Whats Knocking in my motor?(video)
01-21-2006, 05:59 AM
#21
Originally Posted by Flick5959
99BlAcKz71 that nosie if from the number 8 cyclinder and you cant fix it. it is a factory defect since chevy over bored that cyclinder 4mm which makes that knocking nosie and i wont go away untill after the engine warms up. my buddy had that problem with his 03 and that is what he dealer told him.
99 to me it sound like a lifter form that video it has a higher pitch knock to it which is exactyl what my 5.3 sounded like. I did a cam swap on it and went ahead and did lifters too and the noise went away. If you are strapped for cash and you can do the work yourself then buy you some lifters and swap em out. Its really not that hard to pull the heads just time consuming. If you need any help let me know I am a self taught expert pretty much due to my screw ups and so on
01-21-2006, 08:44 AM
#22
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Change the oil and put one quart of marvels mystery oil in place of one quart of oil. If you just changed the oil, dont change the filter. If its a lifter, the MM will pump it back up. If its not a lifter, it ll clean the top of the engine. I did this on my other truck and in about 200 miles the ticking went away. Run the oil about 1200-1500 miles and change it back out. If it doesnt work you just out of a few quarts of oil, the top of the motor is cleaner.
01-21-2006, 02:24 PM
#23
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Y aIll check into it, thanks guys!
I would like to just go ahead and do a cam swap and everything but I have to pay of my new trans first!
BTW 1slow01z71- That 418 sound so badass!!!
I would like to just go ahead and do a cam swap and everything but I have to pay of my new trans first!
BTW 1slow01z71- That 418 sound so badass!!!
01-21-2006, 02:45 PM
#24
Well it doesn't sound anything like my old motor so I doubt it is internal damage. I think I'm voting with the others on the lifter. I would give that MM oil a try and see if it improves. It may just be an annoying trait of the motor and not much you can do about it.
01-21-2006, 05:05 PM
#25
Is the sound more pronouned near the bottom end? Stick your head near the fenderwell and listen. I bet it's a lifter. I had a lifter(s) ticking real loud. I was going to change them out, but didn't have the time/cash to pull heads etc. After a couple hundred miles the ticking went away. No lifters were changed and no tick has come back up. They fixed themselves. The tick was much louder than yours too.
Philip S.
Philip S.
01-21-2006, 08:10 PM
#26
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I might take another video of it cuz that one was taken just as it warmed up, but it gets worse. I cant really tell where exactly it is coming from, I even tried checking outthe topend with a stethescope, but it seems like it is coming from down low. If I take a wooden broom handle and put it on my oil pan, I can hear it quite well.
01-23-2006, 08:17 PM
#27
if you think it is a rod bearing pull the plug wires one at a time if the noise goes away on one then you probably have a spun bearing but it would go away with rpm well it didn 't on my car anyway. mine had a strnge tic when i went to arkansas i put in a quart of lucas and it seems to be better now.
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