MazdaManiac dyno tuning in GTA - Spring/Summer 2010
#377
SPOOLN8
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Join Date: Nov 2008
Location: Edmonton, Alberta, Canada
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We mostly made up the procedure... and ended up removing more than we really needed to. You need to remove the air valve and hose from the air pump and the bolt holding the metal down pipe. You'll then have room to remove the bolt holding the actuator. When removing or installing the e-clip place shop cloths under the location to catch it because it will fly! Having a magnetic pick up tool really helped.
Here's a picture I borrowed
![](https://www.rx8club.com/attachments/rx-8-parts-sale-wanted-44/161290d1282570623-ssv-vacuum-actuator-ssv_actuator.jpg)
I don't have a picture of my vacuum tester but it's something like this
http://www.princessauto.com/hand-too...ke-bleeder-kit
Note: My actuator appeared to be working fine and only failed to sustain full vacuum in a bleed down test.
Even so, it was costing me lots of HP!
Here's a picture I borrowed
![](https://www.rx8club.com/attachments/rx-8-parts-sale-wanted-44/161290d1282570623-ssv-vacuum-actuator-ssv_actuator.jpg)
I don't have a picture of my vacuum tester but it's something like this
http://www.princessauto.com/hand-too...ke-bleeder-kit
Note: My actuator appeared to be working fine and only failed to sustain full vacuum in a bleed down test.
Even so, it was costing me lots of HP!
#378
Extraordinary Engineering
Going back to an old topic from this thread I plan on buying/renting a Vacuum hand pump and doing a bleed down test on my SSV actuator either tonight or later this week. I'll let you know how it goes and if the actuator is leaking as predicted (was causing low MAF values when I was N/A) do you still have an extra leak-free actuator on hand if needed DarkBrew?
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