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run-on, and poor idle 120-130

posted by  rkent47 on  Mon Jun 25 15:00 CST 2012
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last visit: Mon Jun 2 09:45 CST 2014
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You guys and the Yahoo 1800 group are my last hope (you too Walrus)! I am fighting a couple of problems with an engine that I re-built. B20 that did not need any boring; Pertronix; B20e head completely re-worked - injector holes well sealed, etc. My problems, rough idle and run-on. I have re-set the SU's about 50 times, and at present seem to be spot on for lean/rich issues. I can not find any vacuum leaks. The timing also seems to be spot on at 19 degrees BTDC and at 35 degrees when revved up. I have also checked valve lash, both static and while running. I have tried higher octane ethanol (sorry George), and am now running straight 87 octane gas. I am at my wits end!!! If I can get this sorted, I will have to take it to a very high-priced import shop, which will really gripe me. Not for the cost, just the inability to sort this myself.

Any suggestions?

Kent
--
Too much iron, too little time






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