1993 GMC Vandura 2500 Q&A
1993 GMC Vandura 2500 Question: Stalls when on gas black smoke comes out tailpipe some times dies out
Vehicle is over-fueling. I would check vacuum hose that goes to the "map sensor"sor Fuel pressure regulator could also be sticking http://images.search.yahoo.com/search/images;_ylt=A0oG7m2S5otRa1UA4MRXNyoA?p=gmc+van+map+sensor&fr=robo&fr2=piv-web - tramies
Have fuel pressure checked for bleed off as soon as engine is turned off for leaking fuel pressure reg. This is just one of MANY possible causes of 'flooding', mechannic with a good scanner best bet!! Should be codes in computer. We can guess at it from now on and be wrong every time! - pushrod
When was your last tune up? MAP sensor, vacuum leaks and plugs cause rich conditions. - Hal...