Is screw #1 = The Fast Idle screw?
Is screw #2 = Idel screw?
or do I have them reversed?
Here's what I did. During the emissions process I had a local guy play with carb to get it to pass at idle. He said he just adjusted the idle speed screw. But when I got the truck back I pulled the choke and the rpm went pasted 2500 so I pushed it back in. For a few months I drove it around and it was fine I just wouldn't pull the choke out because even at one click on the choke the idle would race up to 2000rpms!
So yesterday I went to bring the idle back down to 650rpm. I did this by turning screw #2. I had the truck running and loosening the screw (counterclock wise) it brought the idle down. But the choke setting was still not working correct.
I started loosening the screw #1 (counterclock wise) while the engine was running trying to determine if that would help. No change started tighting it aswell. Well somwhere in between tighting and loosening the idle race up to 2000rpms and I couldn't get it back down. I had to readjusted screw #2 to get it back down to 650rpm. I drove it around the block and noticed the idle was getting stuck, pulled over and pushed down on some of the linkage and it bought it back down to under 1000rpm. I drove around a bit more and also discovered that I bring the idle down buy pulling up on the gas pedal.
The picture is for reference I had an extra rebuilt carb so I pulled that out to see what hell I was doing.
Is screw #2 = Idel screw?
or do I have them reversed?
Here's what I did. During the emissions process I had a local guy play with carb to get it to pass at idle. He said he just adjusted the idle speed screw. But when I got the truck back I pulled the choke and the rpm went pasted 2500 so I pushed it back in. For a few months I drove it around and it was fine I just wouldn't pull the choke out because even at one click on the choke the idle would race up to 2000rpms!
So yesterday I went to bring the idle back down to 650rpm. I did this by turning screw #2. I had the truck running and loosening the screw (counterclock wise) it brought the idle down. But the choke setting was still not working correct.
I started loosening the screw #1 (counterclock wise) while the engine was running trying to determine if that would help. No change started tighting it aswell. Well somwhere in between tighting and loosening the idle race up to 2000rpms and I couldn't get it back down. I had to readjusted screw #2 to get it back down to 650rpm. I drove it around the block and noticed the idle was getting stuck, pulled over and pushed down on some of the linkage and it bought it back down to under 1000rpm. I drove around a bit more and also discovered that I bring the idle down buy pulling up on the gas pedal.
The picture is for reference I had an extra rebuilt carb so I pulled that out to see what hell I was doing.
