Team Infiniti Posted December 22, 2018 Report Share Posted December 22, 2018 (edited) A friend has issues, figured someone here may be able to help. High mile, previously neglected, 03 325i, sketchy oil change histoy Sudden drop in pressure, pan dropped, clean crusty oil pump and sump, free up half stuck oil pump pressure relief valve, find 9 threads of a rather large(10mm?) hollow bolt among the crust. Still has low pressure. Ideas? Edited December 22, 2018 by Team Infiniti Quote Link to comment Share on other sites More sharing options...
Snorman Posted December 22, 2018 Report Share Posted December 22, 2018 "A friend"...looking forward to seeing your new 325 at Sebring. 3 Quote Link to comment Share on other sites More sharing options...
BigMoneyWasters Posted December 25, 2018 Report Share Posted December 25, 2018 Are you doing a direct reading oil pressure test? E46s are famous for the yellow oil light coming on. Yellow being oil level, turns red when it's oil pressure. Just making sure that the yellow oil light isn't your reason for concern. Quote Link to comment Share on other sites More sharing options...
Team Infiniti Posted December 25, 2018 Author Report Share Posted December 25, 2018 2 minutes ago, BigMoneyWasters said: Are you doing a direct reading oil pressure test? E46s are famous for the yellow oil light coming on. Yellow being oil level, turns red when it's oil pressure. Just making sure that the yellow oil light isn't your reason for concern. He has verified and has new sensor. What could that hollow bolt be? Quote Link to comment Share on other sites More sharing options...
BigMoneyWasters Posted December 26, 2018 Report Share Posted December 26, 2018 Hollow bolt is most likely part of the vanos system. Not sure what to say about the low oil pressure, although my E46 daily driver has developed an engine rattle at 220K miles so I may also have a similar problem. Quote Link to comment Share on other sites More sharing options...
Team Infiniti Posted December 26, 2018 Author Report Share Posted December 26, 2018 42 minutes ago, BigMoneyWasters said: Hollow bolt is most likely part of the vanos system. Not sure what to say about the low oil pressure, although my E46 daily driver has developed an engine rattle at 220K miles so I may also have a similar problem. Kind of figured it was vanos related but unsure what affect it has on oil pressure. Quote Link to comment Share on other sites More sharing options...
Team Infiniti Posted January 1, 2019 Author Report Share Posted January 1, 2019 (edited) Oil pressure measured directly, 25, 20, 10, 10 after a few minutes 220k miles, looks like the vanos has never been rebuilt, he figures for $100 he is going to give it a try. Is 220k some sort of turning point for these? Any other ideas? Edited January 1, 2019 by Team Infiniti Quote Link to comment Share on other sites More sharing options...
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