SOMETIMES WHEN I START MY TRUCK IT "SHUDDERS" AND A WHITE SMOKE WITH A SULFUR LIKE SMELL COMES FROM UNDER THE HOOD. IT WILL THEN START LIKE NORMAL.
1997 Chevrolet Silverado • 17,000 miles
It has done this about 4 times. After the fourth time it would not start. I took it to a shop and they replaced the ignition module and it started again, but it did the smoke thing again. I'm stumped please help. Thank you
April 24, 2012.
April 24, 2012.
Sulfur is usually the cat converter overheating from too much unburnt fuel. You need to have the injector system checked for running rich like a coolant sensor failing.
Possibly but a shop with a scan tool can monitor it for you to verify.
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