i bought a 99 bravada about 1-1/2 yr. ago...nothing but 1 problem after another continously...i just tried to change all spark plugs and wires...ok..now i changed the first 3 on the left side of vehicle..proceeded onto the right side to change ...and got to the last one and couldn't get at it because the steering box in to much in the way...couldn't budge...so..i didn't change it...well i forgot to tell you ...the old spark plugs...omg!!! really shot to the max...the wires....just about dry rotted...i think seriously...they were never changed ...but my problem is...when i started the vehicle up...terrible!! thick black smoke came out of the exchaust..then it was very like when your sitting in the vehicle..it was virbrating very rough..and it was backfiring terrible ..no power hardly ..omg!!! it runs terrible ..and keeps backfiring ...barely can climb even a small hill...is this because i didn't change the last spark-plug and wire ...which i am going to change ...probably tommorrow...but i hope that is all that is the matter...what's your opinion?
Nov 12, 2007 at 7:37 PM
