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How do I test Combi valve

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Old 03-27-2006, 09:19 AM
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Default How do I test Combi valve

Can someone tell me how I could check for proper operation of the combi valve. The Bentley does not seem to have a procedure for it. How much does it cost to replace the combi valve?

Thanks for the help,

Henry
Old 03-27-2006, 09:33 AM
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Default check the airbox/pump side of it. if it has LOTS of soot in it...the valve is shot.

you could also hook a vac pump to it and see if it actuates.
Old 03-27-2006, 12:01 PM
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Default Guess I'll need to remove it, apply vacuum, ....

then see if valve is opened or closed, correct. Any idea where is a good place to get a vacuum pump?

Thanks,

Henry
Old 03-27-2006, 05:12 PM
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Default do the soot check too...

you can get a vac hand pump at autozone. thats where i got mine.
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