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Old 03-01-2015, 08:53 PM   #4 (permalink)
JohnTrang
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Join Date: Sep 2014
Location: North Alabama
Age: 52
Posts: 47
Drives: 2015 370Z Sport Tech
Rep Power: 11
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Maybe the car wash has an under body spray that gets an electrical component wet.
When I clean an engine, the car will idle rough if the spark plugs/distributor gets wet.
By the next day it's OK, or after several hours drying in the sun.
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