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Old 04-04-2006, 10:08 PM
The Diesel Noob
Join Date: Mar 2005
Posts: 77
300D "Doggy" Start Off - Any Suggestions?

Hello, i have a new 300D i purchased a few weeks ago in Florida.

I have a quick question, when it starts off its "doggy" at getting going, But when its going and i accelerate its fine. Any suggestions on this?

Also a rear CV boot is cracked, it was cracked when we were down there, we used a car dolly to get it back to Green Bay Wisconsin, would it be better to just buy a set of new CV axles or to replace the one boot?

Also is there a do it yourself page for the boots? I looked but couldn't find one.


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Old 04-04-2006, 10:12 PM
Registered User
Join Date: Jul 2004
Location: Toronto, ON (Canada)
Posts: 135
My 91 300D 2.5T is slow after first starting when cold. Is that all you mean? It's quite slow for the first few minutes...
1991 MB 300D 2.5 Turbo (207000km) (now gone)
1993 Audi 100 CS Quattro (300000km)
1999 VW Jetta TDI (290000km)
2002 Audi A6 3.0 Quattro (150000km)
2005 MB E320 CDI (34000km)
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Old 04-04-2006, 10:36 PM
Join Date: Jul 2005
Location: Rocky Mount, NC
Posts: 119
If it's slow when warm, try changing the two fuel filters. If it's slow when cold.....well, welcome to the world of MB diesels.

Good luck,
1983 300SD "Helga"
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Old 04-05-2006, 12:02 AM
The Diesel Noob
Join Date: Mar 2005
Posts: 77
I will try that, it was sitting for a few months, so i think i will run some injector cleaner thru the next tank too.


Last edited by l3ushwig; 04-05-2006 at 12:09 AM.
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Old 04-05-2006, 12:21 AM
mbzkid's Avatar
Registered User
Join Date: Jul 2004
Posts: 360
Do you know if the transmission is shifting properly?

The engine could be low on power, or the trans could be shifting early.
1976 BMW 2002- 100k
1995 BMW 325i 175k
1984 Mercedes Benz 300D Turbo Diesel- 270,000 mi

1981 Mercedes Benz 240D- Estimated 300,000+ mi Returned to the earth
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Old 04-05-2006, 10:21 AM
Registered User
Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
I always attribited the lazy engine when cold was just the thick oil. Until it warms and gets flowing a little easier the internal drag seems very high. You could perhaps lessen the symptom by going to a synthetic oil or perhaps semi synthetic oil. Better overall milage as well I understand. Might even make up for the higher initial cost. My 240ds exibit the same tendency but even worst but both are on regular oil as well. Perhaps the only cars I own that I let warm up before counting on much of any performance at all. Never would contemplate for example just starting one cold and entering a freeway for example or I would expect to be on shoulder letting engine warm a little before being able to go fast. With engine stone cold and facing a hill I would consider the word doggy to be an understatement. The five cylinder non turbos are perhaps a little better but not much in my opinion. You sort of get conditioned to it.
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