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Thread: Possible spun bearing

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    Possible spun bearing

    I think i spun a bearing my oil light will come on when car is warm and at a stop. I noticed when not under load when i rev it makes a knocking sound it doesnt sound like lifter tick, I listened to the oil pan and heard the knock clearly. I also never seen any shavings in the oil or pan. If i caught it fast enough can i just replace the bearings?


    Update: I pulled the engine out and looked at the oil pump. When i spin it by hand it will be hard to turn in one spot. does that mean its bad? Also dropped the pan would i visually be able to see if i did spin the bearing?

    Thanks

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    Forum User Feedback Score 13 (100%) Austin@STM's Avatar
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    Sounds like you spun a bearing. You wont be able to tell until you take it apart for sure. If they did spin you will need to get everything remachined. You will also have to clean everything that oil goes through and replace the oil pump and cooler at a minimum.

    -Austin@STM

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    What should I look for when I take the rods apart? Also will the block have to get machined to

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    Forum User Feedback Score 13 (100%) Austin@STM's Avatar
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    Depends what bearing spun. It its a main bearing then yes, also if enough debris got through the engine and scratched it all up it will need machining.

    You will know what your looking for when you find it. One or more of the bearings will look different than the other, and probably wont be smooth or clean looking.

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    So I should take the rod ends off to look at the bearings? Also witch one is main the ones on crank?

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    Forum User verified Feedback Score 1 (100%) Amphiron's Avatar
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    . main bearings = bearings that ride on the block. connecting rod bearings ride on the connecting rod journals

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    yea main bearings were bad the rod bearings were ok but im going to change them since they are out. Also whats a good way to clean the oil passages

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    Here for the party Not Verified Feedback Score 1 (100%) CoreyB's Avatar
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    Did they spin or just wear out? It makes a huge difference.

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    Well im not sure. The oil light came on for a few days(only for a sec each time) then i heard a knocking so i turned it off and inspected and found my bearings were bad. Whats the difference?

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    Here for the party Not Verified Feedback Score 1 (100%) CoreyB's Avatar
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    Its easy tot ell. If the bearing spun then it means the entire bearing turned in its holder. The back of the bearing would be worn along with the inside. If the wore out and didnt spin you may be able to just replace them but check your oil clearences. If they spun, its full rebuild time.

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