low oil pressure

Find out more about the BMW 1 Series E81, E82, E87, E88.
Manufactured from 2004 to 2013

Moderators: Rich196, babybmwadmin, marco_polo, Producethis, Lambster

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

low oil pressure

Post by b754984 » Mon Jan 22, 2018 12:14 pm

Hi everyone,

I have been recently getting the red "low oil pressure" light on and off since last 2 weeks.

Some more info:

- low oil pressure when engine is warm, mainly after coming off the highway + idle, never when engine cold
- no abnormal engine noise
- no oil leaks found
- oil pressure sensor is working ok
- oil has been changed (5w30 and 5w40) - no avail
- car has been running fine otherwise (after told I could drive it)

At this stage I catch myself wondering if this could be an oil pump or even the symptoms of a major engine problem.

- I've been told it is unlikely to be an oil pump otherwise the car engine would have been damaged by now, is it so?
- Sludge. Should I have been told about this after the oil changes?
- Any efficient tests/checks which can be performed? Does the ECU provide any helpful info for this kind of issues?

I have an appointment soon but don't want to just come home with "an oil change and good luck" once again. :|

thanks!

BMWBrad
Enthusiastic Member
Enthusiastic Member
Posts: 568
Joined: Thu Nov 28, 2013 8:40 pm

Re: low oil pressure

Post by BMWBrad » Mon Jan 22, 2018 2:43 pm

Is your car the 2.0 Petrol N43? The timing chains stretch on these, and the chain guide can break and fall into the sump which blocks the oil pick up.
Get it checked ASAP at a garage
Pampered E81 130i
(Alpinweiss, Black Boston, Cruise, Adaptive Xenons, Pro HU w/BT, USB & DAB, F&R PDC)
BMWPE- BMWP SSK- BMWP Handbrake- BMWPV1 Steering Wheel- Alcantara Binnacle- L7 Mids & Tweeters

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Mon Jan 22, 2018 5:43 pm

It is actually a 1.6 N43 petrol, time chain has been replaced recently - hopefully they did a good job there.

Jack79
Experienced Member
Experienced Member
Posts: 209
Joined: Sun Mar 12, 2017 7:19 pm
Location: Poland

Re: low oil pressure

Post by Jack79 » Mon Jan 22, 2018 8:33 pm

The chain guide wasn't broke? If they fall into the sump which blocks the oil pick up like BMWBrad wrote.

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 50760
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: low oil pressure

Post by marco_polo » Mon Jan 22, 2018 8:39 pm

From the symptoms, it sounds like an internal leak to me. Relatively oil-tight when the oil is cold/thick, but seeps past seals/pump when hot/thin.

BMWBrad wrote:
Mon Jan 22, 2018 2:43 pm
Is your car the 2.0 Petrol N43? The timing chains stretch on these, and the chain guide can break and fall into the sump which blocks the oil pick up.
Get it checked ASAP at a garage
I'm not saying you're wrong, as it's a common N43 cause, but wouldn't a blocked oil pick-up be just as bad (or worse) when cold?
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

Please help the Mod's by using the report [ ! ] button where appropriate

BMWBrad
Enthusiastic Member
Enthusiastic Member
Posts: 568
Joined: Thu Nov 28, 2013 8:40 pm

Re: low oil pressure

Post by BMWBrad » Mon Jan 22, 2018 8:43 pm

Good shout Marco, although I’ve seen them to bring on the warning in all conditions.
I’ve also known an oil pump to fail on these, but broken guides seems most obvious to me.
Pampered E81 130i
(Alpinweiss, Black Boston, Cruise, Adaptive Xenons, Pro HU w/BT, USB & DAB, F&R PDC)
BMWPE- BMWP SSK- BMWP Handbrake- BMWPV1 Steering Wheel- Alcantara Binnacle- L7 Mids & Tweeters

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Tue Jan 23, 2018 2:49 pm

Thank you guys. I'm looking forward to finding out what's going on here.

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Fri Jan 26, 2018 7:48 pm

Well, took to the dealer today for a general check and among other things I was given a quote of $ 500 to open the engine and check for chain guide debris, sludge, etc

I’m happy to get them to check it but if there is a chance the engine may already be showing signs of damage I’m not sure it would be worth all the trouble and money spent on digging it further.
Is there any cost beneficial way to check for related engine issues at this stage?
If there is an engine problem I have the possibility of returning the car.

I bought the car recently and the thought of spending 500 $ just for a “check” is already bad enough, let alone the cost of a potential fix for it. Not really sure what to do...

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 50760
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: low oil pressure

Post by marco_polo » Fri Jan 26, 2018 7:52 pm

If you can reject it, reject it.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

Please help the Mod's by using the report [ ! ] button where appropriate

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Fri Jan 26, 2018 7:59 pm

I could but I dont know yet if there is an engine problem, so I thought that perhaps would be wiser to check that first if cheaper - and possible at all.

Thats why I’m curious if there is anything that could be done to indicate that other than taking the engine apart straight away.

User avatar
Octavius
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 19424
Joined: Tue Jul 26, 2011 1:51 pm
Location: In The Land Of The Romps

Re: low oil pressure

Post by Octavius » Fri Jan 26, 2018 10:59 pm

Could you not drop the sump off ?
DEFECTED TO SKODA.

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Sat Jan 27, 2018 9:27 am

I would really like to but I personally feel unqualified for this kind of work, at least at the moment. :-/

User avatar
b754984
Junior Member
Junior Member
Posts: 13
Joined: Mon Jan 22, 2018 11:12 am

Re: low oil pressure

Post by b754984 » Wed Mar 28, 2018 10:57 am

After a long time at the garage, the car came back. The cause of the problem was a bad oil pick up pipe.
I had a go with the car today under the same circumstances and the low pressure light is indeed gone.

User avatar
Dan116i
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 9392
Joined: Sat Jul 03, 2010 6:47 pm
Location: Surrounded by Carbon

Re: low oil pressure

Post by Dan116i » Wed Mar 28, 2018 5:53 pm

I had this issue just before selling my N43 116i... didn’t want to wait and find out what was causing it, so chopped it in for a 130i
Now: 2006 130i with even more goodies ;)
Gone: 2008 116i with goodies :)

Image

User avatar
Toed64
Enthusiastic Member
Enthusiastic Member
Posts: 1883
Joined: Thu Apr 23, 2015 10:49 am

Re: low oil pressure

Post by Toed64 » Sat Mar 31, 2018 10:21 am

marco_polo wrote:
Fri Jan 26, 2018 7:52 pm
If you can reject it, reject it.
This^^

b754984, are you in UK? If you are and you bought the car recently from a dealer or motor trader, you should be able to reject the car, or insist that the selling dealer fixes the problem. Do you have any kind of warranty?

One passing thought - many years ago, I did and oil service on my girlfriend's Mini. When I started up, I was horrified to find that the oil pressure was low (indicating only about 20psi at idle) and when the engine was hot, the oil light was flickering at idle with the pressure gauge hardly indicating anything.

I stressed about it for half an hour and decided to drop the oil out again. The engine was still hot when I drained the oil and I noticed that it was nearly as thin as diesel fuel when it was pouring out. Consequently, I refilled with a more viscous oil - Duckhams 20w50 (rarely seen these days) and normal oil pressure was restored.

This is not likely to be your problem, but it's just possible that whoever serviced it recently used poor quality, very lightweight oil. You could try getting an oil service using a 5w40 LL04 to see if that fixes the issue.

Dan116i, I hope you declared the fault when you sold your 116i? I'm sure that Ian didn't take your car in px for the 130i. Personally, I'd rather sell a car for spares or repair, or scrap it, than stitch up the buyer.
2008 E81 130i
2010 E82 135i - now sold

Post Reply

Return to “E81, E82, E87, E88 (2004-2013)”