Engine Performance problem
2007 Dodge Ram V8 Two Wheel Drive Automatic
my truck is trying to stall and now I have black smoke coming out the exhaust can a bad ignition coil cause it to do that?
Saturday, May 23rd, 2009 AT 11:20 AM
1 Reply
JACOBANDNICKOLAS
MECHANIC
109,885 POSTS
Black smoke usually indicates a rich mixture. I would start by checking fuel pump pressure to make sure the regulator is working properly. Also, while you check that, pay attention to pressure drop off. If it falls too fast, there may be a leaky injesctor.