thick white smoke out tailpipe,plugs black, wont idle


Asked by Mar 25, 2016 at 10:29 PM about the 2008 Chrysler 300 Touring

Question type: Maintenance & Repair

just started one morning, came out to start it and this happened, already
changed ecm, had lean and app  codes, voltage to low on app1 and app2
erased but neither has come back, all pids look good actually.

1 Answer

Tom Demyan

White thick smoke generally means your engine is burning coolant, indicated a faulty heat gasket. That will give you your idle issue. Plugs black also mean your engine is running rich. Perform a cylinder pressure test.

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