SVO/WVO

123 126 diesel vacuum leak diagnosis

My 1985 300TD has a vacuum leak. The engine won't shut down without using the manual stop and the door locks don't work. The brakes and transmission are working fine. Does the fact that the brakes and transmission are working while the shutdown and doors are not, help in locating the leak? Or, do I follow all the usual steps (as described in Kent's vacuum source leak detection manual)? [by the way, is it possible to search the forums?]

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Body and Interior Specific Aid

Taxonomy upgrade extras

SVO/WVO

Chassis Model Number

W123

Upgrading Alternator Amps for DTC

Greetings from Columbus, Ohio. My 1982 Mercedes 300D Turbo Diesel has a glorious Mercedessource DTC system! Only problem I am experiencing is that the alternator can not reliably keep up with the electrical demands. What ampere level would be a good upgrade (150 amp to 300 amp?) and do you have any specific brand/model of alternator you recommend? Trying to eliminate the risk of producing too many amperes as well (if that is even a concern). Many thanks and keep on Greasing! --- Chris Konik

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SVO Fuel Conversion Specific Aid

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SVO/WVO
Questions and Answers

Chassis Model Number

W123

300D 617.912 engine will not start

I have a two tank SVO system on my Merc with 310,000 Kms on the clock - 100,000 Kms are mine most on SVO. I have never been stumped, held up or broken down before. The engine starts and shuts down on diesel. The problem- I was away for a week and my Merc sat idle. When I came back the Merc started hesitantly (low battery). I drove about 20 Kms and the next day she would not start for love nor money; totally dead. Not even a kick from one cyllinder. I checked; Lift pump ok, replaced with electric lift pump & still no go. IP moving fuel when lines cracked. Cam timing marks and harmonic balancer marks line up ok. Valve clearance not binding, Glow plugs working, has the Mercedessource fast plugs installed. Best thing ever. The injectors were re-newed 8 months ago,

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Diesel Engine Specific Aid

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Tips
SVO/WVO

Chassis Model Number

W123

honest diesel mechanic wanted Seattle

Hello, I am new to this forum, I have a 1993 MB diesel 350 straight six in my truck and would like contact information for a good mechanic here in the Seattle area. I want a mechanic that does not create problems, is very knowledgeable to all mercedes diesels, and does not mind working with and trouble shooting vehicles with SVO conversions. Evidently my truck is semi rare here in the states so said mechanic must be comfortable working on new things. My truck is a mid 90's G-wagen. Your referrences are appreciated. -Krashappy

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SVO/WVO
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Body and Interior Specific Aid

Replace/Rebuild Inj Pump?

I've recently replaced the nozzles with your kit for my 300CD non turbo. The car ran great for two days, then it quit in a big way. I've replaced the filters,lift pump, bled the air out of the system and can now only get her started with the fast idle turned up. Lots of smoke, I mean LOTS of smoke and when the temp starts to come up and I turn the idle down she dies. She'll restart with the idle turned back up, and still all the smoke. I'm getting ready to pull the Injection Pump to have it gone through, or is there something that I'm missing?

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Diesel Engine Specific Aid

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SVO/WVO

Chassis Model Number

W123

87' 300TD NO A/C

Hello Everyone, I just bought a 87' 300TD. The a/c is not working. I'm a ASE certified master tech but I have no experience with Mercedes. The climate control seems to be working OK. THe fan speed changes with the temp settings, the air blows from the correct ducts when swithched which usually indicates no vacuum leaks or sevo problems. But the A/C compressor clutch does not engage. I checked the high and low pressure switches on the high side a/c line near the sight glass and they are not getting any power to them so jumping them will not help. I've read that the a/c control cutout relay could be bad, but I don't like throwing new parts at a problem without verifying with a test 1st. So can you tell me how to properly diagnos this ?? Thanks in advance for any help. Art D

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Body and Interior Specific Aid

Taxonomy upgrade extras

SVO/WVO
Questions and Answers

Chassis Model Number

W124

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