metal shavings in oil
03-23-2011, 04:38 AM
#1
Launching!
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metal shavings in oil I usually don't see any more than what I would call fuzz (dust sized particles), on the drain plug after 2500-3000 mile oil changes.
Well after my most recent change. I saw large flakes about 1/8in long completely covering the the magnetic tip.
The catch is that I ran the car at the Hockenheimring for 4 20min sessions, I quit the last session when I noticed that the oil pressure was about 35psi at 6000 rpm.
Any ideas on what kind of metal I'm seeing? and what can I do to prevent this from happening again?
Engine has 98,000 miles, water temps never exceeded 210. Oil used was castrol 5-30, and filter was a fram.
Thanks for the help.
Well after my most recent change. I saw large flakes about 1/8in long completely covering the the magnetic tip.
The catch is that I ran the car at the Hockenheimring for 4 20min sessions, I quit the last session when I noticed that the oil pressure was about 35psi at 6000 rpm.
Any ideas on what kind of metal I'm seeing? and what can I do to prevent this from happening again?
Engine has 98,000 miles, water temps never exceeded 210. Oil used was castrol 5-30, and filter was a fram.
Thanks for the help.
03-23-2011, 06:56 AM
#4
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At 98K on the car you have to expect that the motor has wear. I think the guys pin pointed your problem so start saving your money for a short block and just enjoy the motor for as long as it last. Some have ran their motor for a long time after the same problem. It's hard to kill one of these motors.
03-23-2011, 07:31 AM
#7
This is true, What the crank rides on, supposed to be a thin layer of oil and the crank journal should never touch the bearing its self,The bearing has different layers of materials by different companies that make them, Like babit , copper, brass , etc..... ,But bearing body its self is steel and magnetic but if you get that far down you will definitely know it, by very little to no oil pressure and very loud knock.
For the metal that you see, you might have a cam lobe going down and were the lifter has preload on it, you wont here any rocker noise until the wear on the lobe exceeds the preload of the lifter causing the rocker arm to get loose . Not saying this is your problem but something you might look at.
For the metal that you see, you might have a cam lobe going down and were the lifter has preload on it, you wont here any rocker noise until the wear on the lobe exceeds the preload of the lifter causing the rocker arm to get loose . Not saying this is your problem but something you might look at.
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03-23-2011, 07:33 AM
#8
The shell is magnetic but the bearing material in not. If he was seeeing pices of shell i seriously doubt the engine wooooood still be running.
Randy beat me too it lol
Believe it or not they are moving to ALL aluminum-silicon bearings.
Randy beat me too it lol
Believe it or not they are moving to ALL aluminum-silicon bearings.
03-23-2011, 12:37 PM
#10
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in my case it ended up being a rod bearing. oil pressured dropped for a few weeks then one day i was driving home...coasting down a hill and when i went to give it gas again she let loose. one of the worst noises you ever wanna hear from your car. but yeah start saving up. it took me 2 yrs to save the money to rebuild it. although i but heads and cam in so that was a little extra
03-23-2011, 02:33 PM
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I usually don't see any more than what I would call fuzz (dust sized particles), on the drain plug after 2500-3000 mile oil changes.
Well after my most recent change. I saw large flakes about 1/8in long completely covering the the magnetic tip.
The catch is that I ran the car at the Hockenheimring for 4 20min sessions, I quit the last session when I noticed that the oil pressure was about 35psi at 6000 rpm.
Any ideas on what kind of metal I'm seeing? and what can I do to prevent this from happening again?
Engine has 98,000 miles, water temps never exceeded 210. Oil used was castrol 5-30, and filter was a fram.
Thanks for the help.
Well after my most recent change. I saw large flakes about 1/8in long completely covering the the magnetic tip.
The catch is that I ran the car at the Hockenheimring for 4 20min sessions, I quit the last session when I noticed that the oil pressure was about 35psi at 6000 rpm.
Any ideas on what kind of metal I'm seeing? and what can I do to prevent this from happening again?
Engine has 98,000 miles, water temps never exceeded 210. Oil used was castrol 5-30, and filter was a fram.
Thanks for the help.
yikes.............. dam had no idea
in my case it ended up being a rod bearing. oil pressured dropped for a few weeks then one day i was driving home...coasting down a hill and when i went to give it gas again she let loose. one of the worst noises you ever wanna hear from your car. but yeah start saving up. it took me 2 yrs to save the money to rebuild it. although i but heads and cam in so that was a little extra
03-24-2011, 09:30 AM
#13
Compression test woooood be useless. Post up pics of the metal and pull the oil filter and inspect the filter media. If its a bearing going out you will know.
Last edited by O2Form; 03-24-2011 at 09:37 AM.
03-24-2011, 09:40 AM
#14
Your right, a compression test wont show a bad bearing. I just cant see it being a bearing down with no knock . Like i said before, the part of the bearing that rides on the crank journal is not magnetic only the bearing shell is, and if it was wore down that much ,the motor would be knocking to bet hell. The only parts that i can think of that are steel to steel witch is magnetic, would be the (cam & roller tip on the lifter) or the (timing chain & sprockets) and the (oil pump drive gear sprocket & oil pump) , (cam and thrust plate) witch is also magnetic and the (push rods & rocker arm) , That can wear to cause shavings that are magnetic. Two metal that are magnetic only the softer of the two will show signs of wear sooner. I wish you had pics of whats on the drain plug
03-24-2011, 09:52 AM
#15
With that many miles on the engine and the hard running that your doing , the rod & mains & cam bearing could be out of tolerance but not enough to cause a knock witch could lead to lower oil pressure than normal, plus during the high rpm and load on the engine and dont know what the temp on the engine was, your oil may just be breaking down causing a low oil pressure. What was your oil pressure after the run at idle ? And have you started the engine after it has cooled down completely to see what the oil pressure is. Just trying to break down the problems that your having so we can narrow down your issue.
03-24-2011, 02:33 PM
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This is true, What the crank rides on, supposed to be a thin layer of oil and the crank journal should never touch the bearing its self,The bearing has different layers of materials by different companies that make them, Like babit , copper, brass , etc..... ,But bearing body its self is steel and magnetic but if you get that far down you will definitely know it, by very little to no oil pressure and very loud knock.
For the metal that you see, you might have a cam lobe going down and were the lifter has preload on it, you wont here any rocker noise until the wear on the lobe exceeds the preload of the lifter causing the rocker arm to get loose . Not saying this is your problem but something you might look at.
For the metal that you see, you might have a cam lobe going down and were the lifter has preload on it, you wont here any rocker noise until the wear on the lobe exceeds the preload of the lifter causing the rocker arm to get loose . Not saying this is your problem but something you might look at.
03-25-2011, 12:35 AM
#18
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With that many miles on the engine and the hard running that your doing , the rod & mains & cam bearing could be out of tolerance but not enough to cause a knock witch could lead to lower oil pressure than normal, plus during the high rpm and load on the engine and dont know what the temp on the engine was, your oil may just be breaking down causing a low oil pressure. What was your oil pressure after the run at idle ? And have you started the engine after it has cooled down completely to see what the oil pressure is. Just trying to break down the problems that your having so we can narrow down your issue.
I noticed the oil pressure would sit at around 30-33 psi at 2000rpm cruising. Then when i left off, with the car in gear the oil pressure would jump up to 40psi or better. As soon as I hit the gas, and the engine starts pulling the psi goes back to 30?
Changed the oil and filter. Pressure is better, but still lower than normal.
Also there is a clattering noise at 2500rpm, but no extra valve noise at idle...
