Location: originally:West Germany, now reside Central Florida
Posts: 167
Quote:
Originally Posted by Imikeee
Hi Masters!
I am a hungarian boy..I have a big big problem!
My car 1997 S 300 Turbodiesel, 606.960, 177psi, 24 valve!
Problem: i go the way and goes away suddenly the turbo pressure! Turbo pressure nothing..! From one of the moments onto the other one!
BUT, I halt the engine then wait a moment! Then i restart the engine will be again turbo pressure!
what may be the trouble?
When was the last service performed/ completed on your 300 Turbo Diesel? Would suggest a service of your fuel/Hydro filter units. Also, recheck your belts for your turbo unit sheave. Even though the turbo assy. may be the first item many shops will glare at, we have noted that a service issue is the usual issue that will correct this area of opportunity.
Let us know your findings.... filters have been known to collapse in this plant.
Regards, Dietrich
__________________ retired 32+ years: Mercedes Benz Technician
Sinndelfingen Facility Ein gut aufrechterhaltener Mercedes wird ebenso ruhig laufen wie eine Nähmaschine viele Jahre lang!
When was the last service performed/ completed on your 300 Turbo Diesel? Would suggest a service of your fuel/Hydro filter units. Also, recheck your belts for your turbo unit sheave. Even though the turbo assy. may be the first item many shops will glare at, we have noted that a service issue is the usual issue that will correct this area of opportunity.
Let us know your findings.... filters have been known to collapse in this plant.
Regards, Dietrich
Thank you for help..
Last service is after 6.000 km! I changed oil, fuel filter, and etc. Fuel filter name MAHLE! When...What is filter change? where is filter?
Location: originally:West Germany, now reside Central Florida
Posts: 167
Referring to the fuel filters and also suggest strongly to use the OEM fuel filter(s) on the Turbo. The loss of suction due to filter collapse can cause the description as you describe as well as the gate or a variety of other areas of opportunity. Make sure to bleed the fuel supply of air (lower small bleeder of fuel canister for filter). Any residual will work it's way out during drive.
I always had a passion for the Mercedes diesel power plant and really enjoy the sound of those cylinders. That diesel is ready to supply torque , the way only a diesel can deliver. My old 83 300SD is still in my storage and will be there until I leave this earth. LOL, May be five cylinders, but she has always been reliable, ready and willing! Fantastic machine.
I am putting together a diesel for our neighbors 72 CJ-5 Jeep. He is modifying his Jeep and will have a Mercedes diesel under the hood. What a machine that will be, to see and drive.... LOL WOW!
I have the same problem with my 1992 300 SD, my mechanic told me that it is the turbo...regardless he said at certain time the turbo needs to be change. For my case it happens to be because the previous owners has been using a veggie oil...and for some reason he said it affected the engine...
I would say get another turbo...
__________________
w140, 300 SD 1992 white
w126, 300 SDL 1987 brown/goldish
Honda civic EX 2000, Lowered 2.5 inch, 18"
i am not an expert on the SDL, but from my experience with after market turbo systems, what you re describing sounds like the waste gate is not closing once it has opened. or possibly the BOV (blow off valve) is opening and not closing fast enough due to spring fatigue or diaphrame cracks.
__________________
Mercedes-Benz, W140 S class 300SE
Location: originally:West Germany, now reside Central Florida
Posts: 167
300 Turbo Diesel options.... the beat goes on!
Quote:
Originally Posted by bayhas
i am not an expert on the SDL, but from my experience with after market turbo systems, what you re describing sounds like the waste gate is not closing once it has opened. or possibly the BOV (blow off valve) is opening and not closing fast enough due to spring fatigue or diaphrame cracks.
You've got a handle on it Bayhas, this is the next avenue to explore and of course, this could be more expensive of the diagnostic efforts to correct. Sometimes it is as easy as a simple spring or other small part.... and sometimes just getting into the Turbo Charger can expose other areas of opportunity.... it is dependent on the amount of and type of use the unit has be subjected to and how many years?
Has the Turbo pressure switch been verified as operational.... this has caused us intermittent issue in the past.... the switch #54-074 a(performance products.com) corrected same.
As was mentioned in a previous PM, the gate cycling position properly was discussed in length with investigation and freeing same. Also, seal plate and the list goes on..... are suggested to be explored? Our 300TD experienced a an issue regarding the diaphragm and seal plate, both were replaced and other components upgraded to restore the Turbo function on another inline five cylinder 300TD....
Keep one thing in mind.... "turbo" the name refers to "combining form, compressing...as in operated by a turbine and/or turbines in larger turbo units. This unit is responsible for compressing and forcing a larger volume of air into the power plant... therefor it is essential to maintain a sealed environment for proper operation. This is what these members are eluding too, and as our Benz age seals, diaphragms and other items deteriorate.
S 300 TD 606.961 Turbo Problem! HELP 
Linear Mode
