Long Starts

CoralRed335XI · 11-17-2012, 06:25 PM

I've been experiencing long starts and rough idle. Dealership replaced HPFP under warranty, but the problems still exist. Any ideas?

CoralRed335XI · 11-18-2012, 08:19 AM

Anyone?

BMWM.D. · 11-18-2012, 10:41 AM

Possibly the low-pressure fuel sensor, but you would usually have a fault stored for it.

Gugs · 11-18-2012, 11:04 AM

Well first-What is considered a long start?

CoralRed335XI · 11-18-2012, 01:30 PM

Quote:

Originally Posted by Gugs

Well first-What is considered a long start?

3 seconds

BMWM.D. · 11-18-2012, 03:17 PM

Have you checked for faults or monitored low-pressure fuel pressure electrically/mechanically?

Gugs · 11-18-2012, 03:38 PM

Quote:

Originally Posted by CoralRed335XI

3 seconds

Might just Normal...you push the button and it doesn't kick over instantly doesn't always mean theres a problem.

I have all fresh fuel pumps, coils, plugs, injectors. My car sometimes kicks instantly. Other times 1-3 seconds. In my experience I would say 3 seconds is the Max though and it kicks over on the 3rd second.
Anything more then that I would be concerned.

What kind of fuel are you running? 93?

MilehighM3 · 11-18-2012, 05:39 PM

Long crank times on cold engines, coupled with rough running= injectors.

CoralRed335XI · 11-18-2012, 07:46 PM

Quote:

Originally Posted by Gugs

Might just Normal...you push the button and it doesn't kick over instantly doesn't always mean theres a problem.

I have all fresh fuel pumps, coils, plugs, injectors. My car sometimes kicks instantly. Other times 1-3 seconds. In my experience I would say 3 seconds is the Max though and it kicks over on the 3rd second.
Anything more then that I would be concerned.

What kind of fuel are you running? 93?

Thanks. I always run 93. I also took a video and will post it here. I am also going to send the video to me SA.

Wedge1967 · 11-18-2012, 08:29 PM

Have the dealer look at your injectors. Does it smell like raw fuel after cold start? If so you have an injector bank going out.

CoralRed335XI · 11-19-2012, 10:21 AM

Quote:

Originally Posted by Wedge1967

Have the dealer look at your injectors. Does it smell like raw fuel after cold start? If so you have an injector bank going out.

It does smell like it's running rich on startup!

Wedge1967 · 11-19-2012, 12:43 PM

Quote:

Originally Posted by CoralRed335XI

It does smell like it's running rich on startup!

I had the same thing happen a few months after I bought my car and the dealer ended up replacing a bank of injectors to fix the problem. It will get worse the longer you let it go and eventually they injectors will run wide open and the car will run like shit until it warms up and can burn off the fuel. So, I would get it into the dealership as soon as possible if you have coverage.

GetSomeE92 · 11-19-2012, 01:25 PM

Quote:

Originally Posted by Bmw135er

Long crank times on cold engines, coupled with rough running= injectors.

Boom, head shot.

I was having the same problem and the dealer just replaced all 6 injectors under the warranty.

CoralRed335XI · 11-19-2012, 01:33 PM

11-17-2012, 06:25 PM	#1
CoralRed335XI Captain 98 Rep 646 Posts Drives: 2008 E92 335XI Coupe Join Date: Aug 2011 Location: NJ,VA iTrader: (4) Garage List 2008 BMW 335XI [3.66]	Long Starts I've been experiencing long starts and rough idle. Dealership replaced HPFP under warranty, but the problems still exist. Any ideas? __________________ 2008 E92 335XI, Space Gray on Coral/Fox Red Hybrid M3 seats, Premium, Cold Weather, Comfort Access, iPod. Mods: Fox Red M3 seats up front, KW V1, ER CP + TIAL BOV.
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11-18-2012, 08:19 AM	#2
CoralRed335XI Captain 98 Rep 646 Posts Drives: 2008 E92 335XI Coupe Join Date: Aug 2011 Location: NJ,VA iTrader: (4) Garage List 2008 BMW 335XI [3.66]	Anyone? __________________ 2008 E92 335XI, Space Gray on Coral/Fox Red Hybrid M3 seats, Premium, Cold Weather, Comfort Access, iPod. Mods: Fox Red M3 seats up front, KW V1, ER CP + TIAL BOV.
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11-18-2012, 10:41 AM	#3
BMWM.D. Stupid Idiot 134 Rep 827 Posts Drives: E90 335i & 6th Gen ZL1 Join Date: May 2009 Location: Santa Barbara iTrader: (1)	Possibly the low-pressure fuel sensor, but you would usually have a fault stored for it. __________________
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11-18-2012, 11:04 AM	#4
Gugs Banned 28 Rep 457 Posts Drives: E92 JetBlack Join Date: Jul 2012 Location: Long island iTrader: (1)	Well first-What is considered a long start?
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11-18-2012, 03:17 PM	#6
BMWM.D. Stupid Idiot 134 Rep 827 Posts Drives: E90 335i & 6th Gen ZL1 Join Date: May 2009 Location: Santa Barbara iTrader: (1)	Have you checked for faults or monitored low-pressure fuel pressure electrically/mechanically? __________________
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11-18-2012, 05:39 PM	#8
MilehighM3 Brigadier General 913 Rep 3,456 Posts Drives: Harrop E90 M3 Join Date: May 2011 Location: Colorado Springs iTrader: (14) Garage List 2009 E90 M3 [6.50]	Long crank times on cold engines, coupled with rough running= injectors.
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11-18-2012, 08:29 PM	#10
Wedge1967 Banned 125 Rep 2,172 Posts Drives: '07 e92 AT Sport Montego Blue Join Date: Sep 2011 Location: Portland, OR iTrader: (3)	Have the dealer look at your injectors. Does it smell like raw fuel after cold start? If so you have an injector bank going out.
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11-19-2012, 01:33 PM	#14
CoralRed335XI Captain 98 Rep 646 Posts Drives: 2008 E92 335XI Coupe Join Date: Aug 2011 Location: NJ,VA iTrader: (4) Garage List 2008 BMW 335XI [3.66]	__________________ 2008 E92 335XI, Space Gray on Coral/Fox Red Hybrid M3 seats, Premium, Cold Weather, Comfort Access, iPod. Mods: Fox Red M3 seats up front, KW V1, ER CP + TIAL BOV.
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