K K Kip Sep 19, 2014 I have a 1999 K3500 6.5 which lacks power and blows black smoke when accelerating. I think that the vacuum pump is the culprit. Any suggestions as to what else it could be?
I have a 1999 K3500 6.5 which lacks power and blows black smoke when accelerating. I think that the vacuum pump is the culprit. Any suggestions as to what else it could be?