[mrbrett]

They said I had a bad spark plug on the #4 cylinder, so they replaced it. So I am going to pickup my car today and we will see if I continue to have the long cranking issue. My fuel pump has already been replaced once and I was sure that was the problem. They kept it over night and said it fired right up in the morning with no long cranking... Wanna take any bets that it's the fuel pump?

[Hoog_23]

Mines been in twice in the last 2 weeks for long cranks, they've had it a week now. First visit they couldnt replicate it so I took it back there on Monday. Apparently something in the low pressure system. I have a scanner so I know they arent lying. My hpfp was already replaced once. I was supposed to pick it up today but got some story about BMW's computer being down so they couldnt program the car.

[kyleb350]

If your situation is like mine, they probably can't replicate it because it only happens on cold starts. Tell them to leave it overnight and examine starting it in the morning.

[Hoog_23]

Mine did it when hot after driving 50+ miles.

[cstmx_ryder]

wouldn't you get misfire codes if the spark plugs are faulty?

Either that or you will experience it during spirited driving. Anything over 100mph you'll start to feel the car getting stutters/choked up, you'll definitely know when that happens.

[mrbrett]

Well I went to start it up this morning and sure enough long crank! Guess I will call the dealer tommorow and complain.

[mrbrett]

Originally Posted by cstmx_ryder

wouldn't you get misfire codes if the spark plugs are faulty?

Either that or you will experience it during spirited driving. Anything over 100mph you'll start to feel the car getting stutters/choked up, you'll definitely know when that happens.

I actually did have a couple stutter episodes on passing manuevers on the freeway, and they said it had some codes. I just assumed it was the HPFP... It seems to drive a bit smoother now. The fuel pump is still going out though, and they just don't want to replace the thing.

[v2bling]

Same with my dealer. They dont want to change the HPFP, and they know I spent 70k on it. :X

[David 12]

Bring this with you when you go in to complain:

SI B 13 07 09
Fuel Systems June 2009
Technical Service

This Service Information bulletin supersedes S.I. B13 07 09 dated June 2009.
designates changes to this revision
SUBJECT
N54 - Diagnosis for "Long Crank" Complaint
MODEL
E90, E92 with N54 produced from 06/06
E93, E60, E61 with N54 produced from 03/07
E82, E88 with N54 from start of production
E71 X6 with N54 from start of production
E89 Z4 with N54 from start of production
SITUATION
The customer may complain of:
Excessive cranking time before the engine starts (5-6 seconds) on a cold start or after a hot soak.
In most cases, diagnosis shows fault code 2FBF stored with SES lamp illumination.
CAUSE
Possible causes may include:
Failure of an electric fuel pump or a clogged fuel filter
Defective fuel pressure check - valve/fuel pressure regulator
Failure of the low or high-pressure sensors
Internal failure of a High-pressure Injection Pump (HDP)
Failure of a volume control valve
Intermittent electrical connection problem (wire and/or connector) in the fuel delivery system.
CORRECTION
Use the current ISTA diagnosis software.
Prior to performing all applicable high/low-pressure pump ISTA test plans, IT IS NECESSARY TO CHECK the residual pressure in the low-pressure fuel system.
The test module "Pressure Retention Test on the Low-pressure Fuel System" will be incorporated into ISTA 2.14, and is planned for release together with the measurement interface IMIB in July of 2009.
Until ISTA 2.14 is available, use the procedure described below to test the residual pressure in the low-pressure fuel system.


The engine must be cooled down before the test (coolant temperature below 40° C).
Access the quick-disconnect coupling in the fuel feed line. On E82, E88, E89, E90, E92 and E93 vehicles, it is located underneath the car, at the bottom of the driver's side wheel housing. On E60, E61 and E71 vehicles, the coupling is located in the engine compartment, on the driver's side next to the B+ terminal.
Disconnect the fuel supply line and install special fuel line plug tool 135 161 (P/N 83 30 0 496 565), item 1, into the fuel hose from the high-pressure side of the system (item 4 on the next illustration).


Install three-way adapter tool 135 270 (P/N 83 30 0 491 310), item 1, into the supply line from the fuel tank side.
Connect the properly calibrated mechanical pressure gauge, item 3 (e.g., P/N 83 30 0 491 260 - a pressure gauge from K-L-Jetronic special tool kit P/N 83 30 0 491 259) into three-way adapter tool 135 270 (item 1).
Plug the open end of the three-way adapter tool using special tool 135 162 (P/N 83 30 0 496 565) – item 2 on both illustrations.
In this configuration, the low and high-pressure fuel systems are separated and sealed. The residual pressure measurement will be performed only on the low-pressure side.
IMPORTANT NOTE:
Three-way adapter tool 135 270 (P/N 83 30 0 491 310 - M62 fuel pressure adapter hose), and the coupling plugs P/N 83 30 0 495 565 (SI B04 16 09) were previously sent via the Automatic Tool Shipment Program.
While observing the fuel pressure, activate the electric fuel pump for 20 seconds using ISTA and the component activation function (after the vehicle test, select: Control unit tree; then DME; Call ECU functions; Component activation; and Fuel pump).
Immediately after electric pump activation, the pressure must reach at least 4.75 bars. The residual fuel pressure, 10 minutes after the fuel pump was deactivated, must be above 3.75 bars.
In case the minimum threshold of 4.75 bars was not reached, further diagnose the low-pressure system using test module B1214_DI6KNDR, Low-pressure Fuel System (possibly defective electric fuel pump or fuel filter/pressure regulator).
If the minimum threshold system pressure exceeds 4.75 bars and the residual pressure exceeds 3.75 bars after 10 minutes, proceed to step number 15.
If the minimum threshold of 4.75 bars was exceeded, but the residual pressure test failed (pressure dropped below 3.75 bars after 10 minutes), then the fuel pressure regulator or the pressure check valve may be defective.
In such a case, the following components need to be replaced:
E82, E88, E90, E92, E93 – Left-hand side fuel filter with pressure regulator (P/N 16 11 7 163 295)E89 (Z4) – Right-hand side fuel supply unit (P/N 16 11 7 210 635) and fuel filter/pressure regulator kit (P/N 16 11 7 168 284)
E60, E61 - Right-hand side fuel supply unit (P/N 16 14 7 174 893) and fuel filter/pressure regulator kit (P/N 16 14 7 174 895)
E71 (X6) – Left-hand side fuel supply unit with fuel sensor (P/N 16 11 7 212 588).
In case the residual low-pressure system test did not clearly indicate a root cause, proceed with test module B1214_DI6KNDR (Low-pressure Fuel System).
This test module may be accessed in ISTA using the following path: Activities; Function Structure; Drive; Motor Electronics; Low-pressure system; Low-pressure control; Low-pressure fuel sensor; and Search. Select B1214_DI6KNDR from the list.


15. Prior to execution of the Low-pressure test module, connect three-way adapter tool 135 270 # 1 (with a calibrated manual fuel pressure gauge # 2 installed - e.g., P/N 83 30 0 491 260 pressure gauge, from the K-L-Jetronic special tool kit P/N 83 30 0 491 259) into the low-pressure fuel supply line going to the high-pressure pump.
16. In this configuration, fuel pressure measurement may be performed on the low-pressure side with the engine running.
Perform all applicable steps of the Low-pressure Fuel test module B1214_DI6KNDR. Pay attention to all questions displayed during diagnosis, and answer them correctly.
After completion of all diagnostic steps, end the test module and enter the "fault feedback" screen. Enter the result of a diagnosis process into the Diagnosis Code dialog box and obtain a "Diagnostic Code". In case no failure can be currently detected in the low-pressure fuel system, enter the last option "No fault found" into the dialog box. The obtained Diagnostic Code should be included in the comment section of the warranty claim.
In case the diagnosis of the low-pressure system did not clearly indicate a root cause, proceed with test module B1214_DI6KHDR (High-pressure Fuel System).
This test module may be accessed in ISTA using the following path: Activities; Function Structure; Drive; Motor Electronics; High-pressure system; High-pressure control; and Search. Select B1214_DI6KHDR from the list.
Perform all applicable steps of the High-pressure Fuel test module B1214_DI6KHDR. Pay attention to all questions being displayed during diagnosis and answer them correctly.
Important Note:
When comparing the measured fuel pressure with the engine running at idle speed, make sure to let the fuel pressure stabilize for approximately 60 seconds prior to the final reading. Otherwise, an implausible value (around 150 bars) is going to be entered into the test, resulting in inaccurate diagnosis (defective high-pressure pump).
After completion of all diagnostic steps, end the test module and enter the "fault feedback" screen. Enter the result of a diagnosis process into the Diagnosis Code dialog box and obtain a "Diagnostic Code". In case no failure can be currently detected in the high-pressure fuel system, enter the last option, "No fault found", into the dialog box. The obtained Diagnostic Code should be included in the comment section of the warranty claim.
Make sure that FASTA data is transmitted after the completion of all appropriate test modules.
In case the High-pressure Fuel Pump needs to be replaced, use updated part P/N 13 51 7 592 881, which incorporates the latest improvements to internal sealing. For the pump replacement procedure, refer to RA 13 51 017, found in BMW TIS.
After replacement, clear the adaptation values of the high-pressure flow control valve in the DME by selecting the path:
Activities/Service Functions
Drive
Motor Electronics
Adjustment Programs
Delete Adaptations/variants, and then Test plan
Reset adaptive values.
WARRANTY INFORMATION
For information only

[JayKay335i]

They usually wont replace the HPFP unless it throws the codes for it being bad.

[s1cke92]

can your car be lemon law'd if your the 2nd owner of the car? im just wondering.