Recently got a 87 lebaron turbo. Lately it has developed a slight miss and wants to stall randomly. Replaced the plugs, wires, cap,rotor. The miss seem to disappear for a while but came back.. Checked the wires and plugs noticed a plug was a little black tightened all the connections to the plugs, took out and cleaned the idle control motor and put it back fired everything up and after everything reset i bumped the timming up slightly. Ran way better. Yesterday it started to miss again so i figured since it had platinum plugs in it maby it did not like them so i changed them over to just a standard plug. I also did a seafoam treatment to it. Now its running worse than ever. I did notice that the air box is flooded with oil and so is the air filter 9 it must be doing this at hwy speed as no oil is flowing through at idle. PVC valve seems to be good. Its not showing any signs of a blowen head gasket or bad rings. Has no excessive blow by so im stumped?
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12.57@104 :O) 
