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Mercedes c230 sport 2006 drivers side of engine will not…

Customer Question
Mercedes c230 sport 2006...

Mercedes c230 sport 2006 drivers side of engine will not fire after replacing vacuum pump

Mechanic's Assistant: Have you checked the fluids recently?

Yes

Mechanic's Assistant: Are you fixing your C230 yourself? What have you tried so far?

Replaced vacuum pump because it had crack and was leaking oil.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Yes I swapped the coil packs and still had same condition also changed the plugs

Submitted: 5 months ago.Category: Mercedes
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Customer reply replied 5 months ago
Vehicle was shaking badly before replacing vacuum pump
Customer reply replied 5 months ago
No vacuum leaks
Customer reply replied 5 months ago
Scanned engine mis fire cylinder 4,5,6
Answered in 2 hours by:
3/15/2018
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 5 months ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,268
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
Verified

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 5 months ago

unplug coil 4, test the pins for the following with the key on

  1. violet wire with yellow stripe- 12 volts positive
  2. blue wire with yellow stripe - ground
  3. green wire with yellow stripe- ground
  4. yellow wire- 12 volts positive
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Customer reply replied 5 months ago
Would you like to check wires for cylinder 5 and 6 as well ? What is your thinking so far do you think it’s an open circuit?If test shows correct voltage and ground readings then what should I do?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 5 months ago
Just cyl 4. Please check and get back with me .
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