R Leo

That is great thanks for the leads on the other threads. The motor runs so well just mystifies me how it has hesitations from the stand still then no problems once it gets moving. Will keep you posted by the way. Thanks

Just thought of something.... is your car starting out in first or second gear?

You can test by putting your car in L (or whatever the lowest is). FYI, the car will not shift till max RPM is reached in first gear when in L.

John
'79 300SD

you know I will check. What if it is in 2nd get should I start out in the lowest then shift to drive once it gets out? I have tried the gear below "D" and that did not do anything.

As a temporary provision (I've been doing it a year ) dump it in L when your starting out then work your way up to D. Putting the car in S won't force the tranny into first, L will.

I can't answer as to why your car doesn't start in first as we have vastly different trannies. On my car there is the kickdown solenoid, which kicks the transmission down a gear when the kickdown switch on the floor is depressed. The tranny by default won't go down into first when stopped to prevent having to stand on the brake at a light, but will downshift to first as soon as you remove your foot from the brake. I am pretty sure your car does not have that system, and I think its controlled by a cable, not 100% sure.

If you find that to be the problem do a search, lots of people have that problem, and there should be lots of good info for you out there!

G'luck!

John
'79 300SD (2)

Tymbrymi

Definately going to give that a shot. The car is actually getting the oil changed and filters checked. Having somebody look at the Banjo Bolts and ALDO. Will keep you posted to what happens as it develops. All very interesting but fun. Thanks

84 benz,

I also have a 1984 300d with California emissions and it has had the same problem, slow from 0-20, ok thr rest of the way.

To save you some work, I have done the following--

Valve adjustment
Alda tweak
All new injectors

And it still does the same thing yours does.

FWIW it hasn't gotten worse in the 61,000 miles I have owned it, but I still am interested in both our cars running right-

I have not had time to have the injector pump looked at, and my tech thinks there could be a low-speed enrichment issue. --Does anybody out there familiar with Bosch pumps want to weigh in on this?



That may be the next place to look, but a compression/leakdown test should be done first to exonerate the valve train or piston rings.

Hope this helps--

__________________
Nate Stanley
(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320

Hello Nate Stanley,

Yes sounds identical to what I am dealing with. Have noticed however, when the engine gets warmer and running for a extended period of time it does better out of the hole.

The car originally came from San Jose, I know that because I have the original window sticker on it. Would have to think the California emissions are on mine too. I know you are in the same area, wondering if striping the california emissions would help.

If I find out anything other than stripping the CA emissions I will let you know.

84,
Yes, mine does a little better off the line when it is warm, but the lope at idle never goes away, and it is not the best-running Turbodiesel I have driven. I once tried a 300CD that chirped the tires from 1-2 with NO effort. Pulled like a train, but I passed on it because it had a salvage title. Should have bought it.


I don't think emissions are the problem, since I tried sticking a BB in the vacuum line to the EGR valve, and there was no change.

If the EGR valve is stuck open, that may be another issue, I just haven't had time to look into it.

I'd still like to hear from anyone out there that really knows Bosch injector pumps!!

__________________
Nate Stanley
(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320

Nate,

You know this 300D will chirp the tires from 1 to 2 it's just that initial out of the hole. Will do what you were suggesting also going to try the other advise all the minor ones at least. Let's stay in touch would be glad to share with you anything I find that helps this matter.

I forgot to mention that you should definitely have the timing checked. If its way off it can cause all sorts of problems. And please, please do the timing, valve adjustment, and new filters before you start messing with the alda or otherwise trying to "adjust" things. You need to start with a good baseline before you can diagnose further problems.

Lastly, check your throttle linkages very carefully. They could cause your problem if something is bent, out of adjustment, or the rubber isolator on the firewall is worn. There is a lot of adjustment possible in those linkages, so I would have someone experienced in Mercedes diesels check it.

Lastly, many people in the past have confirmed that disconnecting the EGR on California models has no affect on performance whatsoever. I know it does make non-Cali cars peppier, put for some reason it doesn't do anything for Cali cars. And since I own one, I can confirm this.

GregS
'84 300D
'90 300CE

Next to the subject of oil, this topic is probably the most widely discussed here in the diesel forum. There are a myriad posts on this topic, many of them very cogent checklists for getting your diesel up and humming. Briefly, the items to check are:

* Check throttle linkage
* Change both fuel filters
* Adjust valves
* Clean banjo fitting and switchover valve
* Adjust wastegate setting on turbo
* Adjust ALDA fuel enrichment

The last two are more involved than the previous items, but well worth the effort. Happy motoring...

__________________
Matt
------
1995 E300 Diesel (Die Blau Frau)

Greg and Zoonhollis

Thanks for the information this should be very helpful. Need to find a local mechanic that is experienced in this area. Feel that would be my best bet with the knowledge you all have helped me out with. At least I will sounds somewhat knowledgeable. Thanks again.

I had the same symptoms on my 1984---my egr was sticking open----I do some stuff myself, but I wasn't able to tell that my egr was sticking open. Are you getting any smoke at all along with the lack of power?

__________________
RT


1984 300D---Sold
1995 E420 - 106K - Brilliant Silver Metallic/Orion Gray --- Sold
1984 300SD - 151K Manganese Brown Metallic/Mostly Black --- Sold
1982 240D - 79K - Manila Beige/Palomino---Sold

You can easily test the ERG without a Mityvac (easier though if you have one) by using some vac. line and connecting the EGR temporarily to something coming off the brake booster and you should be able to see the valve move through the slot in the side

__________________
'84 300SD veg-oil bliss
'83 300SD veg-oil beater

Hello 1stimer,

Just getting the regular smoke that occurs, or I at least think it is normal for a diesel. REally have not had anytime to do any of the minor tasks that have been advised to me. Once I do I will let you know what I learn. Keep me posted as to what you find out. Thanks.