name this screw, help!! [BISS]

[josherino]

I was changing the gaskets on both sides of the throttle body and I thought the screw sticking upward had something to do with what was holding the throttle body in place, so I loosened it but figured out that I did not need to. I finished the gasket job, but didn't tighten the screw facing upwards and when I took off I immediately lost all pressure, and the car won't stay started, but a lot of air blows through the hole and it dies. I lost the screw and need to know what it is to tell mitsubishi what to order.

 

[GSXpress]

The screw circled in purple?


If so, that is the BISS screw. Also, it would be more helpful if you update your profile with what year your car is.

 

[josherino]

sorry, my car is a 90 gsx, but I think that they both serve the same purpose. what is the one for a 1g called?

 

[diambo4life]

...

If so, that is the BISS screw.

 

[josherino]

I got another screw today, but I don't know where it is adjusted correctly? Does it just control the idle adjustment or is there more?

 

[rjgeier]

Make sure the o-ring is in there as well as the screw. Tighten the screw all the way in and then out 2 full turns. Check the RPM at idle. Turning the screw in will decrease RPM. Loosening the screw will raise RPM.

 

[josherino]

I put the biss screw in and im noticing a small idle serge, do I not have it in the right position? I have the o-ring and everything

 

['93EclipseGSX]

Here is a link on how to set the idle on a 1g, there are two points that need to be grounded so the isc can center itself. http://www.vfaq.com/index-main.html