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  1. Bad Knocking near or in bell housing (release bearing and arm)

    smart Operation and Maintenance
    2012 Smart Fortwo 52,000 miles mainly highway travel. Yesterday out of the blue a hard knocking started. I reversed onto some high ramps and laid under the rear end and can narrow knocking down to the bell housing. There is a loud knocking and light scraping sounds that seem to be coming from...
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