic line that runs from somewhere back by the back of the valve cover toward the passenger side of the engine. I believe it goes to the alda valve. If it gets cracked or displaced the fuel will not be increased when your turbo kicks in and it will make no power.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

^ Yes, that's part of the ALDA set up covered in the diesel giant procedure.
I would check there first.

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83 SD

84 CD

I suggest someone new to diesels & turbos not just jump in to the alda & start adjusting. That is a good way to have the alda messed up. Since the car was recently working and now it isn't, start reading then based on research, to some testing.

Start by replacing the fuel filters. That has cured many "no power ills" and won't mess anything up. (Be sure to fill the spin on filter before install.) Make sure the boost line is clear. (lots of info) Pull the tube off the turbo & note that the turbo spins freely & smoothly and doesn't have a lot of play. (again, lots of info) Install a boost gauge and go for a drive. Note that you won't have any boost without the engine under load ie reving in a driveway.

post back with more questions after you've tested & read. Archives are a good thing.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

The above (diesel giant) link explains how to do just that, clean the lines, nothing more, you would know that if you researched that link. Not only is the adjusting procedure not included, he actually suggests against any adjustment. Of course, had you read it, you'd know that. Not sure how you got adjust the ALDA in my previous post.
Starting with a clean system is a good idea, as is changing the fuel filters.
Checking for a free spinning turbo is a good idea too.

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83 SD

84 CD

Agreed.

This is the problem.

Or, it could be as simple as one of these lines disengaged. Either way, the DG procedure should be carefully followed on a vehicle of unknown pedigree.

I am thinking that when he Jacked up the Car to change the Starter in unblocked something due to the angle of the Car as at when jacked up. Back level and after driving awhile it blocked up again.

To me the first suspect would be something in the Fuel Tank. But, the other stuff everyone else suggested should also be checked or cleaned.

With a at least 1/2 full Fuel Tank try swapping the fuel outlet (Cigar) Hose with the Fuel inlet Hose. This will bypass the Fuel Tank Screen and draw Fuel from higher in the Fuel Tank. However, if that works I would not drive around like that for long as you would run out of Fuel way sooner than would show as empty on your Gauge.

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84 300D, 82 Volvo 244Gl Diesel

Yep, actually this sounds very likely, if he's messing around with the engine, might have accidentally plugged in a disconnected line, or moved it around or something. Does sound to me like the ALDA is not functioning properly at any rate.

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

Twice when on a trip, my SD would slow dramatically on hills. Both times it was fuel filters. The boost line was cleaned before the second event. The fuel lines at the tank had been leaking and were replaced. The screen was replaced and the tank checked for cleanliness. The replaced screen didn't really need it but since the tank was drained, the accessible parts were replaced. Filters and boost line are more frequent maintenance items on my list.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Thanks all for the informative responses. Friend will start with the fuel filters and work from there.

Also, check the turbo switch over valve...and never mess with the turbo with the engine running.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K