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Cold Idle problem after engine rebuild 200 1990

posted by  oldguy on  Sat Jan 26 15:20 CST 2013
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last visit: Mon Sep 1 13:35 CST 2014
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Finished a Head rebuild, on my 1990 240, changed seals, etc. and on restart engine has a very rough sometimes stall in morning, cold rough idle. I adjusted the idle screw up to give to my son to start driving, and that overdid it, and now that it has warmed up, it has a very fast idle.

Head was milled to max ... cut down 0.020".

I am wondering if I did something I should not have, causing poor cold idle, like using teflon tape on the temperature sensors? or something.

I checked timing, and it is dead on, very smooth, I can tell I have more power.
Also changed transmission seals, kick down cable and filled with synthetic Dex VI.

I did not change any sensors.

Any suggestions...what to troubleshoot... start with temp sensor resistance? O2 sensor?
Thanks - Old Guy






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New Cold Idle problem after engine rebuild [200][1990]
posted by  oldguy  on Sat Jan 26 15:20 CST 2013 >


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