Skip the auto shop - Our mechanics make house calls

Q: The car don't start. It's a Mercedes C class C200

asked by on

A message was on the dashboard saying engine coolant low was on for maybe a month or so I looked at the level it seemed OK I was going to take it to a garage next two days. The car didn't start this morning. Last night maybe a mile away from home the engine light came on I stalled then all the lights came on, on the dashboardon, I turned off the car. I tuned the car on again and came home , then this morning didn't turn on I try to jump star it but it didn't. I noticed that a black liquid came out of the cooler tap I opened it and the liquid was kind of thick and black. What do you think is wrong with it. Many thanks Mimosa

My car has 130000 miles.
My car has a manual transmission.

A: The black liquid coming out of the coolant ...

The black liquid coming out of the coolant cap is most likely oil in your coolant. This is typically a sign of a blown cylinder head gasket. This can happen when the car overheats to an extreme level or has been overheated for a long period of time. If the coolant level has been low for a month, this is likely a result of this. When this happens, this head gasket will leak oil into the coolant and cause a major drop in compression as a result of not being able to seal off the combustion chamber. This is what causes the car to stall. I would recommend having an expert from YourMechanic come to your home to inspect the liquid and diagnose the starting problem in order to have this corrected.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Need to have transmission fluid flushed after I used the wrong kind

CVT and automatic transmissions function differently and have different transmission fluid needs. Only approved fluids should be used in the your automatic transmission. The vehicle may function normally but may wear much more quickly with the wrong type of fluid....

Q: cracked oil pan

Hello. It is possible that the service shop doesn’t know exactly what is leaking or where the leak is coming from. When there is a leak that is hard to detect, sometimes a technician will introduce dye into the oil,...

Q: Is a no crank situation due to faulty neutral safety switch?

Hi, thanks for writing in. Yes. Your car could have a bad neutral safety start switch but also by what you are saying it could be your starter solenoid. I can't find a specific place of where your neutral safety...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...