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K-Jet rough/lumpy idle, looking for troubleshooting tips 200 1980

posted by  drj434343 on  Sat May 5 10:14 CST 2012
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last visit: Thu Oct 24 09:46 CST 2013
[RELATED]

I have to resurrect this thread to post the solution to the original problem. Its a little embarrassing, and very strange.

It turns out that the car didn't really have a lumpy/poor idle, it's just that I was trying to get the darn thing to idle at 300-400 RPM! I was using the dash tach to measure engine speed, which turns out was reading over 100% higher than reality. As soon as I used another engine speed meter, my issue became painfully clear.

Now that I understand the true engine speed, it idles smoothly at 500 RPM and above. Simple but strange fix!






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