Topic: can you identify this carb screw?

[jimbo74]

can you identify this carb screw? mine is missing one, and i want to replace it... what size is it, and what does it do?



the one in the green circle.....

[*ROKTOY*]

Exactly what it says, it adjust the cold fast idle when the choke is on.

[jimbo74 [OP]]

Exactly what it says, it adjust the cold fast idle when the choke is on.

the arrow is pointing to the cold fast idle adjustment screw.... it is not the one in the green circle, or there is an extra screw exactly where the arrow is that i dont know what it does...

and, the choke is actually supposed to be off when performing the cold fast idle tuning per toyota

[Homefries]

I thought that was the idle-up adjustment screw for the idle-up daiphragm.

[jimbo74 [OP]]

ok, i am posting a new picture.....

there are 2 screws, that i dont know what they are, trying to figure which is which..... uploading new picture.... right next to the arrow is a screw as well as the one circled in green... here also is the factory diagram.....

[Homefries]

The way I am reading it with my FSM and your pics is the top one is the Idle-up adjustment and the bottom one is the fast idle adjustment.

[jimbo74 [OP]]

The way I am reading it with my FSM and your pics is the top one is the Idle-up adjustment and the bottom one is the fast idle adjustment.

what about the warm idle speed screw then? there are 2 screws pictured in green circles in my actual pic.... what are they?

[Homefries]

I circled them.

[jimbo74 [OP]]

i take it then that warm idle speed screw and idle up are different systems?

i looked in the fsm and didnt see any info on tuning the idle up, only the idle speed and fast cold idle

[jimbo74 [OP]]

thanks homefries... what you posted got me looking some more... and from what i am understanding, you are right.... it appears i dont use the idle up, as it is for a/c.....

here is a writeup i found on pirate about it... http://www.bluebassdesign.com/boonin/carb_faq/#is

[jimbo74 [OP]]

i have determined that i need the idle up screw..... i dont know why i need it other than am supposed to have it.... but.......

here is a pic i got from a dealer to order parts... which part do i need? its a big screw with the spring?

[KDXSR5]

based on the above screw identification information and my mediocre technical drawing skills, you need what I circled in red (this is what I believe you have circled in green in your initial post)

[jimbo74 [OP]]

thats what i am thinking too..... what i might end up doing is just going to the toy connection and seeing if they will sell me that screw... and possibly a couple other screws too, i need like 1 screw from the floor shifter so i can get 5 others to match and put my shift boot back on....... hopefully the toy connection can help me out...... havent heard too much about them.... and they are kinda out of the way... but if i need to go, i will.....