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Thread: 2.3L swapped out of an 08 auto into my 06 manual. Mazda 3 will not start!

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    Angry 2.3L swapped out of an 08 auto into my 06 manual. Mazda 3 will not start!

    Hello,
    I have an urgent question for you.

    I have a 2006 Mazda 3 2.3L MANUAL 110,000km. The bottom end blew.
    We just installed a 2008 2.3L from an Automatic Mazda 3 105,000km.

    We can not get the new motor to run. it gets fuel but doesn't fire up.
    We have the original manual ECU and harness installed.

    Do we need to swap something from the old motor? Crank pulley or something....

    Thank you so much for your help!

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    Uncle Ben
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    Default Re: 2.3L swapped out of an 08 auto into my 06 manual. Mazda 3 will not start!

    Whatever you do, do not pull the crank pulley. The motor is not keyed and you need timing tools.
    I would suggest researching on google as many people have swapped motors over. If i remember it has something to do with the crank sensor itself
    1991 Nissan Pathfinder - trade in, 2005 Mazda 3 GX ty grey - Write off, 2010 Mazda 3 GT E sedan CWP- trade in, 2010 Speed 3 w/tech CWP - Up for sale (soon), 2007 Mazda 3 GS silver- motor swapped in to 2009 MS3 CWP that had blown engine, 2002 BMW 330ci silver- new winter ride, 2005 BMW M3- new toy

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    Default Re: 2.3L swapped out of an 08 auto into my 06 manual. Mazda 3 will not start!

    the automatic and manual crank pulleys are different, that's why the engine won't start
    you'll need to get the necessary special tools to swap it to the right one
    2005 Mazda3 SP23 hatchback (auto)
    2016 Mazda3 Sport GT (auto)

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