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vx loud engine knocking

dylan720

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Hey my 2002 vx commodore stock v6 has a loud engine knock. I was driving and just as i was turning into my street it overheated and about 2 seconds later it just went bang like hitting 2 solid metal bars togeather thats the best way to explain it. I managed to get it home and i left it for about an hour to cool down and then started it again and when i did its running on 5 cylenders and knocks 4 to 5 times then just idles rough. And when i put it in drive or reverse it just starts knocking again and then makes a weird popping noise and stalls.

Any help would be great thanks
 

Cheyne92

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Sounds like it could be that you have spun a big end bearing
 

dylan720

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Ok then thats what i thought im just wondering if its worth doing the motor cause its done 300,000 and when i do a compression test each cylender is reading 60 psi besides that the head gaskets have been done twice so im to sure if to bother rebuilding this motor or just bying another one.
 

accentstencil

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A good second hand motor can be bought quite cheaply these days.
 

dylan720

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Ok then one more thing is if i buy a motor thats got 160,000 will the computer reset to what the new motor has done or will it still read 300,000 from the original motor ?
 

accentstencil

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Ok then one more thing is if i buy a motor thats got 160,000 will the computer reset to what the new motor has done or will it still read 300,000 from the original motor ?

No it won't, the kms are stored in the cluster.
 

dylan720

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can you get the cluster reset so it shows the right amount of kms
 

supercharger kingy

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i think you have to take it to a auto electriction or holden with proof of new motor so they can change it
 

goose202

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The rest of the car has still done 300k km. That is the right number to display. Why do you want the cluster to say 160k? You've got no guarantee that the replacement engine has done what the donor car said on it's odometer anyway.
 
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