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Hey Eric, my grandfather has a 01 BMW 330xi AWD automatic with 300,000 miles. it was running great then died at a stoplight. towed it home and it wont start. Its getting fuel and spark. A compression test showed that all 6 cylinders had 0 PSI compression. We pulled the valve cover and both Camshafts are in time according to the Hanyns manual. we did a leak down test it seemed to be coming out of the intake through the throttle body, we only leak down tested one cylinder though. It wasn’t overheating. Any ideas why all 6 cylinders might have lost compression at the same time on an “old” but great running engine? Love your videos! Keep up the good work!
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