Need help diagnosing a catastrophic engine failure
Need help diagnosing a catastrophic engine failure Hey guys i need some opinions as to what went wrong. I bought this 2002 camaro with a blown LQ9 the guy didnt have much clue as to what happened just that it didnt work. I dont have the money to take it apart right now, but i still would like to know what im gonna need to fix it. anyway this is what i know:
The engine blew up(or so the guy says and i cant charge the battery to check for myself)
there is no engine oil
there is oil leaking out of the left exhaust pipe.
Thoughts?
The engine blew up(or so the guy says and i cant charge the battery to check for myself)
there is no engine oil
there is oil leaking out of the left exhaust pipe.
Thoughts?
Last edited by KingPin1094; Dec 23, 2012 at 12:24 PM.
yea there was, but the engine sounded fine.
anyway i found out a connection rod broke, but it must have broke on the downstroke and not messed with the top end.
i looked and i found remains of the piston rings and i could see the connecting rod hangine.
anyway i found out a connection rod broke, but it must have broke on the downstroke and not messed with the top end.
i looked and i found remains of the piston rings and i could see the connecting rod hangine.
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Joined: Feb 2009
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From: ohio
That block may be in worse shape than you're hoping. You're going to need a complete tear down anyway so as long as everything is done right this time and good parts are used, the fatal issue should be history. I'm wondering if somebody didn't miss a shift with weak rod bolts though.
good luck
My 1999 trans am with stock ls1 with 93k on the clock spit not one but two rods through the side of my block and oil pan. Broke two rods, and a piston, not to mention the block obviously and all those other parts inside were trashed.
Oh yea, this happened on start up literally. Crank rurr rurrr rurr ruuuuu snap!
My 1999 trans am with stock ls1 with 93k on the clock spit not one but two rods through the side of my block and oil pan. Broke two rods, and a piston, not to mention the block obviously and all those other parts inside were trashed.
Oh yea, this happened on start up literally. Crank rurr rurrr rurr ruuuuu snap!
Yea i know im hoping the cylinder walls are not scored to bad. otherwise im just gonna bore it. Are the cranks forged from the factory? cause if so ill take it to a shop and make sure its okay and then get APR rod bolts forged connecting rods and forged pistons. Im also curious if the top end is f'ed too. The fact that it ran makes me think not, but it might be. I wanted to put my own cam and heads in it anyway.
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The crankshafts are alot stronger than cast but not as strong as forged . I can;t remember what process They use . The only way to know what all is useable and what is not useable is to tear it all down , clean and measure . Aftermarket forged rods come with ARP bolts some of them are 7/16" which are way stronger than factory LS1 rod bolts .
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Verdad Gallardo The crankshafts are alot stronger than cast but not as strong as forged . I can;t remember what process They use . The only way to know what all is useable and what is not useable is to tear it all down , clean and measure . Aftermarket forged rods come with ARP bolts some of them are 7/16" which are way stronger than factory LS1 rod bolts .
Was the blue smoke on the side of the conn rod failure?
You might luck out, and only have to deal with that cylinder.
An oil pressure fail may complicate the project, but if you didn't spend much to get the car, it might be worth fixing. Regarding an oil press fail, if the engine shut down immediately, it could be ok.
Depending upon where you live, you'll have all winter to bring it up to "snuff".
You might luck out, and only have to deal with that cylinder.
An oil pressure fail may complicate the project, but if you didn't spend much to get the car, it might be worth fixing. Regarding an oil press fail, if the engine shut down immediately, it could be ok.
Depending upon where you live, you'll have all winter to bring it up to "snuff".
The fact that it ran makes me think that nothing inside is siezed (pertaining to the other 7 cylinders) so i may just have to deal with this one. Its either cylinder 1 or 3 i havent taken it apart yet but based on where the whole/rod is and the blue smoke/ oil out the exhaust on the driver side thats my guess
