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Autoguage boost problem !

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Old 20 March 2009, 07:10 PM
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ian.b
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Default Autoguage boost problem !

Hi all, any chance of some info re: the right vacum hose to put on a boost guage. Mine seems to rattle ? thanks.
Old 21 March 2009, 02:47 PM
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joz8968
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It's probably the needle that's rattling, because the air reaching the sensor, via the relatively large vac hose, is too uncontrolled. You need to fit a small restrictor in the vac line (from inlet manifold to gauge) as close to the gauge end as poss. This will have the effect of calming the boost signal and damping the needle's response...

Last edited by joz8968; 21 March 2009 at 03:04 PM.
Old 21 March 2009, 03:29 PM
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mit
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Hi, did you use the fitting kit that came with it? I have the smoke series auto gauge. It's fine, no problems. I used the plastic 'T' that came with it, it has a metal restrictor in it.
Old 21 March 2009, 04:34 PM
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ian.b
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already on the car the guage was. it started when me m8t looked at it and broke off one of the t piece's in the engine bay
Old 21 March 2009, 05:24 PM
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Ah, so that may be the problem then.
Old 21 March 2009, 06:06 PM
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ian.b
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ahh now I have used a smaller pipe coming off the guage and used a t piece to connect to the bigger hose comming from engine bay , oh and blocked the spare hole . And wow it seems to work. I took it out for a spin all ok
Old 21 March 2009, 09:54 PM
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Cushty!
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