Mighy Max rough engine

1987 MITSUBISHI MIGHTY MAX
135 MILES • 4 CYL • 4WD • MANUAL
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6780377
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I have a 1987 Mitsubishi Mighty Max 2.6 L 4Cyl w/ Carburetor, It has recently been running roughly and my mechanic said he thought it was the carburetor. I rebuilt the carb, and the symptoms decreased, but did not go away. The engine runs roughly at times (and black soot come out the tailpipe). about 1/3 times when I turn the key off, the engine doesn't completely shut off. I have replaced the plugs, wires, cap & rotor, and rebuilt the carb. What else can I look for?
Feb 23, 2011 at 6:23 PM
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WRENCHTECH
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You may think that you rebuilt the carb but simply changing gaskets is not rebuilding. It requires extensive set-up and testing of the housing to eliminate all the issues. Replacing it with a factory reman is about the only way to resolve the problem.
Feb 23, 2011 at 7:03 PM