Ian C Posted October 26, 2011 Share Posted October 26, 2011 Something that's always bugged me and is a pain in the backside to test - does tightening the adjuster = more vac or less vac to open the valve? Mine always worked OK out the factory, I fiddled with it once years ago but can't recall which way I turned it. Suddenly I'm getting the "rat tat tat" of stall more when lifting off from comparatively light loads, so I think it's gummed up a bit, but I'd like to adjust it to open more easily than it currently does, see if that fixes it. I just dunno which way to turn it and it's tricky around the city streets to test Link to comment Share on other sites More sharing options...
Nic Posted October 26, 2011 Share Posted October 26, 2011 I'm pretty sure it's clockwise = more vac needed to open the valve. HKS say to adjust 1/8 turn at a time when adjusting. Link to comment Share on other sites More sharing options...
jazz1 Posted October 26, 2011 Share Posted October 26, 2011 If i'm correct the new style hks bov do not have this screw? As I would like to check mine. Link to comment Share on other sites More sharing options...
Nic Posted October 26, 2011 Share Posted October 26, 2011 If i'm correct the new style hks bov do not have this screw? As I would like to check mine. Correct the later models do not have an adjuster screw. Link to comment Share on other sites More sharing options...
Nic Posted October 26, 2011 Share Posted October 26, 2011 I'm pretty sure it's clockwise = more vac needed to open the valve. HKS say to adjust 1/8 turn at a time when adjusting This diagram shows how turning the screw clockwise will pre-load the spring. Link to comment Share on other sites More sharing options...
Ian C Posted October 29, 2011 Author Share Posted October 29, 2011 So if it sounds like it's not opening as it should, I should try undoing the bolt? Righto. Might have to wait until spring though as I've washed and waxed the car and refuse to drive it in rain Link to comment Share on other sites More sharing options...
Ian C Posted December 24, 2011 Author Share Posted December 24, 2011 Just to finish this off, I have driven it in the rain, and while getting my aircon sorted I noticed the K&N air filter wasn't in the right place and the mesh had merrily sawed through the hose feeding the BOV, hence it not opening any more Link to comment Share on other sites More sharing options...
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