Long cranks on 328's ???

Fastisfun · 07-01-2009, 03:10 PM

I have an 08 328 with 12,000 miles and for the past week have been having long cranks. It used to start right up (first 11,000 miles) now it is taking 2-3 seconds when I first crank it in the morning.

Anyone else had this issue on a 328?

madmanhiker · 07-01-2009, 03:32 PM

no... not yet... I'm at 14K miles now... hmmm... I'll keep an eye on that one...

ultimate · 07-01-2009, 04:00 PM

have you not driven it for a while? or is it pretty chilly in the morning?

demosthenes · 07-01-2009, 04:22 PM

Quote:

Originally Posted by madmanhiker

no... not yet... I'm at 14K miles now... hmmm... I'll keep an eye on that one...

+1

335_i · 07-01-2009, 04:52 PM

i'm thinking fuel pump

-=Hot|Ice=- · 07-01-2009, 05:39 PM

Sometimes. When I haven't started the car up for awhile.

1SlowE92 · 07-01-2009, 05:51 PM

i got an '08 328xi and i only drive it on the weekends , whenever i start it after 5 days of it just sitting there it usually does that , dont think its anything to worry about , i got 14k on mine. Loving the car by the way, dont give a rats ass that its not a 335 im not a street racer and its pretty quick if u ask me

1SlowE92 · 07-01-2009, 05:57 PM

also thought i would give u another good note, a non-turbo car is always gonna be more mechanically sound than a turbo, i think there is alot of people with 328xi that love there cars but they arent like the 335 owners that think theyre drivin around in ferrari's

The HACK · 07-01-2009, 06:46 PM

Quote:

Originally Posted by 335_i

i'm thinking fuel pump

328i doesn't use the same high-pressure fuel pump that the 335i use for direct injection.

CirrusSR22 · 07-01-2009, 07:35 PM

Normally long cranks are due to fuel pressure bleed-down. The car normally will maintain some pressure in the fuel system while it sits. A car with a leaky fuel injector or a leaky check valve at the fuel pump (the normal, in-tank pump) will have that fuel pressure bleed off, thus requiring a longer crank while the fuel pump builds enough pressure for the car to run.

If you car runs roughly after a long crank, it normally points to a leaky fuel injector. If it runs cleanly, the fuel is probably leaking back to the tank.

I've never driven an E90 with the push button start, but try to turn the car "ON" (not "start", however you do that in this car) for a few seconds, then off. Repeat the cycle four or more times. Everytime the ignition is turned "ON", the fuel pump will run briefly to prime the system. Turning it on/off a number of times will fully build-up fuel pressure, thus allowing an instant start. See if this helps.

Another way to test for residual fuel pressure is to find the "schrader" valve test port on the fuel rail. Press it (only with a cold engine) and see if fuel squirts out. My E36 has a schrader valve, but I think that's rare for a BMW, so you might be out of luck on this little test. I don't know what other BMW engines have this valve.

bulldog_yyc · 07-01-2009, 08:05 PM

Quote:

Originally Posted by 1SlowE92

also thought i would give u another good note, a non-turbo car is always gonna be SLOWER than a turbo

fixed

335_i · 07-02-2009, 12:31 PM

Quote:

Originally Posted by The HACK

328i doesn't use the same high-pressure fuel pump that the 335i use for direct injection.

yes..but any fuel pump can fail

ragingclue · 07-02-2009, 12:34 PM

Quote:

Originally Posted by CirrusSR22

Normally long cranks are due to fuel pressure bleed-down. The car normally will maintain some pressure in the fuel system while it sits. A car with a leaky fuel injector or a leaky check valve at the fuel pump (the normal, in-tank pump) will have that fuel pressure bleed off, thus requiring a longer crank while the fuel pump builds enough pressure for the car to run.

+1

And just because N52's don't have the HPFP, that doesn't mean their pump can't fail from time to time.

ccobka · 07-02-2009, 01:08 PM

Are you planning to bash 335 in everyone of your threads? Get over yourself LOL. Soouped up e92 lol what a joke

Quote:

Originally Posted by 1SlowE92

Loving the car by the way, dont give a rats ass that its not a 335 im not a street racer and its pretty quick if u ask me

GreenThree · 07-02-2009, 03:10 PM

16K miles. No long cranks here

The HACK · 07-02-2009, 03:56 PM

Quote:

Originally Posted by 335_i

yes..but any fuel pump can fail

If the primary low pressure fuel pump failed, the car wouldn't even start.

335_i · 07-02-2009, 03:59 PM

Quote:

Originally Posted by The HACK

If the primary low pressure fuel pump failed, the car wouldn't even start.

what if it was on the verge of failing

this can happen no?

07-01-2009, 03:10 PM	#1
Fastisfun New Member 6 Rep 17 Posts Drives: E90 Join Date: Apr 2009 Location: NC iTrader: (0)	Long cranks on 328's ??? I have an 08 328 with 12,000 miles and for the past week have been having long cranks. It used to start right up (first 11,000 miles) now it is taking 2-3 seconds when I first crank it in the morning. Anyone else had this issue on a 328?
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07-01-2009, 03:32 PM	#2
madmanhiker Lieutenant Colonel 82 Rep 1,615 Posts Drives: '11 E92 335i Join Date: Jul 2008 Location: Jacksonville, Fl iTrader: (5) Garage List 2011 335i M-Sport [6.00] 2008 328i Sport Pre ... [0.00]	no... not yet... I'm at 14K miles now... hmmm... I'll keep an eye on that one...
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07-01-2009, 04:00 PM	#3
ultimate Lieutenant Colonel 61 Rep 1,792 Posts Drives: E92 Join Date: Sep 2008 Location: Chicago, IL iTrader: (0)	have you not driven it for a while? or is it pretty chilly in the morning?
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07-01-2009, 04:52 PM	#5
335_i SpOoLiN 11 Rep 81 Posts Drives: 07' e90 335i Join Date: Jun 2009 Location: Texas iTrader: (1)	i'm thinking fuel pump
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07-01-2009, 05:51 PM	#7
1SlowE92 New Member 5 Rep 22 Posts Drives: Black e92 soouped up!! Join Date: Jun 2009 Location: NYC iTrader: (0)	i got an '08 328xi and i only drive it on the weekends , whenever i start it after 5 days of it just sitting there it usually does that , dont think its anything to worry about , i got 14k on mine. Loving the car by the way, dont give a rats ass that its not a 335 im not a street racer and its pretty quick if u ask me
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07-01-2009, 05:57 PM	#8
1SlowE92 New Member 5 Rep 22 Posts Drives: Black e92 soouped up!! Join Date: Jun 2009 Location: NYC iTrader: (0)	also thought i would give u another good note, a non-turbo car is always gonna be more mechanically sound than a turbo, i think there is alot of people with 328xi that love there cars but they arent like the 335 owners that think theyre drivin around in ferrari's
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07-01-2009, 07:35 PM	#10
CirrusSR22 Major 342 Rep 1,325 Posts Drives: BMW Join Date: Apr 2005 Location: Minnesota iTrader: (0)	Normally long cranks are due to fuel pressure bleed-down. The car normally will maintain some pressure in the fuel system while it sits. A car with a leaky fuel injector or a leaky check valve at the fuel pump (the normal, in-tank pump) will have that fuel pressure bleed off, thus requiring a longer crank while the fuel pump builds enough pressure for the car to run. If you car runs roughly after a long crank, it normally points to a leaky fuel injector. If it runs cleanly, the fuel is probably leaking back to the tank. I've never driven an E90 with the push button start, but try to turn the car "ON" (not "start", however you do that in this car) for a few seconds, then off. Repeat the cycle four or more times. Everytime the ignition is turned "ON", the fuel pump will run briefly to prime the system. Turning it on/off a number of times will fully build-up fuel pressure, thus allowing an instant start. See if this helps. Another way to test for residual fuel pressure is to find the "schrader" valve test port on the fuel rail. Press it (only with a cold engine) and see if fuel squirts out. My E36 has a schrader valve, but I think that's rare for a BMW, so you might be out of luck on this little test. I don't know what other BMW engines have this valve.
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07-02-2009, 03:10 PM	#15
GreenThree Colonel 210 Rep 2,110 Posts Drives: 2011 e90 Join Date: Mar 2008 Location: Boston, MA iTrader: (0)	16K miles. No long cranks here __________________ 2015 335xi \| Mineral Grey Metallic \| Black Dakota Leather \| NAV \| SportLine \| ZPP \| ZDA \| ZCW \| Munich Build Retired: 2008, 2011, 2013 328xi
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