Wierd idle?

67 1/2 1600 · Post by **67 1/2 1600** » Sat May 27, 2006 8:19 pm

I have a problem with my carbs once more. I adjusted the mixture because it was off by alot one was lean and the other rich. So now I have them both even, even air flow, but my idle is high, about 1,500, for about 3 seconds, then drops to 1,000, within 3 seconds too then 500, then shuts off. Could I be too rich? I have Keiths ADQ's. I also beleive my oil tops dont have marvel mystery in them. Could that help if I put the oil?

SLOroadster · Post by **SLOroadster** » Sun May 28, 2006 11:23 pm

Your plugs will tell if you are running rich (black) or lean (white, grey or somewhere in between) You are looking for a nice light brown. As for the idle, you need the oil in the carbs, that will cause some very strange things to happen. Start with the oil in the carbs, and go from there.

Will

Post by **RockFish** » Thu Jun 01, 2006 8:13 am

Maybe throttle cable is tight, return springs loose, linkage binding a little ? This might explain the 1500 followed by a drop. Maybe in an effort to correct it you've adjusted the idle screws so low that when it finally settles down the car stalls ?

Cochecita · Post by **Cochecita** » Mon Jun 05, 2006 1:04 pm

Good morning,
I was perusing the tech to see whats been going on and thought I'd add my two cents. If you haven't gotten it fixed yet. I had an issue with enginge racing that was caused by the vacumn advance hose not letting the linkage drop all the way. I'd check for some binding or a stuck choke/ throttle cable that was discussed earlier

A couple years ago, I also spent about two weeks trying to diagnose a carb issue that turned out to be a loose wire in the distributor. It's worth a look and I know mine coincidently appeared right after I tried to adjust the carbs, it did all sorts of weird stuff at idle. Good luck.

Eddie