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E60 M5 and E61 M5 Touring Discussion 2005- Advertiser's Forum

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post #31 of 71 Old 19th January 2017, 06:41 AM Thread Starter
ninjabmw
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Okay so this is what i did i put some atf fluid in that cylinder let it sit over night. This morning i did a compression check on that cylinder and it went from 30 to 60 and the car was working Okay kind of. So i am going to put some atf tonight as well in there and let it sit there again to start up next working and see whats happening. I think this happened because the car sat for 1-2 months and the cylinder rings got stuck and that is why i am having this issue but the smoke is still there so i think its the valves there is 20 of them total i think.

My next question is if i decide to do the valves my self is there any adjustments needed to be done to the engine if i tear it down? please let me know thank you.
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post #32 of 71 Old 20th January 2017, 12:41 AM
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Add some engine oil and re-check compression right afterwards. If it goes up then there is an issue with the rings, If there are any other issues with valves or head gaskets. You can find out by doing a cylinder leakdown test as mentioned before, that will give you all your answers. As far as tearing the engine apart I would advise against so if you do not have much experience. There are special tools required, and any slight error in re-assembly can cause major engine damage.

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post #33 of 71 Old 20th January 2017, 06:08 AM
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post #34 of 71 Old 20th January 2017, 09:56 PM Thread Starter
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UPDATE

So after another night of ATF fluid in the spark plug hole the compression to up to 90 just like all the other cylinders and the oil consumption went down from driving 40 miles with 1 liter of oil to driving 40 miles with just .4 liters of oil. So as mentioned i used the Marvel Mystery oil from a local autozone and added it to all the cylinders on the passenger side because mainly that's were the smoke is coming out now. I am going to start it today and see what happens and probably going to change the oil as well. Will keep you all posted as to what happens next.
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post #35 of 71 Old 23rd January 2017, 05:32 AM Thread Starter
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Another UPDATE So i went and bought a cylinder leak down tester just to make sure my cylinder 5 was OK. I ditched the gauges and hooked it straight to my compressor after taking the oil cap off to listen for some noises as well as the coolant cap to see if there are any bubbles there was no hissing or bubbles. I went to the exhaust pipes on the passenger side and sure enough the compressed air was coming out from the exhaust. So this means it is not the rings that leaking oil its either the spring that is broken on cylinder 5 or the valve it self. Can someone give me any info on this or share your thoughts would greatly be appreciated.
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post #36 of 71 Old 23rd January 2017, 06:22 AM
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Originally Posted by ninjabmw View Post
Another UPDATE So i went and bought a cylinder leak down tester just to make sure my cylinder 5 was OK. I ditched the gauges and hooked it straight to my compressor after taking the oil cap off to listen for some noises as well as the coolant cap to see if there are any bubbles there was no hissing or bubbles. I went to the exhaust pipes on the passenger side and sure enough the compressed air was coming out from the exhaust. So this means it is not the rings that leaking oil its either the spring that is broken on cylinder 5 or the valve it self. Can someone give me any info on this or share your thoughts would greatly be appreciated.
Issues have been reported about broken springs. But typically you get misfires when that happens. You must have a bad valve seal. The oil in the heads somehow makes into the combustion chamber seeping along the valve stem opening? Either way, the head has to come off. The motor has to come out. And lotsa cool special tools are needed. Of course, this is a major pain in the rear end and will be expensive.

But if you burn 0.4L of oil in 40 miles, gosh you are burning it at a high clip. I would almost argue that you must see oil inside the chamber with a borescope when the engine has been sitting still for a bit. Of course, no guarantee.

Last edited by rt7085; 23rd January 2017 at 06:25 AM.
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post #37 of 71 Old 23rd January 2017, 07:10 AM Thread Starter
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Of course i am already on the route to ordering the vanos/camshaft adjusting tool for 250-300 from ebay because i am going to take the whole passenger side of the motor of to see what is happening on that side so the vanos on that side needs to be re calibrated again. I am guessing its the springs that are bad on that leaking oil into the chamber and burning from the exhaust since the cylinder pressure test showed me that it was leaking from the exhaust. I have read on couple of places that the rings on the 06 tend to go bad because due to the manufacture issues being bad.
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post #38 of 71 Old 23rd January 2017, 06:16 PM
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post #39 of 71 Old 24th January 2017, 05:28 AM Thread Starter
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UPDATE

Okay, so i had a lot of time today and got right into work into tearing this beast up on the passenger side to see what is happening down there. I have uploaded a picture that will explain a lot.

So Bucky by saying broken spring you mean the ones that are under small little things that are 20 of them that i took out?

Let me know thanks.
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post #40 of 71 Old 24th January 2017, 12:58 PM
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