Same thing happened to my with my 86es, it was a stuck injector. The way I figured it out was by cleaning all the sparkplugs then starting the engine for about 2min then pull out the plugs and which ever one is covered in fuel is where you have a bad injector that is stuck open.
I could have installed a different injector but decided to upgrade to 1.3M
Also take your ICV and spray it out with break clean until it is clean then hook it up with out the hoses and when it is running spray in it. this will make sure it is clean. Just so you know make sure you are out side and no one is around because break clean stinks bad when burnt.
Also the root of all your problems can be from your temperature sensor If you have not replaced it I would first thing and make sure the connection is good and clean. And check the connection under your intake for water and corrosion.
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Running rich; Running out of ideas
ok so ive searched and searched and spent endless hours looking around my engine to find anything that seems out of order, and still have not found my problem. my car is running rich. on cold start and worse on warm starts. and sometimes it acts fine, sometimes it will almost not even run. when im driving it and give it gas, it will stumble and then when it gets to higher like 3000 rpms it starts to act a little better
ive already replaced the fuel injector o-rings on friday and did a big tune up to it about 3 weeks ago with i replaced the distributor rotor & cap, spark plugs, oil, oil filter, air filter, fuel filter, valve adjustment, and new valve cover gasket and water temperature sensor for the computer. i know some of this stuff might not help the running rich issue. and when i disconnect my ICV when its doing this, and then reconnect it, the problem will go away but then come back later on.
so im lost. what are somethings that can help it lean out? please help me out!
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