250 high idle troubleshoot. Please help!!!

[Joe Z]

I have 2 of those motor in my stick c10. I had a issue with the hight idle before and I can't remember what was the cause of it but I replaced all the vacuum lines, distributor components, and a tone of other parts. All you can really do is just check it one piece at a time. Start with the obvious culprits first and it's usually a good idea to have an friend help. I'd start with the throttle cable. Might be sticking on return.
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