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Old 08-09-2009, 06:52 PM
waggonwrx waggonwrx is offline
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Join Date: Sep 2009
Location: pullborough west sussex
Posts: 89
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i belive its air / exhaust gasses that are mesured in the valves ,
after doing one on my old vectra (common problem )
there was a gasket behind them
hope that helps
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