OBD-II is for 1996 and up vehicle models.
Variable valve timing (VVT) systems aren’t only used to increase performance. Variable valve timing (VVT) benefit to fuel consumption and emission are slowly leaving the (EGR) valve in the past. In theory, maximum overlap is needed […]
Mechanical engine misfires can contribute to low compression (bad cylinder, piston rings, sticky or leaky valves or even valves out of adjustment) will affect the amount of air coming into the cylinder which will cause […]