Recap: high idle (1.5k) and wanted to adjust the air fuel mixture screw. Thankfully I was advised not to by you guys.
Ok, upon investigating the idle adjusting screw, it turns out that was the issue, except it does not end there. Upon looking closer I noticed the vacuum hose to the idle throttle control diaphram is removed and taped up (the prev. owner told me he didnt mess with anything). Obviously there is a reason he did this and I hooked it back up to find out, especially since it was definitely sucking, indicating a vacuum (dont know whether thats high or low). Guess what...the car wont idle at all with that hose hooked up. I dont know why and I need somebody to help me understand.
I'd appreciate it if somebody walks me through when (rpms) that line is supposed to have high or low vacuum, what are the ramifications of the diaphram arm pull that link due to a vacuum, and what conditions would cause the care not to idle. How does this interact with the idle screw and the throttle stop screw (aside: now that I think of this at this moment I backed out the stop screw trying to lower rpms and never brought it back to touch the lever since the rpms were high anyways).
Put my ass in the know!!
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