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Thread: Big End bearing noise

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    Default Big End bearing noise

    Hey all,

    I own a 95 Civic with the stock D15B3 with close to 250,000 original kms. Everything runs fine and has good compression, but early mornings on a cold start, I can hear a distinct noise which I assume to be of the big end bearing in the crank. It goes away when the motor comes to it's normal working temperature. It has always been on auto fan and with the thermo valve working. I put Shell 10w40 oil.

    My question is; Should I change the oil grade to something thinner? Or should I just change the oil brand altogether?


    Click here to go to the SOLUTION


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    check the oil pressure first.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Wll get that checked first thing tomorrow.

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    Default

    Quote Originally Posted by supraman2jz View Post
    Wll get that checked first thing tomorrow.


    did you checked the oil pressure?
    What was that and plz share what is the process to check it out?
    I found myself bit attractive to get know about it. Tks.
    No Guts, No Glory.

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    you buy a pressure gauge and adapter to make it fit into the oil pressure switch port, then start the engine and read the gauge.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    So it turned out that the oil pressure was not the culprit. The previous owner had the clutch changed sometime back and the idiot mechanic had probably placed a jack under the engine on the oil pan (which is a common practice here), which in turn bent the oil pan out of shape, hence the oil pick up was not sucking in oil when the car was cold as the bent bottom of the pan was almost touching the mouth of the oil pick up, thus giving the notion of low oil pressure. Got the pan straightened out and problem solved. No noise and the oil light goes away quicker now.

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    one of my old pressure gauge pictures, literally used hundreds of times. the pipe and adapter are self made and the gauge was a high quality item.

    Never failed me.

    Big End bearing noise - olpress
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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