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1) You need to read the code to see what problem is indicated. Some auto parts stores, e.g. Checker, will read the code for free.

2) Are the white deposits on the contacts? Does the cap have aluminum inserts? I've seen white deposits deposits in other vehicles in the past which are corrosion of the aluminum. I'd look for a cap which is not black (the carbon black in black caps can carbon track)and has brass inserts.

3) How many miles?

Steve L.
 

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Just a thought based on some other threads. Did you install original equipment plugs or Bosch? I've had no problems with Bosch but the general consensus is that the 4 cylinder engine does not like them. If you did not install original equipment plugs you might want to. Did the onset of the problem match up with the plug change?

Steve
 

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Rebuilding a Q-jet was not fun and you had to do something about the well plugs in the carb body so they would not leak. Q-jets were fun to play with though, by swapping metering rods and jets.

I'd clear the code with a reader if you have one and see if it repeats. There is some info on the web that suggests the oxygen sensor might be a culprit but I'm not ready to agree with that.

Steve
 
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