My 82 Silverado

[team39763]

I'll check it out today.  I had never seen/worked on a carburetor setup before this truck, so I didn't know how things worked.  I did have the same problem with my other carb, so that makes me think maybe it's my cable/bracket setup.  I'll take some pics to show how I have it hooked up.

[eventhorizon66]

Does anyone here know, what is the best lubricant to use on a sticking throttle cable or as preventative maintenance?  I think I've heard graphite spray before.

Not to hijack the thread, team, but I figured the answer would help you too.

[bigkountry]

I used powdered graphite before, anything greasy will collect dirt and tend to stick. Takes a while but it did help.

[team39763]

I guess I should try that too.  I was trying to fix my tach today - it reads too slow when I'm racing.  It reads fine if I drive normal.  So I read the online directions for it and also checked out the Autometer website.  According to the website, I needed to set it for a 4cylinder motor.  And that's what I did, but it read about 800rpm too high at idle.  So I tried the 6cylinder setting and it's only 300rpm too high, so I figured I'd stick with that, since it should turn on my shiftlight sooner.  I think I'm just gonna buy a new tach.  All my connections look good, so I don't understand why it does that when I'm racing.  I've hit the 6800rpm rev limit with the light set to come on at 5500(light never showed).  Then I hit the 7000rpm rev limit with it set to 6500(never showed).  I know the light works because if I set it for 3000 and rev, it'll light up.  Sometimes it does come on, but I don't know exactly what rpm I'm at until I hit the rev limit.

[CR10]

I donīt think your cable is getting stuck or anything, the idle problem could be just a bent accel cable bracket or that the throttle carb shaft is worn out and air is getting in (vaccuum leak).