2006 Jeep Grand Cherokee Laredo 3.7L V6 the 2 rear spark plugs are not firing, do you know what could be the cause and any remedy recommendations that you have
I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don't prefer... rest is up to u.. U can also get free manuals
Try swapping the coil on plugs on the non-firing cylinders with coils of working cylinders. There are six (one on top of each spark plug) I would bet that is your issue. But even if it is, I would buy 6 new coils (and new plugs while you're at it) because the other ones aren't usually that far behind.
At night or in a dark garage, remove one of the coils - insert a sparkplug and lay it on top of something on the engine that is grounded. Have a friend roll the engine and see if you actually have spark. If in fact you do have spark, you could have issues with the valves. Possibly collapsed valve adjusters/lifters or broken valve springsAt night or in a dark garage, remove one of the coils - insert a sparkplug and lay it on top of something on the engine that is grounded. Have a friend roll the engine and see if you actually have spark. If in fact you do have spark, you could have issues with the valves. Possibly collapsed valve adjusters/lifters or broken valve springs
If there in fact is NO spark then it is either burned or corroded wiring somewhere or error in PCM. This would likely result in a CELIf there in fact is NO spark then it is either burned or corroded wiring somewhere or error in PCM. This would likely result in a CEL
Answers & Comments
I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don't prefer... rest is up to u.. U can also get free manuals
Try swapping the coil on plugs on the non-firing cylinders with coils of working cylinders. There are six (one on top of each spark plug) I would bet that is your issue. But even if it is, I would buy 6 new coils (and new plugs while you're at it) because the other ones aren't usually that far behind.
At night or in a dark garage, remove one of the coils - insert a sparkplug and lay it on top of something on the engine that is grounded. Have a friend roll the engine and see if you actually have spark. If in fact you do have spark, you could have issues with the valves. Possibly collapsed valve adjusters/lifters or broken valve springs
If there in fact is NO spark then it is either burned or corroded wiring somewhere or error in PCM. This would likely result in a CEL