Vaccum at Idle on boost Gauge
Oct 10, 2008, 07:23 AM
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Vaccum at Idle on boost Gauge
I searched around and couldn't find anything exactly like the issue I am having. This morning I noticed that at idle the boost guage was reading a 10 vaccum, which is much more than normal. While driving it will only spike to about 10psi. The MBC is set to peak at 25psi. I am thinking it has to be a boost leak but wanted to check with the experts before I start troubleshooting? Thanks for the help.
Oct 10, 2008, 07:31 AM
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I searched around and couldn't find anything exactly like the issue I am having. This morning I noticed that at idle the boost guage was reading a 10 vaccum, which is much more than normal. While driving it will only spike to about 10psi. The MBC is set to peak at 25psi. I am thinking it has to be a boost leak but wanted to check with the experts before I start troubleshooting? Thanks for the help.
Oct 10, 2008, 07:41 AM
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yea...check the lines directly around your boost controller first...also where they connect to the controller sometimes those screws come loose...i recall one time mine were.
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Oct 10, 2008, 01:42 PM
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I've checked all of the IC piping and the MBC hoses, didn't find anything that wasnt tight. Is it possible to have a blown turbo? What would be the symptoms of that?
Oct 4, 2009, 07:54 PM
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I am also experiencing my vacuum at idle is at a steady 10. I am new to the turbo world and don't know much, but as soon as I get back from the field I will check to see if I have any leaks. But I would like to hear any other possibilities on what it could be.
Mar 1, 2010, 12:35 PM
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My MBC is set to 25psi and my vac at operating temp idle is 10 in/HG and spikes to like 15 in/HG while driving. If the vac isn't back to 10 in/HG or pretty close to it when I disengage the clutch the car stalls. Is this indicative of a boost leak or vac leak?