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Mercedes 450sl My 80 merc loads up with black smoke at idil push on the gas more smoke what could be wrong?

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  • Cars & Trucks Master
  • 14,036 Answers

Clogged air filter.worn clogged injector nozzles.replace air filter see what happens.

Posted on Jul 11, 2013

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Posted on Jan 02, 2017

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SOURCE: My 1974 Merces 450sl keeps stalling. What do you

test the fuel pressure.check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter

Posted on Jul 14, 2009

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SOURCE: I need a fuse box diagram for a 1980 Mercedes

El fuse #6 Mercedes 450sl w107 1980

Posted on Mar 12, 2011

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SOURCE: I have an F-350 and it will not accelerate no matter how hard I push on the gas pedal. It is blowing greyish black smoke. What could be wrong?

Try disconnecting both front o2 sensors and see what happens

Posted on Jul 11, 2012

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SOURCE: How do you open the hood of a 1978 Mercedes 450SL?

pull lever on driver side lower left panel. Then push down on hood a little while at same time( inside the mercedes emblem in center of grill) pull up on lever inside grill.

Posted on Aug 31, 2012

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Have a 1976 mercedes 450sl wiring has been chew on car sat. motor runs if you pour gas in it i have 3 wires i cant see were to go one is at the frontunder dist cap two are in the back single wires round...


If it runs when you pour gas into the intake then stops you have a bad fuel pump. In 1976 most used car orators. This being a German auto at that time... Maybe had the early fuel injection using the lamda (sp?) Mechanical system... If it does then you need a mechanic with experience on mechanical fuel injection.

Oct 23, 2014 | Mercedes-Benz Cars & Trucks

1 Answer

Twin turbo 80 horse power deutz Diesel engine blows black smoke under load


Diesel engines smoke when under a heavy load. Unlike a gas engines, a diesel engine uses fuel that is more like an oil.Smoking is a good indication the fuel is not completly burning because of loaded engine spee. White smoke indicates the fuel is not ignitingefficiently. Truck, boats, tanks abd anything else using diesel fuel will smoke when it gets more fuel than it can use.. Easing up on the throttle will lessen the smoke but not eliminate.. Of coarse if the demand is lessened by applying less loadyhe fuel consumption drops.Not to worry as long as the smoke doesn't attract the EPA.

Sep 15, 2014 | Cars & Trucks

1 Answer

My 124 260e A/T merc benz starts fine and accelerates fine and runs fine for the first 4-5 minutes. After which, no matter how I press the accelerator pedal, there's just no speed/throttle. Hence


black smoke is flooding( uncontrolled injector operation
run the fault codes to determine the problem area ( ECM , fuel pressure , faulty injector control, MAF/VAF sensors or failed heated oxygen sensors

Aug 01, 2017 | 1988 Mercedes-Benz 190

1 Answer

How do you open the hood of a 1978 Mercedes 450SL?


pull lever on driver side lower left panel. Then push down on hood a little while at same time( inside the mercedes emblem in center of grill) pull up on lever inside grill.

Jan 18, 2012 | 1977 Mercedes-Benz 450 SLC

3 Answers

1992 Mercedes 500 sel trany sliping


Probably a modulator, however check that the "bowden" cable is properly adjusted (this is the cable that does the "kickdown" and also goes to a vacum /valve.It is simple to adjust, basically with the engine turned OFF, check that the 2 pointers (like arrows) align, (one is on the cable). Being a merc it pays to have the tranny properly serviced, and its filter changed at least every 2 years though merc says 60,000k's. And the one thing that will kill a merc transmission is the WRONG oil, it has to be according to the spec sheet which is in your user manual.(lots of tranny shops use anything!)
Also check the dipstick for discolouration/and or burnt smell.

Aug 06, 2009 | 1992 Mercedes-Benz Mercedes Benz 400 Class

1 Answer

My 1974 Merces 450sl keeps stalling. What do you think?


test the fuel pressure.check the vacuum lines,and the vacuum advance,test the spark,and do a proper tune up including the fuel filter

Jul 14, 2009 | Mercedes-Benz SL-Class Cars & Trucks

1 Answer

Removal of brake booster from a 1979 Mercedes 450SL


Remove under dash panels,carpet & move relays aside.It's tight in there. Watch spacers on piston bolt to brake pedal.

Nov 09, 2008 | 1987 Mercedes-Benz Mercedes Benz 400 Class

1 Answer

94 buick regal grande sport


You could possibly have a blown head gasket. Is there an awful amount of white smoke coming out of the tailpipe? If so, that's likely to be your problem.

Sep 04, 2008 | 1994 Buick Regal Gran Sport

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