Question about 1992 Mercedes-Benz 190

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My 1992 mercedes backs fire alot and have trouble starting.

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First thing to do is a major tune up.. If it has a lot of miles check or have the coil check

Posted on Jul 21, 2009

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MB 1992 W124, engine turns will not always start or if starts will stop.


If you have an external fuel filter, good idea to replace and then take for test drive. If problem still present, might want to cheek fuel pressure.
There are a few other components that could cause your issue. A fuel pump that may be going bad or there is lots of dirt inside fuel tank. Another problem could be a bad fuel pressure regulator.
Do you have any codes in your engine control module ?

Jun 22, 2017 | 2002 Mercedes-Benz C-Class

1 Answer

I need a diagram for the firing order on a 1992 mercedez 400E, where can i get one?


For 1992 Mercedes Benz 400E (124 Chassis) 4.2 liter DOHC V-8 (119) check this...

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Hope helps (remember comment and rated this).

Jul 22, 2010 | 1992 Mercedes-Benz Mercedes Benz 400 Class

1 Answer

Can a plug foul out while running? on a 190 E mercedes, it was running rich to begin with and it began missing, i stepped on the gas and actually redlined. then the car just shut off? i think that it might...


Whovever did the head repplacement should have replaced the chain. If they did not then you probably lost teeth on the gears and chain went wild in there. Back firing can mean alot of things and can definatly support what you are saying.

If you redlined the vehicle any number of things can happen with no load to slow the engine down.

Jul 16, 2010 | 1992 Mercedes-Benz 190

1 Answer

1992 190e mercedes won't start? never had any trouble with it b4. its got spark. and i can here the fuel pump. and there is fuel getting to the fuel injector distibuatior.but not cuming out of the fuel...


it sounds like your fuel distributer is clogged. Replace your fuel filter. first you can try to bleed your system. take 12mm. wrech and loosen up you lines(one at a time) and crank your engine over(with a battery charger)and force your fuel bubbles out of the lines. while the engine is cranking and the line is loose knock on the line with the wrench and you will probably see a whole buch of rust poor out of the loose fitting. do thius repeatedly untill engine fires off-then with engine running loosen up your lines and repeat if any lines loosen up and there is no idle change that means that cylender is not firing and your injecter is not working. These mechanical style injecter's take alot of pressure to open the poppet valve to spray fuel.hope I have been helpful

Jun 18, 2009 | 1993 Mercedes-Benz 190

1 Answer

I need a 1992 mercedes 400 se sparkplug wiring diagram


most older mercedes benz firing orders are written on valve cover. I beleive it will tell you on one of the rear intake manifold runners. the way a benz engine cylinders are marked they read-1 2 3 4 on the l(passanger side) and 5 6 7 8 on the r(drivers side) unstead of 1 3 5 7 and 2 4 6 8. maybe this will help you good luck getting the plug sires back into the plastic troughs.

Apr 12, 2009 | 1992 Mercedes-Benz Mercedes Benz S Class

2 Answers

Car will not start


hi,wet of oil? if oil are present in the spark plug you my replaced valve seal first,if not corrected,you my remove you cylinder head for proper diagnose.

Feb 15, 2009 | 1992 Mercedes-Benz E-Class

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