Engine Knock
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Teching In
Joined: Mar 2006
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From: Kentucky
Engine Knock I went to look at this 95 Z28 on Sat. The car has been sitting for about 7 or 8 months, before the guy parked it he said that it had overheated (after having a water pump put on it) while he was teaching his daughter how to drive it. He parked it, let it cool, then when he restarted it, it had this awfull "Knock" in it as it does now. HE was told by someone else whom used a stethoscope on it that it was coming from the back of the driver side head 
If anybody knows what this could possibly is (besides a spun bearing) please....HELP.
If anybody knows what this could possibly is (besides a spun bearing) please....HELP. 
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Joined: Aug 2007
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From: Cypress, TX
I went to look at this 95 Z28 on Sat. The car has been sitting for about 7 or 8 months, before the guy parked it he said that it had overheated (after having a water pump put on it) while he was teaching his daughter how to drive it. He parked it, let it cool, then when he restarted it, it had this awfull "Knock" in it as it does now. HE was told by someone else whom used a stethoscope on it that it was coming from the back of the driver side head If anybody knows what this could possibly is (besides a spun bearing) please....HELP.
If anybody knows what this could possibly is (besides a spun bearing) please....HELP.buying it? Or helping to diagnose it? What's the motivation? Not that that
determines what the issue is. Has there been any other troubleshooting
done besides the stethoscope check?
Thread Starter
Teching In
Joined: Mar 2006
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From: Kentucky
Yeah, I was looking at it to buy it, the car itself is in pretty good shape, the guy has dumped probably $4000 in it. But, he told us that he hasnt bothered movin it since it started havin this problem. (He bought a new toy instead) My dad and I drove it yesterday it has a misfire, and no power, so where pretty sure it atleast has a Blown headgasket, but my dad said its possible some of the coolant leaked onto the cam journals and that could be it.
Thread Starter
Teching In
Joined: Mar 2006
Posts: 6
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From: Kentucky
Yeah, I was looking at it to buy it, the car itself is in pretty good shape, the guy has dumped probably $4000 in it. But, he told us that he hasnt bothered movin it since it started havin this problem. (He bought a new toy instead) My dad and I drove it yesterday it has a misfire, and no power, so where pretty sure it atleast has a Blown headgasket, but my dad said its possible some of the coolant leaked onto the cam journals and that could be it.
Last edited by whtknt; May 18, 2008 at 01:17 PM.
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Yeah, I was looking at it to buy it, the car itself is in pretty good shape, the guy has dumped probably $4000 in it. But, he told us that he hasnt bothered movin it since it started havin this problem. (He bought a new toy instead) My dad and I drove it yesterday it has a misfire, and no power, so where pretty sure it atleast has a Blown headgasket, but my dad said its possible some of the coolant leaked onto the cam journals and that could be it.
Coolant can't "just" leak into the cam bearings. If coolant made it to the cam bearings, it also made it to the lifters, crank and rod bearings. Coolant destroys the viscosity of the oil, and topped with the fact it has no idle oil pressure, it's highly possible that the bearings and bearing surfaces are all trashed. The knocking you hear is likely a spun bearing on one of the rear cylinders and/or some valvetrain issues. If he'll allow you to do so, I'd drain the oil and check for metal.
Not sure if that answers your question...
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Teching In
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From: Kentucky
The guy is asking 3000 for it right now, if I can talk him down enough I might be able to justify buying it. Does anybody now of any good rotating assemblies that are fairly cheap? (Just so that I can add that into my estimate for expenses) Depending on how the numbers come together, that will justify the likely hood for purchase.
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Thread Starter
Teching In
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From: Kentucky
I just offered them 12 for it today. I havent heard back from them yet but I doubt they'll take it. He's already turned down 1000 for it. But, this is what im really lookin for, right color, it had t-tops, new paint, 6-spd. But I cant afford to pay them anymore than 12 for it.
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From: Decatur, TN (N-W of Athens)
I hope you mean $1200 and not $12 heh. I'd say, if you knew the block was good (and hopefully the crank), $1500 would be the most. As for what's wrong, it could be a toss up on a few things. Sounds like a spun bearing though.
your going to fast theres going to be more and more every week cause gas it crazy. some people cant afford it so there going to sell it. move on and find something better not worth it unless he takes the 1200 then u got to dump atleast 1000+ into . for that much 2000+ up to you or u can wait till u get 4000-6k and your money will be well spent. hows the body,interior,rearend,suspen ect.
i'd wait if i was you thats my opinion. cause everytime some1 rushs into things.......bomb .........there goes money
i'd wait if i was you thats my opinion. cause everytime some1 rushs into things.......bomb .........there goes money
hey i bought this car a month ago on ebay, i have already put 3000miles on it with no problems so just wait and hunt for a better deal
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