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Old 10-16-2018, 03:18 PM
BBK BBK is offline
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Join Date: Oct 2018
Location: Canada
Car: BMW X5 E70
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Default Air suspension question

Good Morning Everybody,

I have replaced both rear air bags (2009 BMW X5 E70 Sport), new seals on fitting good to 150 psi, replaced valve block with new seals also. Checked bags, lines and valve block for leaks ( soap spray) none found. Cleaned rear ride height sensors, little dielectric on connections to assure seals. At start up cars levels to 81 CM, perfect. A couple hours later both rear airbags dropped to 76 cm, and full deflate in morning. I guess the question would be is there a check valve in compressor, or is possible air leak in compressor itself ( piston seal?) or should I be looking lse where.

Thanks in Advance!!

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