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#1
02-18-2014, 01:56 AM
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mercedes benz 300d turbo diesel not enough power
i got my Mercedes 1991 300D, any time i stop on the red light and want to drive again, car dos not have enough power, it is taking around 5 second to get back to normal. any body know what i have to do? it is my first Mercedes Diesel and i do not have any experience.
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#2
02-18-2014, 02:41 AM
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Change both fuel filters, the engine is most likely starving for fuel. Also change your air filter.
Report back
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2001 G500 (45k and counting) 1991 350SDL (211 and counting) 1998 C43 (50k) Silver/Black (sold) 1995 E500 (40k and counting) Pearl Black/Anthracite (sold) 1991 300CE (50k and counting) Silver/Black Cloth (sold) 1983 300D - 79k Classic White/Blue Leather 2002 E55 Obsidian Black/Black 1996 S600 Coupe - 75k Black/Black (traded) 1984 300D -145k (sold) Silver Blue Metallic/ Blue Leather 1985 300D - 87k (sold) Manganese Brown/ Palomino Leather 2005 E55, 50k(sold) Flint Gray/Black
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#3
02-18-2014, 05:09 AM
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Quote:
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#4
02-18-2014, 07:12 AM
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Yes to both of the above posts.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#5
02-18-2014, 07:51 AM
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#6
02-18-2014, 09:34 AM
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Or the dreaded P2 flap.
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#7
02-18-2014, 10:08 AM
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The car is old. Like any older car It usually pays to go over everything. Then you have a new baseline.
Timing chain items should be carefully checked. Not because they are the cause of your current issue. But if any form of extreme wear is there and the chain lets go it will probably kill the engine. As with any type fuelling issue on diesels you almost always start by changing the fuel filters. Not that they will be the problem. You just have to absolutely be sure they are not the problem.
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#8
02-18-2014, 11:19 AM
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Do the other stuff to the Fuel System mentioned previously.
Check the Fuel Tank Screen The Fuel Supply/Lift Pumps don't seem to last as long like the 30 Plus year ones on the 617 type Engines. Same with the Fuel Pressure Relief/Overflow Valve. Are the Throttle Linkages and Cables moving the Throttle Arm as the are suppsed to. I have a different Engine but My Throttle linkages were extremely sloppy and I had poor exceleration off the line. When the Car got going and after that it was normal.
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84 300D, 82 Volvo 244Gl Diesel
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#9
02-20-2014, 03:25 PM
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do a valve adjustment also. after all the things listed, then maybe maybe install a manual boost controller but don't go over 11psi boost and don't floor it for more than about 20 seconds.
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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap) new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped
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#10
02-20-2014, 05:40 PM
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A '91 should have hydraulic lifters. No adjustments needed.
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#11
02-20-2014, 06:44 PM
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Quote:
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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap) new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped
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#12
02-20-2014, 07:03 PM
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More data needed
Quote:
Did this begin shortly after filling your fuel tank? When is the last time the fuel/air filters where changed? Are there any leaks in the fuel system? Has this car run vegetable or used engine oil? Have you noted: * A longer delay for the engine to shutdown? * A change in transmission shifting? * A change in climate control function? * A hiss or suck when the fuel fill cap is opened? .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#13
02-20-2014, 07:23 PM
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these may help
Your car is IMO more sensitive to vacuum leaks due to air intake flap/transducer system.
W124 93 300D 2.5 Boost Problems (I too am stumped!) disabled EGR, now what? Vacuum leaks usually have a direct negative impact on transmission shift performance. http://www.peachparts.com/Wikka/TransVacTune ########################### Diesel owners need to know fuel data Diesel owners need to know fuel data Warning ALL Diesel Owners http://www.peachparts.com/shopforum/diesel-discussion/309367-warning-all-diesel-owners.html#post2841158 Bad smelling fuel, what to do bad smelling fuel, Gag, gasp, choke Performing a Fuel Purge on a Mercedes Turbodiesel http://www.youtube.com/watch?v=cEP6GIwrEUc What is this valve and why is it dripping diesel? What is this valve and why is it dripping diesel? Fuel tank vent pictures + location 93 300D 2.5L Turbodiesel Power Loss What happens when a tank vent gets clogged. What happens when a tank vent gets clogged. Imploded fuel tank - so sad! Imploded fuel tank - so sad! Why do I have vacuum in my diesel tank.....................? Why do I have vacuum in my diesel tank.....................? MB diesel filtration, how it works. http://www.peachparts.com/shopforum/diesel-discussion/141211-mb-diesel-filtration-how-works.html#post1055075 fuel filter change http://www.peachparts.com/shopforum/diesel-discussion/112664-fuel-filter-change-post824006.html Diesel filters, no tank strainers please. http://www.peachparts.com/shopforum/diesel-discussion/140349-diesel-filters-no-tank-strainers-please-post1046422.html?posted=1 Algae/Fungus fixation... Algae/Fungus fixation... Biobor, what is it, why do I need it??? http://www.peachparts.com/shopforum/diesel-discussion/105304-biobor-what-why-do-i-need.html#post723857 Filters, Fungus, Biocide, etc. http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html Algae Clogged Filter Pic StarTron WORKS ! Algae Clogged Filter Pic StarTron WORKS ! 300SD Fuel Filter Replacement Instructions 300SD Fuel Filter Replacement Instructions fuel tank filter removal 82' 300 turbo diesel fuel tank filter removal 82' 300 turbo diesel Fuel tank screen Tank Screen Changing the Fuel Tank Strainer on a Mercedes Diesel http://www.youtube.com/watch?v=WrtBuQS8oXg HOW-TO: Replacing fuel tank strainer in W124/W210 estate (Diesel) http://www.mbclub.co.uk/forums/engine/55663-how-replacing-fuel-tank-strainer-w124-w210-estate-diesel-3.html Check out this fuel pickup screen Check out this fuel pickup screen adding more .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ Last edited by whunter; 02-20-2014 at 07:43 PM.
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