merc 500 sec runs/ getting some fuel but not all fuel


Asked by Oct 29, 2015 at 03:53 AM about the 1985 Mercedes-Benz 500-Class 500SEC Coupe

Question type: Maintenance & Repair

car starts but sounds like it is only running on 2 0r 3 cylinders only cleaned 3 injectors so only some fuel is getting through because when the engine is running you put your foot flat to the floor and it does not rev.

2 Answers


Not enough info here to guess- "only cleaned 3 injectors"?! anyway, that car is now 30 years old (300 in human years) so it could be anything- you will have to start doing a complete restoration if you like that thing enough, and that is going to get expensive- bear in mind that these were premium cars back in the day- owned by sheikhs, rock stars and F1 drivers- but they are not real valuable now because there were many made- maybe you could start with the catalytic converter, the entire fuel system and the ignition system- whew-


Could be a bad distributor cap, check it for cracks. Also, check the inside for dirty or warn contact points.

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