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1999 e300 oil leak
my car has an oil leak that is driving me crazy
we cannot see where it is coming from today we were working on a water system gasket that is to the right of the water pump and we have a lot of the stuff out of the way and still cannot see where it is must be low on the engine and now we can see it is definitely coming from somewhere low on the passenger side area, that is where the most oil is but we cannot see it from underneath the 2 trans lines right there have a good bit of oil on them and that large hose underneath/next to them but it is not trans fluid, definitely oil mech is thinking possibly blow off oil-not sure that is the right term?? i do have the egr delete mod and i read on some of the 06 cdi stuff some of them were possibly having blow off oil with their egr delete mods anyway it is not like i have to add much oil often but i hate a messy motor and would like to solve this problem if possible any ideas would be greatly appreciated thank you
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Courtney 2006 E320 CDI 2008 ML320 CDI |
#2
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Follow the oil from gravity.....
Post up several pictures, and let's see where the oil leads us to?
I am assuming your '99 E300 still has it's (3) diaper panels - side-to-side / front-back (green panels) underneath the radiator/engine back to the transmission? If your '99 has these panels - far less air-flow at speed will be pushing oil back across surfaces. |
#3
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i think i should get to the shop tomorrow before much stuff gets put in and i will try and get pics
i do not have any of the anti noise pan things, that is the next project, would be nice to get this oil leak solved before i put those on and get them messy this does not seem to blow back a whole lot, at least from what i have seen, seems it is to the front of the engine more, but i will look under there better tomorrow
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Courtney 2006 E320 CDI 2008 ML320 CDI |
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If it's in the shop and on a lift, your mechanic will be doing the tracing / sourcing of the liquid (oil?) anyway. Don't assume the worst at this time....
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#5
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we have been looking each time it is on the lift for something else and we cannot see where it is coming from, either from the top or bottom
it has not been the main focus whenever we have been working on it but we have been looking i will clean the engine again and start climbing under it and look for the top and see if i can narrow down the area it is not a big leak, very small actually but i just dont like the dirty engine hmm i was not thinking it was a big deal, just a small seal somewhere, is there a particular seal i should be concerned with that is not going to be good?
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Courtney 2006 E320 CDI 2008 ML320 CDI |
#6
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There's a lot of stuff right there at the front under the engine, between the radiator and the front of the engine on a '99 E300 - you've got the cross-pipe intercooler tube for the turbo shooting compressed air over to the intake on the left upper side of the engine. So, there's a lot of peeking and perhaps a mirror and holding of a flourescent trouble light to contend with too, to see anything down there. It's tight-quarters for sure on our car's front engine cavities.
Might be something - or might be nothing....... My '99 E300's turbo sprung an oil leak, thereby filling the intercooler tube with engine crankcase oil when I was on the road working down in South Louisiana the year after buying the car new. It was still under warranty and spent two weeks at the Mercedes-Benz dealer in Baton Rouge, LA. waiting for a new turbo from MB. In that episode my car's diaper/green panels were drenched with oil, and warranty bought me new ones the dealer replaced at that time too. The underside panels aren't necessary to have on the car, but they sure let the engine cavity on the lower-end stay very pretty and clean. This is the cleanest car I've ever owned and able to keep it pretty and clean top to bottom, and front to back. It's been 3+ years since I've had the panels off to perform an oil change on the car, (don't hardly drive the car at all for 10 years+) and it's about due, 10K miles on the Mobil 1, so I'll look around to see if I have anything like oil down there. Hope not. |
#7
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On my car, the joint between the up pipe and the intake manifold leaks a little and it sprays the blow by oil all over the place. This is enough to make it look like it has another more conventional leak.
I'd guess it drips about 5 drops or so every time I park.
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#8
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Mine has a seep near the exhaust manifold. It's a slow leak and likely a blow-by leak. It also winds up in the tube going to the intake manifold.
Hope you find your leak.
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2013 Volkswagen Jetta Hybrid SEL Premium (Sparky) http://badges.fuelly.com/images/smallsig-us/193500.png It's a car not a science experiment! Open the throttle! |
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ahhhhh, i think i found it !!!!
i took some pics this morn but have not had time to load them on the ipad anyway we got done at the shop and i took it over and washed the engine again , so i have driven about 15miles and i just got under it the big hose on the bottom right front of the motor , next to the 2 small trans lines has a hole in it, and i think it is coming from there what is the name of that big hose? and i guess i should ask if that hose should have oil inside it?
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Courtney 2006 E320 CDI 2008 ML320 CDI |
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Quote:
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#11
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well blah, i was excited i found the leak, but not so much now
so there should be no oil in it at all? not even a little bit of blowby oil or whatever they call it? i just drove it about 125 miles and rechecked down there and i am now sure that is where it is coming from, but there is hardly anything there right now and i dont have to put any oil in between oil changes, or maybe 1/4 quart - but i change closer to 8000 i will go over it with him and see what he says i have an ex that might be able to rebuild it if it is really 2 grand maybe i should try to pick up a used one from someone or the junkyard just to have it in case it goes out on a trip
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Courtney 2006 E320 CDI 2008 ML320 CDI |
#12
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1999 e300 oil leak
Quote:
Do you remember if it was just turbo seals or what? One of my coworkers did the R&R on his turbo seals and all it cost was the removal time and the cost of the seals (under $100 IIRC). Although his car was a W124, I suspect that the W210 w/OM606 would be much easier. The turbo is much easier to remove from these newer cars. I ask, because I have oil in the air inlet tube that connects to the intake manifold.
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2013 Volkswagen Jetta Hybrid SEL Premium (Sparky) http://badges.fuelly.com/images/smallsig-us/193500.png It's a car not a science experiment! Open the throttle! |
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Quote:
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ok, i think i should do some research on r and r for the turbo and be prepared to have that fixed in the future
will see what my mechanic says on this and if he knows someone who can rebuild it
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Courtney 2006 E320 CDI 2008 ML320 CDI |
#15
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x2 on that. This approach tends to save you money.
I know that I've been operating this way (oil seepage & in the air pipe) for 6+ years now. I don't think that it is all that critical. It just costs an extra quart of oil every 8-10k miles.
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2013 Volkswagen Jetta Hybrid SEL Premium (Sparky) http://badges.fuelly.com/images/smallsig-us/193500.png It's a car not a science experiment! Open the throttle! |
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