TOYOTA 4RUNNER ENGINE NOT RUNNING

My Old Starter Went Out In My 4runner. Installed A New Starter And Car Fired Up With No Problem. The Next Morning, I Was Going To Visit...

The Other Day The Truck Would Bog Down Under Any Load But Would Still Manage To Do Highway Speeds. Now It Will Start But It Will Backfire...

Put New Head, Cam Shafts. Getting Spark, Fuel. Turns Over But Will Not Start. Fuses Tested, All Okay.

Had To Replace With A New Head. Engine Had Gotten Hot An Cracked Old Head. Temp Gauge Was Not Working At The Time. New Head, 2 Cams, Spark...