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My review for
2011 bmw 135i n55 e82
bought 2017 39,000 miles
MOST common issues with the 135i N54 & N55 engine (what to look out for):
(N54) Turbo Wastegate Rattle - Sypmtoms include: Rattling noise from front end especially at idle.
N/a
(N54 & N55) High Pressure Fuel Pump Failure
55,000 miles January 2020
(N54 & N55) Electric Water Pump Failure - Symptoms include: Car goes into limp mode, recommended to be replaced at 60k+ miles
70,000 June 2021
(N54) Carbon Buildup/Deposits on Valves - Symptoms include: Rough idle, decreased performance. Walnut blast for fix ($300-$600 depending on shop/location)
N/a
(N54 & N55) Oil Filter Housing Gasket (OFHG) Failure - Symptoms include: Oil leak on front of engine around filter housing, losing oil over time, oil pooling on ground under car or on skid cover. Replace gasket for fix ($300-$900+ depending on shop, DIY possible for mech-inclined individuals)
(N54 & N55) Windshield Washer Tank Leak - Symptoms include: Fluid runs low often, pool of fluid under car after filling tank. (Potential DIY?)
55,000 miles January 2020
Changed oil every 4K miles
Spark plugs and coils at @60k miles
Add mhd super license at 70k turned on burble for 10k miles then off at 80k
Bonus recommendations:
Mandatory buy burger tuning sport oil cooler oil only $60
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