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Gents, I am confused about the relationship between oil level and oil pressure. If oil pressure is only affected at 'below oil pick-up level' and above 'maximum level' and unaffected within correct range, why is oil pressure higher after overnight parking at start-up and starts dropping after a few minutes of driving (even at with proper oil level)? I would like to understand if this is sign of a problem (maybe incorrect oil pressure sensor?) -> This also brings me to another confusion that oil pressure has no influence on AOS. High oil pressure means more oil being sprayed about in crank case so shouldn't this create more oil fumes for AOS to handle? I had a short 5 second 'above 5000 rmp' run last weekend sign of smoke reappeared. (and immediately gone when I lifted off the throttle). This is when the oil level is just at maximum mark (measured 2 hours after a run). So I am yet to dig in deeper to resolve this problem. One of the options I am considering is adding a separate Oil Catch Tank. Anyone with this experience, I seek for your advice. Thank. for your supports.
You may still have oil in the intake system, which is slow to come out, and a drop creates a cloud of smoke. As RFM stated, do not run the oil level high, that will only worsen your problems. Thanks for the advice. should I wipe out the oils from intake routes or should I leave it till the oil eventually is removed through time? Doing so is quite a bit of work as you would need to remove most of the intake system to do it. It would get rid of the smoking issue, but not knowing your expertise level, you need to think about both the effort to do it and the chance of ending up with vacuum leaks if you don't do it correctly. I have some DIY experiences such as starter motor replacement which involves removal of throttle assembly but I have not disassembled the whole intake system. I might as well have it cleaned out professionally. Either way if this resolves the problem I am more than willing to spend some. Thank you.
Thank you for the tip. I will remove the oil as recommended. In the mean time, I wonder if lower oil level closer to mimimum can relieve this smoke to some extent. As Moderator marked, if oil pressure is dependant on rpm but not oil level, this shouldn't worsen lubrication performance to my understanding or else? Your advice is much appreciated.
You may still have oil in the intake system, which is slow to come out, and a drop creates a cloud of smoke. As RFM stated, do not run the oil level high, that will only worsen your problems. Thanks for the advice. should I wipe out the oils from intake routes or should I leave it till the oil eventually is removed through time?
I will do that. Thanks. out of curiocity. My understanding has been that oil pressure depends on oil level as well. If not so, does oil pressure stay the same regardless of oil pressure before it drops below a level where oil pump cannot inhale the level?
I replaced AOS about 6000miles ago in my 2001 C4 with 64k miles. But I still get smokes from tail pipe even after a short high rpm run above 5000 rpm (just for a few seconds). I keep my oil level higher than maximum in hopes of relieving IMS problem since I read that low oil pressure can cause premature IMS bearing failure. I was wondering if this is causing an overload on AOS resulting in the smoke. Your advices will be much appreciated.
It would be much appreciate if someone can help me find the correct part number for the water hose in the picture highlied in red line. · Model year: 2001· Body Style: C4· Transmission type: 6 speed Manual· Country: US
triling replied to 1999 996C4's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)It looks like Raby Engine Development is not up to the LN Engineering's experience. LE Engineering do offer a retro-fit kit for dual row IMS bearings which do not require engine disassembly according to them. check this out. http://www.imsretrofit.com/what-ims-do-i-have/
I could use some help from you all. I'm trying to replace MAF sensor in my car (2001 Boxster S) as it has been identified as the problem. When I tried to purchase the MAF sensor though, I found out that there are 2 types of MAF sensor for my car. One for E/accelerater, the other for 'without' E/accelerator. Can you help me identify the MAF sensor type so that I can purchase the right sensor? Thanks!!