[ash6r]

Recently whenever I drive with the AC on and in traffic I can smell something burning. Not sure if its oil since my oil level has not decreased in the last 1000 miles(1000 miles ago I did the OFHG and the oil cooler gasket, oil poured to full). I have taken the engine cover off and have seen some pools of oil near the front of the valve cover but it could be because of my shaky hands when pouring oil in last time. The back of the valve cover has no oil pretty much.

Another thing to note is my idle increases over time as the engine warms up. After the cold start it sits at around 600-700 rpm, then it eventually goes up tio 900-1000rpm. This is only at idle. When I dip the clutch in it goes down to the 700-800 rpm range. I dont notice any misfires/stuttering when doing pulls or cruising around. Somtimes after the cold start the engine does stumble a little as its coming to 600-700rpm but then goes back to being smooth. I've done some logs and here are the results:

(3rd gear pull on a slight uphill gradient)
https://datazap.me/u/ashe82/1195?log=0&data=13-14-15

(the very first pull in this was done in 2nd gear, the rest is just me driving)
https://datazap.me/u/ashe82/15052022-135i-2010-n54-6mt

I also got a letter recently saying I need to send the car in for a recall of the heating element. Ive booked it in for next week but just wondering if I should also expect to do my valve cover at the same time.

Details of my car:

BMW 01/2010 135i N54 6MT
120k miles
Completely stock as far as i'm aware
Stock tune
Run only on 99 RON E5/E0 (93 oct for US people)
Index 7 injectors(not sure if they have been replaced ever)
Previous dealer old me that the HPFP might have been replaced but not sure, logs seem okayish.


Service History
Timing belt, pulleys, OFHG, oil cooler gasket replaced at 119k miles
Oil, Oil filter, Spark plugs replaced 115k miles
Boost solenoids at 114k miles

Bought car at 108k miles

Services done before my purchase:
Oil and filter replaced every 10k miles since 40k miles
Ignition coils, Water pump, timing chain, fuel filter?(thought these didint have fuel filter?) replaced at 99k miles
Transmission oil at 84k miles
No other service receipts

[ash6r]

Bump

[TurboTom]

The oil smell is probably coming from the pooled up oil in the valve cover area. Clean it up as best you can and give the car a few heat cycles to burn the rest. If it appears that it’s filling up it’s obviously leaking. If it stays empty but there’s still a smell you should look for other leaks. Could be a turbo oil line leaking on the downpipe or one of many other things.

[ash6r]

Originally Posted by TurboTom

The oil smell is probably coming from the pooled up oil in the valve cover area. Clean it up as best you can and give the car a few heat cycles to burn the rest. If it appears that it’s filling up it’s obviously leaking. If it stays empty but there’s still a smell you should look for other leaks. Could be a turbo oil line leaking on the downpipe or one of many other things.

Ill try and clean it the best I can. Theres no smoke coming out the exhaust so maybe not the turbos?