So i have a 97 dodge 1500 2wd 5.2 liter. The check engine light came on and it was running ruff(missing and backfiring through the exhaust) The code that came up was miss fire on # 6 Cylinder.

THINGS I HAVE CHECKED:
-has fuel pressure
-swapped injectors
-changed plugs wires and cap and rotor
-Spark plugs gaped at .40

I found that it only back fires on the passenger side bank, and it also only happens when the car starts to warm up. it does not seem like a mechanical issue because it does not happen all the time and its not RPM related either. Some times it happens under quarter throttle 1500 RPM or at half throttle 300RPM. IT DOES NOT HAPPEN UNDER LOAD AT FULL THROTTLE!
I have thrown in the towel. please some one help!

 

I have also checked the timing which was at 15 degrees

 

Check your plenum.

 

Plenum? being what... The TPS? that would of thrown a code though

 

Do a search here for plenum...... there are many many threads on the topic. Causes all sorts of drivability issues....

 

Check through your intake with a flashlight and see if there is oil laying on the bottum of the inside of the "keg." Its a pos gasket. if you need to replace it get the "hughes" plenum.