Hi there guys, i`m relaying on your expertise to resolve a puzzle with my car, after replacing few vacuum hoses and getting some vacuum leakings in the engine area the car begon to smoke a lot (black, really dark black like a russian tank) when trapping on gas pedal, take a eternity to get on revs even with gas pedal fully pressed and just after 2500 rpm begin to accelerate like before but not before covering the whole street in a black cloud and using a fuel tank in about 200 miles, it even continuos smoking after the 2500 rpm, i can clearly see it from the mirrors, any ideas what can be happenning? thanks for any help.

EGR valve, or the alda is hooked up wrong... Did you hook up the air regulator near the filter up right???

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Where can i find the ALDA and the EGR ?

EGRis right before the bend in the air intake that goes over the top of the engine on the passenger side.
ALDA is unlikely, but it's the square thing with the cylinder shaped top on top of the injection pump...
Although it sounds like that air regulator box under the air filter container is more likely to be at fault...

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Thanks for you reply, begin to make sense, i took out the original air filter a couple of months ago and replaced it for a generic type K&N filter fitted on the original plastic pipe going to the regulator box, the fit wasn`t air tight for the first couple of weeks, could that be the culprit? Is there any way to check inside the regulator box?

I dont' know about checking the inside. I know that there's an air cutoff flap in there, that if there isn't enough vaccum to open or close, whichever the case may be, it would cause the symptoms you are talking about....

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

I`m gonna check it out right away, i`ll let you know, thanks.

Take the pipe off that goes into the fresh air inlet on the turbo... If it stops smoking, and runs decently, you've isolated your problem...

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

ok, let me try again.

You are a genius, i`ll vote for you to work by nasa, you are 100% right, just took a round around the corner w/o the pipe at the end of the box and voila, problem solved, unfortunately i don`t think that running w/o letting the aire get filtrate is gonna do any good to the engine, so the next question is, how can i resolve the problem, which is the controller to this cutoff flap? is there any way to keep this flap open all the time or can this damage the engine in some way?, thanks for your help

The box works like a choke to help you start it in cold weather.... Did you do any vaccum line repair in that area?? your vac lines could be shot if not, or they could be hooked up backwards if you did some work there...
I'm sure you could drive a wedge in there to hold the flap open if you wanted to, or get a mod that runs a pipe directly from the filter to the turbo...
Ditch the K and N filter... It won't filter out the really fine particulates, and that can bugger your engine up big time.... Go get a dealership paper filter...

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Thanks for all your help sir, i`m gonna try to get rid of the flap, i do live in south Fla anyway, dont need no choke, thanks for your advise about the k&N filter, i was thinking it was superior in quality to the original mercedes filter, i will replace it with the original one again. it`s a pleasure to have you around.

not a problem... You may be able to take to top off the box, and lift the flap off.. If not, hammer and chisel works well...

__________________
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Okay, first of all, the best fix would be to ditch the K&N style filter, and restore the original filter which was both a better filter, and a more free-flow filter. Also drew in cooler air which is better for the engine, mileage, and power.

Second, the flap in the box you're talking about, a choke? REALLY? On a diesel?
NOT EVEN CLOSE.

The flap is spring-loaded, is an air-flow meter. It is there primarily for emissions controls, can be eliminated if you wish, but doesn't impede airflow enough to be significant in your engine. If there's an airflow problem, unless that flap is damaged and jammed closed, that's not your problem. It probably has more to do with your filter system or something that was sucked in while the filter was not sealing properly.

__________________

Gone to the dark side

- Jeff

Can the auto run properly w/o all the emisions control devices? what are the functions of the (in the sdl vacuum diagram) Y31, Y31/1, 60 and 137b ? which is the device who controls the air regulator box (or air flow meter) under the air filter?