Lost oil, now its knocking
Lifters usually let you hear them before operating temps then it goes away. Bearings usually don't make a noise until operating temps.
Did you ever pull a valve cover?
Did you ever pull a valve cover?
could be piston slap also, dosnt sound to seriouse to me if it was seriouse you would hear it at idle as well.
i would say if it comes at higher rpms its in the top end
i would say if it comes at higher rpms its in the top end
How did you let it run low on oil in the first place? Don't the Camaro's have low oil level lights? My 98 TA does.....
As far as rod bearing, they won't always be noticeable at idle. Heck, I've had to rev a couple of them to 3K before I could hear any knocking before (non LSX vehicle).
As far as rod bearing, they won't always be noticeable at idle. Heck, I've had to rev a couple of them to 3K before I could hear any knocking before (non LSX vehicle).
TECH Fanatic
Joined: Jan 2010
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From: Euless Tx
Mine was the complete opposite. When I had a lifter take a crap on me, I couldn't hear it at all on a cold start. About 5-10 minutes later, after the car was warmed up, I could hear the lifter tapping.
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is said car a 98? I will assume so being a sport gold car.
same thing went on with a buddies 98 motor, installed camshaft and supporting mods, even a ported ls6 oil pump, just got done tuning with rev limiter set at 6600.
on his way home it started knocking, and just like you said, did not notice till the oil would get some heat in it.
its not going to get any better....
same thing went on with a buddies 98 motor, installed camshaft and supporting mods, even a ported ls6 oil pump, just got done tuning with rev limiter set at 6600.
on his way home it started knocking, and just like you said, did not notice till the oil would get some heat in it.
its not going to get any better....
when my oil level got low in my car, the light came on, then i added like 2 quarts it was good, i did have a high volume oil pump as well. when you were driving the car hard did the oil pressure ever reach zero? because thats what would have caused this, but the check gauges light would have turned on.
Sounds to me like something else happened. He said he checked the oil and didn't drive it, then suddenly it was 2 quarts low. My money is on a spring seat broke and all the oil is leaking into the cylinder. You shouldn't get a massive amount of oil up there at once but after a few good hard pulls, its possible you lost 2 quarts thru a broken spring seat and didn't notice it.
Teching In
Joined: Oct 2011
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Well, I recently went\am going through the exact same process you are but I'm a little ahead of where you are. 2k rpm was the magic number for me, also sounded perfect until I hit operating temp. Brought it to a few different places to get opinions, most said lifter but some said wrist pin.... I did notice the noise was favoring the upper passenger side so I started there. Pulled plugs, cylinder 6 was dead... Did a compression check and found nothing... Ran like crap, blowing soot out the exhaust. Failed the dollar bill test. Basically a dead miss. Decided to pull the head on the passenger side (Cylinder 6) first and found a bad lifter which chewed the cam lobe. I'm currently in the process of putting it back together after replacing the lifters, springs, pushrods, Cam, etc... I went ahead and installed a HV oil pump as well.. Hopefully, I will be cranking it back up in the next day or so as I am now recovering from the pickup tube bolt install. For those of you who have done this without dropping the oil pan you know what I mean. I would pull the plugs first, that will tell you everything you need to know. I'm no expert here but I'm willing to bet that noise your hearing is one of your lifters beating the cam.
Also what oil are you using? Once had a truck come to me (sonoma) with a Loud knocking coming from the bottom. I guess whoever did the oil change last put 20w50 in it and **** was knocking, changed it to 5w30 and problem fixed, knocking never came back. Spoke to him 5 months after and nothing had came back. Shops were trying to sell him an engine too. 