Misfire just started
#11
JB+ wouldn't kill your plugs like that. Original plugs. BMW changes them every 100k.
I am willing to bet you need a carbon cleaning. I got my car at 52k, put 25 on it never had a carbon cleaning. NEVER.
#12
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My Ride: 2009 BMW 535i under construction
I've been having this same problem for the past two weeks. CEL comes on almost every time once the fuel level goes below 1/4 tank. Misfires in the 4 and 6 cylinders. Decided today to do all plugs and coils since they were never done and my car is at 66k miles.
#13
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My Ride: Alpine E60, '09 535i-Premium, Sport and Comfort Access PackageMods: Lux H8 V3 Angel Eyes, Weisslicht LED license plate lights, Interior LED lights, RPI Scoop, Matte Black Grills, Smoked LED side markers & side reflectors, 35% tint all around, and a 3
The BMW replacement interval for spark plugs for the N54 engine is 45k miles (usually +\- 5k).
#14
Is it really? Its half as bad then.
I went to Rallye BMW with about 60k on my clock and bad injectors and they said they were going to change the plugs because they were never done and weren't due for a while.
It was then when I decided that I was taking maintenance my car.
I went to Rallye BMW with about 60k on my clock and bad injectors and they said they were going to change the plugs because they were never done and weren't due for a while.
It was then when I decided that I was taking maintenance my car.
#15
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My Ride: 2008 E61 LCI -Sport,Premium,CW,NAV
I was experiencing similar issues (misfire/stumbling under acceleration) on my 08 535xi (82k), and thought for sure it was a bad injector. Brought it in, and they diagnosed it as carbon buildup on the intake. They walnut blasted the intake manifold and replaced the plugs, and the car runs like new. Carbon cleaning was covered under the 82k mile emissions warranty (?) and plugs were covered under extended maintenance. Based on the service records, it looks like they did the same thing around 42k miles. Definitely seems to be something that is required every 45-50k.
#16
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My Ride: Alpine E60, '09 535i-Premium, Sport and Comfort Access PackageMods: Lux H8 V3 Angel Eyes, Weisslicht LED license plate lights, Interior LED lights, RPI Scoop, Matte Black Grills, Smoked LED side markers & side reflectors, 35% tint all around, and a 3
Is it really? Its half as bad then.
I went to Rallye BMW with about 60k on my clock and bad injectors and they said they were going to change the plugs because they were never done and weren't due for a while.
It was then when I decided that I was taking maintenance my car.
I went to Rallye BMW with about 60k on my clock and bad injectors and they said they were going to change the plugs because they were never done and weren't due for a while.
It was then when I decided that I was taking maintenance my car.
I was experiencing similar issues (misfire/stumbling under acceleration) on my 08 535xi (82k), and thought for sure it was a bad injector. Brought it in, and they diagnosed it as carbon buildup on the intake. They walnut blasted the intake manifold and replaced the plugs, and the car runs like new. Carbon cleaning was covered under the 82k mile emissions warranty (?) and plugs were covered under extended maintenance. Based on the service records, it looks like they did the same thing around 42k miles. Definitely seems to be something that is required every 45-50k.
#17
You guys got good BMW SA. The ones I experience are cheap as hell until its on your dime. I got quoted a thousand for carbon build up. 200 for brake flush, and 250 for carbon filter changes. It seems like they get comprehensive once the warrantee and maintenance plan runs out.
#18