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Thread: Long crank -intermittent

  1. #1
    Join Date
    Dec 2016
    Location
    Plano, TX
    Posts
    129
    My Cars
    BMW 335i convertible

    Long crank -intermittent

    Hey Guys,
    I researched this forum for similar issues but didn't find exactly similar hence posting it for some advice.

    It's 2011 6spd E93 with 94k miles on it. I generally switch to ON position first and then start my car. But when I don't do that ( get in the car, press clutch and start directly), there's a delay of about 2-3 secs before it fires up. Is it the right behaviour ?

    Also when the car is driven for sometime and I switch it off and turn it on again( after some time), there's that delay in starting.
    But this doesn't happen all the times. It happens like 50% of the times.

    Fuel pump was replaced within warranty 2 yrs ago. Plugs and coils are less than a year old. Battery replaced few months ago.
    I consider my car as extremely well maintained ( oil change at 7k, walnut blasting done etc) and not sure why it's behaving that way.
    Any help would be much appreciated.

    Sent from my SM-G955U1 using Tapatalk

    Forgot to mention- once it starts up, no problem with idle. It settles down smoothly to 600-650 rpm. Never ever it failed to start-just that it sometimes hesitates for few secs.
    Last edited by Iftekar; 02-13-2018 at 11:58 PM.

  2. #2
    Join Date
    Feb 2011
    Location
    Midwest, USA
    Posts
    75
    My Cars
    2008 535xi, 2011 Z4 35is
    Have you had any injectors replaced?

  3. #3
    Join Date
    Dec 2016
    Location
    Plano, TX
    Posts
    129
    My Cars
    BMW 335i convertible
    Quote Originally Posted by NoQuarterX View Post
    Have you had any injectors replaced?
    No. They are stock.
    How do I identify a failing injector? I mean, driveablity wise, it runs great.

    Sent from my SM-G955U1 using Tapatalk

  4. #4
    Join Date
    Feb 2011
    Location
    Midwest, USA
    Posts
    75
    My Cars
    2008 535xi, 2011 Z4 35is
    First, enter the last 7 of your VIN to see if you qualify for reimbursement for failing injectors: http://bmw-rp.com/production/bmw/rei...bmw_portal.nsf

    What happens is, failing injectors can leak fuel into the cylinder when the car is off resulting in difficult starting.

  5. #5
    Join Date
    Dec 2016
    Location
    Plano, TX
    Posts
    129
    My Cars
    BMW 335i convertible
    Quote Originally Posted by NoQuarterX View Post
    First, enter the last 7 of your VIN to see if you qualify for reimbursement for failing injectors: http://bmw-rp.com/production/bmw/rei...bmw_portal.nsf

    What happens is, failing injectors can leak fuel into the cylinder when the car is off resulting in difficult starting.
    Thanks.
    I checked and I am getting the detail only for FRM module. So I guess the injectors are not covered for my car.
    Anyways, I am going to open them up tomorrow just to see if cleaning them can help- otherwise I will plan for the new ones.

    Sent from my SM-G955U1 using Tapatalk

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