Cold start problem

Kevink92 · 11-23-2012, 04:55 PM

FYI, this may be useful...

So my 335i is out of warranty now (4 years old and 52,000 kms) and I start to get the cold start problem of the engine shaking. After about 50 metres or so, it settles down and runs fine - until the next day. I thought it might be bad fuel or a blocked injector, so I put in a bottle of cleaner and topped up with 98. It didn't make any difference at all.....

I then checked out here that a SIB exists for faulty injectors, so I was hoping that this was the problem and that BMW would fix it. I printed out the SIB and booked the car into the dealer (only one in Adelaide).

I must say they were faultless, they acknowledged the known problem and replaced 2 bad injectors for no cost. In fact they brought up the SIB on their computer. Aparently only certain injectors are affected so they didn't replace the others.

I hope this helps, I dread to think how much this would have cost.......

Jin-ActiveMotorwerke · 11-24-2012, 05:21 AM

They have recall on the injectors for a while now.
Injectors gets scan and the database tells them which to replace.
From memory, each injector cost about $400.
Your exact same sympton might be cause by the high pressure fuel pump which is prone to fail on N54s.

Kevink92 · 11-25-2012, 03:03 PM

Good point. I never got any warning lights, long cranks or anything, just the shaking. I guess I was just concerned that they would deny the known problem and charge me. I've had a couple of other common issues that they fixed during warranty, but didn't admit that they were known problems. Maybe, it takes a little longer to get through here due to the low numbers of BMW's compared to NSW and VIC.

11-23-2012, 04:55 PM	#1
Kevink92 New Member 0 Rep 11 Posts Drives: '08 335i E92 sport Join Date: Feb 2010 Location: Adelaide iTrader: (0)	Cold start problem - engine shaking FYI, this may be useful... So my 335i is out of warranty now (4 years old and 52,000 kms) and I start to get the cold start problem of the engine shaking. After about 50 metres or so, it settles down and runs fine - until the next day. I thought it might be bad fuel or a blocked injector, so I put in a bottle of cleaner and topped up with 98. It didn't make any difference at all..... I then checked out here that a SIB exists for faulty injectors, so I was hoping that this was the problem and that BMW would fix it. I printed out the SIB and booked the car into the dealer (only one in Adelaide). I must say they were faultless, they acknowledged the known problem and replaced 2 bad injectors for no cost. In fact they brought up the SIB on their computer. Aparently only certain injectors are affected so they didn't replace the others. I hope this helps, I dread to think how much this would have cost.......
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11-24-2012, 05:21 AM	#2
Jin-ActiveMotorwerke Private First Class 5 Rep 126 Posts Drives: BMW E46 330i Join Date: Apr 2012 Location: Melbourne iTrader: (0)	They have recall on the injectors for a while now. Injectors gets scan and the database tells them which to replace. From memory, each injector cost about $400. Your exact same sympton might be cause by the high pressure fuel pump which is prone to fail on N54s.
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11-25-2012, 03:03 PM	#3
Kevink92 New Member 0 Rep 11 Posts Drives: '08 335i E92 sport Join Date: Feb 2010 Location: Adelaide iTrader: (0)	Good point. I never got any warning lights, long cranks or anything, just the shaking. I guess I was just concerned that they would deny the known problem and charge me. I've had a couple of other common issues that they fixed during warranty, but didn't admit that they were known problems. Maybe, it takes a little longer to get through here due to the low numbers of BMW's compared to NSW and VIC.
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