96 chevy burb missfire

Helping with my son's burb.
#1 Blown head Gasket-Had it replaced.While torn down cleaned fule injectors as they wher coverd in black grunge.Put it back togather and
obd scanner said roter error replaced roter and cap with new one
#2 scanner says miss fire in #6 cilender-now after a week of bumping heads togather i came here.The truck ran fine up till now.
now it idle's fine with slight miss but when you put your foot into it it bogs down and run's like sh----t.
Any help or sugestions whould be happy to recive.
I dont know much about newer cars.As i have a 89 mustang,89 camaro
68 firebird.all cars i can work on without all the scanner stuff.
thank's for any help in advance.... mondow:banghead:
the code number is 1345

Welcome to AF.

Need all the code numbers to be able to further help you.

the code number it read's 1345

the code number it read's 1345

Code 1345 is Cam and crank sensor correlation.

Crank/cam sensor correlation known as camshaft retard will have to be set on a engine capable Scanner that will read out camshaft retard.
If you do not have one borrow or rent one or find a repair shop that does
Needs dist turned until the camshaft retard reading is as close to 0 degrees neg or post as you can get it.

Let us know how it goes.

But
First make sure you have the dist set right.

http://files.automotiveforums.com/gallery/showphoto.php?photo=51302