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The BMW Range
1 Series
BMW E87 N46 Engine and Transmission overhaul
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<blockquote data-quote="Jimbing" data-source="post: 739917" data-attributes="member: 13444"><p>Update.</p><p></p><p>Engine oil have reduced to ~2ltr since last top up (refer prev update). After much Googling, it seems the problem lies with the Valve Cover Gasket (VCG) but since I have just replaced the VCG and the Oil Filter Gasket (OFG) the problem must be something else that resides within the engine bay that is leaking the engine oil on the the exhaust manifold, hence the light smoke and burning oil smell inside the engine bay (bonnet).</p><p></p><p>(Note: no white smoke coming out from the exhaust this rules out Valve Stem Seal)</p><p></p><p>Sent my E87 to my usual workshop (CL Auto) Taman Melawati, told them my suspicion that there must be a leaking within the engine bay. They told me to leave the car for a couple of days for them to look for the leak.</p><p></p><p>They found the culprit! :63: </p><p></p><p>It turns out the problem was the Valve Cover Bolt (refer image below) which bushing have worn out causing a bad seal between the valve cover and the engine housing which leads to engine oil to leak and drip onto the exhaust manifold. The leak was deep inside the engine bay which makes it very hard to detect from the naked eye.</p><p></p><p>I left the engine oil at 2ltr and monitoring the consumption, so far it has not reduced and it has been almost 1 week. No more smokey/burnt smell coming from the engine bay and engine running smoothly.</p><p></p><p>Glad I did not resort to swapping the engine as suggested by some workshop. As promised, I will try to upload a pic of the bills for the fix to compare the prices on the parts. :67:</p><p></p><p><img src="https://c1552172.ssl.cf0.rackcdn.com/378598_x800.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Jimbing, post: 739917, member: 13444"] Update. Engine oil have reduced to ~2ltr since last top up (refer prev update). After much Googling, it seems the problem lies with the Valve Cover Gasket (VCG) but since I have just replaced the VCG and the Oil Filter Gasket (OFG) the problem must be something else that resides within the engine bay that is leaking the engine oil on the the exhaust manifold, hence the light smoke and burning oil smell inside the engine bay (bonnet). (Note: no white smoke coming out from the exhaust this rules out Valve Stem Seal) Sent my E87 to my usual workshop (CL Auto) Taman Melawati, told them my suspicion that there must be a leaking within the engine bay. They told me to leave the car for a couple of days for them to look for the leak. They found the culprit! :63: It turns out the problem was the Valve Cover Bolt (refer image below) which bushing have worn out causing a bad seal between the valve cover and the engine housing which leads to engine oil to leak and drip onto the exhaust manifold. The leak was deep inside the engine bay which makes it very hard to detect from the naked eye. I left the engine oil at 2ltr and monitoring the consumption, so far it has not reduced and it has been almost 1 week. No more smokey/burnt smell coming from the engine bay and engine running smoothly. Glad I did not resort to swapping the engine as suggested by some workshop. As promised, I will try to upload a pic of the bills for the fix to compare the prices on the parts. :67: [IMG]https://c1552172.ssl.cf0.rackcdn.com/378598_x800.jpg[/IMG] [/QUOTE]
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