» Site Navigation | | » Recent Threads | OMG!OMG! Today 08:53 AM Today 08:53 AM 0 Replies, 151 Views | | My 318ti build 05-21-2024 04:48 PM 05-21-2024 04:48 PM 0 Replies, 1,484 Views | | | | | 09-11-2014, 04:33 PM | #1 | Member Join Date: Oct 2013 Location: usa Posts: 39 | Help me identify the source of these oil leaks Last edited by showaski; 09-11-2014 at 04:37 PM. | | | 09-11-2014, 04:46 PM | #2 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | My money is oil filter housing. To help with my leaks I sprayed a generous amount of simply green over leaks at a hand held car wash. Then cleaned the motor as best I could. That helped me identify 2 different leaks. One oil filter housing and the other power steering. __________________ ...steven BMW CCA #146825 1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i www.bmwcca.org | | | 09-11-2014, 08:06 PM | #3 | Senior Member Join Date: May 2007 Location: LA, Bellflower, CA Posts: 3,613 | Common oil leak locations are the oil filter housing (cheap small gasket but hours of work to do, easy tho), power steering hose, valve cover gasket, and oil pan. I was going to say vanos as well but forgot the m4x doesn't have that Haha. Have fun replacing those gaskets. Remember to lube or oil up the gaskets when you put them it. It'll help them "sit" in better.... Oh, and don't forget the o-ring for the oil dip stick __________________ -Theta Chi- Float like a cadilac, sting like a BIMMER .... my socket is just too thick and won't fit in the hole! damnit! Marv's 332ti is in the werks. Stay tuned ya'll ... Check list: S52 swap, manual transmission swap, 3.25 LSD with M Coupe diff cover, SuperSprint muffler, M3 style mirrors, AFE intake, ASC delete, M50 Manifold swap, UUC strut bar, ZHP lighted knob, Vaders, M-tech interior, OEM armrest, AC Schintzer front lip, AC Schnitzer rear spoiler, Roof spoiler, 18'' rims, M3 front drilled brakes, LED interior lights, 3 spoke Euro style steering wheel, OEM roof spoiler and bike holder, Thule fairing, Euro tail lights, oil pressure guage, carbon fiber hood painted to original paint (still showing CF weaving), what's next to do...? | | | 09-12-2014, 08:47 PM | #4 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | PM sent back about CCV, now that I see this thread and from there pictures it looks like a oil filter housing leak right where the one way o-ring pipe goes between the oil filter housing and block. I have fixed 3 oil filter housing leaks on 318's and they look like this with the oil everywhere. Get on that motor with a good detergent or engine clean with a brush. Clean the motor well then go for a quick ride around the block and park on a dry clean area of the driveway. You should see a leak right below the oil filter area where it connects to the block. This is a pressure leak so when these start leaking it pumps out a lot of oil since it is under pressure. That oil will leak to the oil pan all the way back to the transmission. the fan and air blowing under the car will blow that oil everywhere. Best, John S | | | 09-12-2014, 09:11 PM | #5 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | I also found this leak to be worse when it got cold out. __________________ ...steven BMW CCA #146825 1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i www.bmwcca.org | | | 09-13-2014, 02:52 AM | #6 | Member Join Date: Oct 2013 Location: usa Posts: 39 | Thanks for the responses guys. I've replaced the valve cover gasket along with the spark plug tube seals a couple months ago. I've checked the valve cover area several times and it's definitely not coming from there. I was suspect of the oil pan too. I'll check the oil filter housing gasket as some of you mentioned on the next oil change (it's coming up very soon). As for the PCV ... I've left it alone since buying the car from the previous owner. The PCV is plugged (basically disconnected from valve cover and plugged/blocked), and the the valve cover breather is vented to the atmosphere through an oil catch can. This would seem ideal, but maybe this is causing pressure in the crank? I wish there were more info on the PCV system for these cars. I searched to the end of the internet and found little to no information regarding the PCV system on the M42/M44 engines. All the information I found only talks about the single vacuum hose from the valve cover to the PCV on the intake manifold. You would think there is more to the PCV system than just that? *shrug* Last edited by showaski; 09-13-2014 at 03:00 AM. | | | 09-14-2014, 10:39 PM | #7 | Member Join Date: Oct 2013 Location: usa Posts: 39 | Will the oil housing seal cause the oil to leak onto any hot or warm surfaces? I'm just wondering because I can easily see and smell smoke from oil burning on a hot surface. It flows from under the hood and around the car from underneath. | | | 09-15-2014, 03:49 PM | #8 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Clean up the motor. It will help identify the leak. And I smelled oil burning from my oil housing leak. __________________ ...steven BMW CCA #146825 1996 BMW 328ti • 2003 MINI Cooper S • 2016 M235i www.bmwcca.org | | | 09-15-2014, 10:15 PM | #9 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Ok I PM'ed the solution. For board members this is a boosted car with the CCV valve blocked. My new Metric motor leaked from all seals without a triple PCV system installed. The solution is using 3 one-way valves so the engine has vacuum during all conditions except under boost. When the engine goes into boost the CCV needs to be blocked because we don't want boost being blown into the crankcase plus the crankcase needs to be open to atmosphere so it can dump "blow-by" vapor. Without this system on my car I would lose over a quart of oil per tank of gas. With the system I lose maybe 1 quart per oil change (7,500 miles) and that is turbo seal leak since I'm running too much oil pressure/flow to the turbo. I'm going to fix this when it cools off outside. Last edited by xxxJohnBoyxxx; 09-15-2014 at 10:25 PM. Reason: spelling | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |