2000 955i cranks but won’t start 😞
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  1. #1
    Noob! wrencharound's Avatar
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    Jan 2016

    2000 955i cranks but won’t start 😞

    Hey everyone, just got back from deployment and decided to try and get the old 955 running again. I replaced the stock air box with abs piping and cone filters. I also swapped out the battery with a lithium one that is reading 12.8 volts. I have the air sensor ziptied to the frame for now and left the crankshaft ventilation hose disconnected. All the vacuum hoses are hooked up on the throttle body, and the stock flashers were replaced with leds to pull less current. I remeasured and replaced all the valve shins, lapped the valves, and replaced all the valve stem seals and retimed the engine. For whatever reason, she cranks and almost starts but just won’t. I disconnected the fuel tank and tried spraying starter fluid down the throttle body but that isn’t helping. TPS sensor was good last time I checked. Is the battery not powerful enough to turn it over? Do I need to remap the engine prior to getting it start? Any and all help is much appreciated.

  2. #2
    The "Friends" of Officer Frank Poncherello crashmasterd's Avatar
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    Jun 2006
    Washington State
    You can't do that. This engine management system requires the airbox. It'll never run right without it.
    Quote Originally Posted by Bad Santa 1050 View Post
    Just when you think it can't get worse, Crash comes along and informs you that not only is the glass not half full, but it is stolen and contains a mix of horse semen, urine, laxative and viagra, right after you swallowed a mouthful...
    Quote Originally Posted by Joe Houle View Post
    ...no ink and going baconless on your bacon cheeseburger is about the most rebelious thing you can do these days.



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