[DML] Rich Mixture + hard start
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[DML] Rich Mixture + hard start



Okay, so #02566 (automatic) on the Oregon coast has been running just 
fine on its weekly outings until recently on a cold (for the coast this 
is near 32 F) day when I started it normally, and while letting it come 
up to temperature in the garage it started running rough while doing 
its normal idle hunting. This roughness includes lots of black smoke at 
every RPM. I have read through many of the old posts about causes and 
cures and did not see an obvious clue as to what could change sitting 
in a garage for a week.
This morning it would barely start and is very rough at idle with black 
smoke. I did not let it run very long in this condition, but probably 
had a total of 5 minutes of rich mixture and smoke. The second time I 
tried to start it today it would try to start, but would not quite make 
it. Has the O2 sensor been killed by the rich mixture and should it be 
replaced before moving on to other things? Where is the best place to 
start running down this issue?
Lee Edmonson
Vin #02566



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