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Rough idle on 1990 240 series 200

posted by  jbr on  Tue Oct 5 05:43 CST 2004
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last visit: Thu Oct 11 06:18 CST 2012
[RELATED]

Having loads of fun trying to figure out the rough idle on my 90 240 4cyl.
It started running rough at idle 2 weeks ago. I have replaced spark plugs/ignition wires/cap/rotor and cleaned the idle motor and the AMM (with carb cleaner). I put new seals on all the injectors and it still has a missfire during idle and even misses slightly when I increase the idle speed. It seems to run fine at hiway speeds. Where should I direct my trouble shooting? There are no error codes at all. THANKS






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