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Old 10-01-2012, 09:23 PM #1
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Recently purchased

I recently purchased a 1994 4runner 3.0. Has the usual ware for its age. Trying to figure out why its idling a little rough. I have replaced the plugs , cap and rotor button. The wires appears to be ok. Yet it still idle rough. Would like to know what else I need to check or replace.

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Robb in Riverdale
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Old 10-01-2012, 09:35 PM #2
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Check for vacuum leaks and do a compression test.
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Old 10-02-2012, 02:51 PM #3
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Vacuum leaks, clogged EGR are real common causes.
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Old 10-02-2012, 04:14 PM #4
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You might check the motor mounts and vacuum leaks(egr, fuel inj, secondary crankcase system, pcv, etc..). If it has not been done in a while, you might consider replacing the plugs, filters, wires, etc..
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