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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #51  
Old 10-22-2013, 02:16 AM
2002-530I 2002-530I is offline
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Loosing my mind

Doesn't sound right to have two different readings. Sounds like maybe a valve was hanging open during the second test?
I know your very mechanically inclined and not trying to offend you.
Compresses air into the system is only one obvious sign of a blown HG between the CYL and a water jacket. It could still be blown elsewhere. Maybe start it and remove the oil cap. See if your getting excessive pressure into the crank case? I know it's not typical to have loss of compression and oil in the hole at the same time but if it was a typical problem I don't think you'd be on here for input from others.



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  #52  
Old 10-22-2013, 02:50 AM
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Quote:
Originally Posted by 2002-530I View Post
Doesn't sound right to have two different readings. Sounds like maybe a valve was hanging open during the second test?
I know your very mechanically inclined and not trying to offend you.
Compresses air into the system is only one obvious sign of a blown HG between the CYL and a water jacket. It could still be blown elsewhere. Maybe start it and remove the oil cap. See if your getting excessive pressure into the crank case? I know it's not typical to have loss of compression and oil in the hole at the same time but if it was a typical problem I don't think you'd be on here for input from others.



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Is ok, I am not offend. Two heads is better then one. I did that and no excessive pressure, I just replace ccv about a month ago, when she started smoking.


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  #53  
Old 10-22-2013, 02:55 AM
2002-530I 2002-530I is offline
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Hmm. Yeah the CCV crossed my mind but if that was guilty you should have oil in all the holes and it of course wouldn't have anything to do with compression. IDK maybe do another leak down test to be more conclusive. So if I remember you right you said it had a large amount of oil on this piston right?


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  #54  
Old 10-22-2013, 03:06 AM
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Originally Posted by 2002-530I View Post
Hmm. Yeah the CCV crossed my mind but if that was guilty you should have oil in all the holes and it of course wouldn't have anything to do with compression. IDK maybe do another leak down test to be more conclusive. So if I remember you right you said it had a large amount of oil on this piston right?


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Yes, it had a lot of oil, and knocking (ticking). The knocking is not as bad, after the oil weight change. Now only when it's cold.


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  #55  
Old 10-22-2013, 03:16 AM
2002-530I 2002-530I is offline
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So the misfire and oil started at the same exact as the knocking and ticking? Stating the obvious but I don't see this being a simple fix. Maybe slap an eBay engine in it and move on. In my past experience its not cost effective to rebuild an engine.


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  #56  
Old 10-22-2013, 07:33 AM
2002-530I 2002-530I is offline
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Loosing my mind

So the misfire and oil started at the same exact as the knocking and ticking? Stating the obvious but I don't see this being a simple fix. Maybe slap an eBay engine in it and move on. In my past experience its not cost effective to rebuild an engine.


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  #57  
Old 10-23-2013, 12:46 AM
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After giving it some thought and looking at how much I have put in to this engine, I have decide to rebuild.


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  #58  
Old 10-23-2013, 06:45 PM
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Do you have access to a mechanics camera. Kinda like a boroscope?


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  #59  
Old 10-23-2013, 10:19 PM
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Do you have access to a mechanics camera. Kinda like a boroscope?


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Nope, but hopefully next weekend, I will find out what the problem was.


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  #60  
Old 10-23-2013, 11:28 PM
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For those who have work on m54 engine, do I need the chain tensioner tool? Or can I do with out it, that's the only tool I don't have.


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  #61  
Old 10-26-2013, 06:38 PM
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Ok so I started taking her apart today, intake valves looks good. I think the problem is going to be exhaust valve.
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  #62  
Old 10-27-2013, 06:46 PM
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The head is out and ready for the machine shop. From what I can tell is all my exhaust valves are cover with carbon and looks burnt. But # 3 is the worst. Off to the shop tomorrow.
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This is #3
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Other valves
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  #63  
Old 10-27-2013, 10:22 PM
2002-530I 2002-530I is offline
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But you haven't yet found the source of all the oil? Did you plan on doing a lower end also?

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  #64  
Old 10-28-2013, 12:25 AM
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But you haven't yet found the source of all the oil? Did you plan on doing a lower end also?

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The exhaust valves was not closing all the way, causing oil to leak down to the piston.
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As seen in this pic. Doing top end only.


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  #65  
Old 10-28-2013, 12:37 AM
2002-530I 2002-530I is offline
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That don't make sense. There should be no oil in the combustion chamber, intake manifold, or exhaust manifold. How was that cylinder flooded with oil? Not closing certainly would cause your low compression but wouldn't cause oil or the knocking/ticking. Also what was keeping the valves from closing? Just some ideas. I'd hate to see you go through the trouble of rebuilding the head and still have a ring issue.


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  #66  
Old 10-28-2013, 12:59 AM
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Originally Posted by 2002-530I View Post
That don't make sense. There should be no oil in the combustion chamber, intake manifold, or exhaust manifold. How was that cylinder flooded with oil? Not closing certainly would cause your low compression but wouldn't cause oil or the knocking/ticking. Also what was keeping the valves from closing? Just some ideas. I'd hate to see you go through the trouble of rebuilding the head and still have a ring issue.


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I get what you are saying, I will find out for sure when I take it to the machine shop later today. But from what I can see, maybe a leaking seal cause oil to leak down the valves cover with carbon, and dry up with the heat in the engine, causing the valve not to close. Sorry these were taken with my phone. But this is a close up.Click image for larger version

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RIP ALPINE WHITE 97 528I
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  #67  
Old 10-28-2013, 01:08 AM
2002-530I 2002-530I is offline
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A leaky valve seal due to a very loose stem is possible I guess. That still don't explain the noise. Idk. Hopefully the machine shop finds something conclusive when the take it apart. I'd make sure to mention the noise to them. Maybe they will be able to find something in the head that was causing the sound. If not I think I'd do the lower end. Adam


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  #68  
Old 10-28-2013, 01:26 AM
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Originally Posted by 2002-530I View Post
A leaky valve seal due to a very loose stem is possible I guess. That still don't explain the noise. Idk. Hopefully the machine shop finds something conclusive when the take it apart. I'd make sure to mention the noise to them. Maybe they will be able to find something in the head that was causing the sound. If not I think I'd do the lower end. Adam


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Thanks Adam, what I came up with is, due to open valve the lifter was loose causing the ticking, it was only ticking on #3. Only time will tell, I will know for sure later.


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  #69  
Old 10-28-2013, 01:29 AM
2002-530I 2002-530I is offline
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Well, theoretically the lifter should have been tighter with the valve open but who knows. I'm sure we've both seen stranger things happen! Keep us posted.


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  #70  
Old 10-28-2013, 07:54 AM
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Check for bent exhaust valve #3. If so, maybe oil caused build up on piston. The bent valve may be secondary. The oil may have come from cracked head. Post a pic of the underside of the head.
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  #71  
Old 10-28-2013, 08:32 AM
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Loosing my mind

I just have one thing to add. Right after you place head back on the block and torque the last bolt,hook up the leak down tester to check for air sounds, anywhere. Of course each cylinder at TDC. Don't ask me how I know. It should save you a lot of heartache after you reassemble everything and find out you have a leak
Alan


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  #72  
Old 10-28-2013, 01:25 PM
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On my way to the shop, took some pic. As you can see, too much carbon and oil, # 3 right top exhaust valve was not closing.
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  #73  
Old 10-28-2013, 04:47 PM
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Quote:
Originally Posted by ztom View Post
Check for bent exhaust valve #3. If so, maybe oil caused build up on piston. The bent valve may be secondary. The oil may have come from cracked head. Post a pic of the underside of the head.
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This is the inside of the head, you really won't be able to tell just by looking at it.


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02 525I Sterling Gray, 18" M Parallels, M Tech bumper, Magnaflow Highflow cat, Resonator delete, 3" OBX muffler, H&R spring and Bills sport shocks.
RIP ALPINE WHITE 97 528I
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  #74  
Old 10-29-2013, 12:10 AM
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Thanks but I said underside, which you also got. The head looks odd - some exhaust thread post holes missing & a M mark. Looks like a previous head job, badly done? Head looks like a bad refurb unit?
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  #75  
Old 10-29-2013, 01:00 AM
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Thanks but I said underside, which you also got. The head looks odd - some exhaust thread post holes missing & a M mark. Looks like a previous head job, badly done? Head looks like a bad refurb unit?
Well I hope is not too bad, waiting for the shop to call.


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