How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Robert Your Own Question

Robert, UK Qualified Car Technician
Category: Car
Satisfied Customers: 4340
Experience:  Fully qualified / self employed garage technician in the UK
Type Your Car Question Here...
Robert is online now

There, we just bought a car from a dealer. Some things were

Customer Question

Hi there, we just bought a car from a dealer. Some things were wrong so got him to fix it and do a new MOT. cert is online but got no paperwork so not sure what he checked but it has come back. Looking at oil cap, there is a watery light brown mud colour on cap. Inside the oil is quite dark. My partner thinks it's burnt oil or a mixture of fuel and oil (something like that) suggestions on cause?
Submitted: 11 months ago.
Category: Car
Customer: replied 11 months ago.
The car is a vauxhall corsa's 1.2 if that makes a difference..friend said it might be seal might be damaged. They have said they will give us money back and trade it back in but I'd like to see if it's an easy fix first. Apart from a little dark, inside looks fine...
Customer: replied 11 months ago.
I have attached what it looked like on the oil cap. Thank you
Expert:  Robert replied 11 months ago.
What exactly was the things you had fixed or rectified by the dealer aswell as MOT?
Whats the registration?
How does the car perform now? any issues with the engine or overheating that you can tell?
Customer: replied 11 months ago.
He fixed the indicator and the bonnet lever. The oil light was coming on also. and there was a petrol leak underneath somewhere. He never told us the problems he fixed, it just came back fixed. It now sounds a little funny run wise whereas before it was smooth. Registration is NU53 DCZ
Expert:  Robert replied 11 months ago.
Ok i see the car an got about 85,000miles. MOT advisory is antiroll bar and both cv gaitors not seriously damaged but preventing ingress of not overly serious to be honest but may have to be addressed at somepoint..but they should of provided you with a print out or pass certificate regardless of whether its online...
However the issue with the contamination - that could very well be sign of headgasket trouble or even timing cover gasket failure the water pump is bolted to the timing cover and through into the head so if the gasket fails it can then send traces of coolant into the oil via the timing chain housing into the sump..thats one possible issue - aswell as these engines tend to have trouble with timing chain any noise/timing chain noise from the timing cover will certainly point to that...if coolant is getting into the oil then you will see a marked drop in coolant level so you'll have to monitor that closely....the oil light is concern..things need to be taken into account as far as - when was its last oil/filter service..might be worth trying? whats the oil level like now..if its too low then that may be your trouble?..if its recent the oil service then you'll need to have the engine's oil pressure tested and an inspection of oil pressure switch to determine if thats at fault or the oil pumps failing.but a pressure test on the engine to ensure its within spec will rule out either way..But the factors with the cross contamination and the oil light and the engine sounding unusual..may point to either headgasket fairly likely id say without seeing it or through what ive seen on these engines before or as i mentioned above the timing cover gasket..both of which can be a fairly expensive to fix especially if you just bought the say at least let the garage if its under warranty sort it out..if they dont then you have the option of taking up the offer of money back..and look for a better example elsewhere..I do hope this helps

What Customers are Saying:

  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, do indeed know your stuff. Jim
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex

Meet The Experts:

  • Greg



    Satisfied Customers:

    Automotive diagnostic tech
< Last | Next >
  • Greg's Avatar



    Satisfied Customers:

    Automotive diagnostic tech
  • Matt's Avatar


    Mechanical Engineer

    Satisfied Customers:

    BEng hons Mech engineering, in auto industry 22 years
  • Ross's Avatar


    Diagnostic and repair technician

    Satisfied Customers:

    Licensed diagnostic and repair technician
  • Rob's Avatar


    ASE Certified Technician

    Satisfied Customers:

    30 years trade experience
  • uk_iaibal's Avatar


    UK Car Mechanic

    Satisfied Customers:

    Verified Car Mechanic.
  • Billy's Avatar


    Trainer/ Master Technician

    Satisfied Customers:

    Trainer 8+ years, master tech. 10+ years, SAE member
  • Mike Kelly's Avatar

    Mike Kelly

    Auto Service Technician

    Satisfied Customers:

    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.