Automotive Forums  Where Car Enthusiasts Go to Discuss Cars Online

Cylinder #6 is not firing.  Detected by rough run.  Pulled the wire and no change in idle. New wires and plugs.  Getting good spark at the plug.  What could be causing that on this V6?  Throttle body FI.

Thanks  

You next move would be to do a compression test. What did #6 plug look like, oil? burnt? carbon?, coolant?  

80 psi.  Looks clean.  New plug.  Some oil on threads though.  

Upon further thought, probably a rod has broken or moved.  Intake valve stuck closed.  On the plus side, getting better mileage with the 5 cyl!