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My 2013 250 C Sport is knocking during start up and has

Customer Question
My 2013 250 C...

My 2013 250 C Sport is knocking during start up and has engine light on, runs fine once is rolling.

Mechanic's Assistant: Where exactly do you think the noise is coming from? And how long has this been going on?

Sounds like valves to me, as noted only during start. 75,000 miles

Mechanic's Assistant: What is the model of your '13 Mercedes?

Yes 250 C Sport 2013.

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

No I'm going to take it in but am wondering how much is reasonable.

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

No, as noted it runs well just starts rough.

Submitted: 8 months ago.Category: Mercedes
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Answered in 3 minutes by:
10/3/2017
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 8 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 5,492
Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 8 months ago

Hey how are you

Well I would do an oil filter change and go a to a lower weight oil , have the oil pressure test at idle ,and check for oil sludge in the oil pan

now since it is good when rolling ,,the oil change and oil weight might help and not needing major repairs ,now worse case scenario if the head and lifter has to be fixed and oil pump ,should be not more than $2500 that is worst case

if oil pan and oil pump ,$1500 ,but start with oil change first and go from there

You are very welcome :)

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Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 5,492
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Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles

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