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Discussion Starter · #1 ·
Hello everyone,
Just today I have noticed smoke coming out of the front of my e46 316i 1.9L engine. My mom, who frequently drives the car told me that she had been smelling some funny odors in the cabin for a week now. Anyways, I went ahead and checked the oil cap and dip stick as a result and there it was- milky residue on both of them. I know that there is a possibility of a blown head gasket, but I am wondering if there is any other possible issue with it that I or my mechanic should check out. The car had thrown out an engine coolant light a few weeks ago aswell, but I filled it up immediately and the level hasn’t changed since. Temperatures are fine with no engine light (ever). I want to also add that this car is our house pet of sorts, it has been in our possession for 17 years now and has never had any problems with it always being serviced on time or even prematurely and at a BMW specialist. It’s only done 147000km/91000miles with it being in almost mint condition. We are definitely going to get it fixed, even though it might seem financially unreasonable. So, any suggestions as to what I should suspect or check out? Any help would be appreciated!
Kind regards,
D
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It can also moisture in oil, due of short journeys. Have a look at left side of valve if there us any oil leaking on exhaust.....
 

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For long term yes, i mean large (moisture) amount. A small amount should be okay, it will dissapear after few long journeys.
 

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As coolant had also dropped along with Mayo on dipstick I would be fearing the worst, with condensation I have known it on the cap but not normally on the dipstick aswell.

Does that engine have a coolant/oil heat exchanger? If it does that could also be a possibility
 

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Will a gas test show a water to oil failure of gasket though,only really show combustion to cooling system failures with a gas test
 

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Discussion Starter · #8 ·
As coolant had also dropped along with Mayo on dipstick I would be fearing the worst, with condensation I have known it on the cap but not normally on the dipstick aswell.

Does that engine have a coolant/oil heat exchanger? If it does that could also be a possibility
I am fearing the worst aswell, the funny thing though is that the coolant seems totally fine, only the dip stick and cap seem to have it. Referring to your question, i have no idea... I spoke to one of the best BMW specialists here in my country over the phone and he told me that the fault is probably a buildup of condensation due to the car being driven only on short distances (2km/1mile a day) to work and back. Said i should take it out on a longer trip, bit i will wait to see what my local mechanic tells me.

Get a gas test done easy enough to do and will confirm the gasket or not.
I will probably have a gas test done, even if both of the mechanics tell me that its just condensation, just to be sure.
 

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Clean dipstick and oil cap have good ride. Have a look few times and you know.

If engine temperature is normal.... take your conclusion...

Coolant level problem, could be a leak in coolant system. As very know problem for E46 cars.
 

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Discussion Starter · #10 ·
Thank you everyone for your replies, they were really helpful, but we now found out that the milky residue is just because of the short trips and condensation build-up and the smoking is present due to some oil leakage onto the exhaust system and it burning. We have an appointment with our mechanic on Monday for him to fix the leak, which is going to be an easy fix at almost no cost. Once this is done i will take the car on a nice road trip to give it a breath of fresh air. I am happy that i posted on this forum, but i hope i never need to again to ask about any car issues :D
Thanks again,
D
 
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