Quote:
Originally Posted by JFP in PA
No, coil packs cannot alter the cam deviation values.
The car obviously has misfires on cylinders 1 and 6, which is more than enough to cause the car to code and trip the CEL. The bigger issue is the cam values, which are both out of range (+/- 6), usually a sign of excessive slop in the cam drives. This can result from a myriad of causes, including the VarioCam units, tensioner pad wear, the tensioners themselves, etc.; or from the beginnings of an IMS issue. But as you have indicated that the deviation values remain steady, I would think that the IMS is not the issue here.
Unless you are prepared to get deep into cam timing diagnostics, with some potential for opening up the engine should your tensioner pads or VarioCam units need work, you need to take this car to a qualified indy for further assessment.
|
What constitutes misfire? Wrong timing of spark (Ingition), or detonation? How is misfire sensed?
Also, how could cam timing being out of spec cause misfire?
Thanks
Threaded Mode
