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cars not holding boost ? how do i know if its the actuator ?

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Old Jul 7, 2007 | 02:20 PM
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Default cars not holding boost ? how do i know if its the actuator ?

as title really . flys to 20 psi then leave it in gear and it falls to 12 ??

i dont know alot but i would have thought its the actuator but is there away of telling ??

its a S2 by the way
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Old Jul 7, 2007 | 02:31 PM
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could be...............but what about a leak somewhere.???.........u need to pressure test..............
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Old Jul 7, 2007 | 03:27 PM
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pressure test ?? sorry to seem thick , but what do you mean ? pressure test the engine ?
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Old Jul 7, 2007 | 03:57 PM
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Pressure test the boost system.

Take it to a garage or tuner that can do this.

Easy if know how and got the equipement.
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Old Jul 7, 2007 | 04:05 PM
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got you

looks like a trip to SCC in the week
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Old Jul 7, 2007 | 04:12 PM
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if it was a weak spring in the actuator wouldn't it not even boost to 20psi at all
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Old Jul 7, 2007 | 04:40 PM
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u can still test ur actuator with a foot pump..........
...
put the pump on here and inflaite..............if it holds pressure its good....
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Old Jul 7, 2007 | 05:02 PM
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blimey . i never knew that . . im going out in a while to have a go
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Old Jul 7, 2007 | 06:29 PM
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if its a -31, it should move around 4-6mm @ 10 psi.
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