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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 08-25-2008, 03:59 PM   #1 (permalink)
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m62 timing

I have pulled a 4.4l. out of a 97 740il. It was in perfect running order. When I got the engine out I removed the top timing covers to check for wear on the tensioners. Now when I try to turn the motor by hand, it stops at about 45 degrees rotation, in iether direction. I am thinking it jumped timing and is being heid up by an open valve. Cav someone please shed some light on this for me!
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Old 08-25-2008, 09:12 PM   #2 (permalink)
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are u turning the engine over with the upper timing covers removed? did u remove the sprockets and secondary chains or just the main tensioner?
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Old 08-26-2008, 08:56 AM   #3 (permalink)
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yes, both upper covers were removed and the tensioner was realeased
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Old 08-26-2008, 11:53 PM   #4 (permalink)
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you can not turn over the engine with the tensioner out unless you support the rail manually by giving it tension. If you try the chain will bind up.
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