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Re: M5 Runs worse over time (archive)
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Posted by Ed Smith on October 04, 2001 at 10:51:38:

In Reply to: Re: M5 Runs worse over time posted by ian M635 UK on October 04, 2001 at 05:37:31:

Can you provide a little more information about this? Is there a procedure anywhere? How much stuff did you have to remove to get to these things? Any other tips?


I would have a look at the air bleed valves around each throttle plate. If these are blocked then it can create the sympthoms you describe as the cold start up will get it's air from the main bleed valve(under the air box) but when this closes with the engine heating up their may be insufficient air supply through the individual bleed valves. Mine were in a terrible state (154k miles)and hot idel was vastly improved following the cleaning of the bleeb valves and associated channels

Best of luck

Ian



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