I have injector knock. Did a hand held infrared heat gun test on the exhaust manifold at idle.the front 3 cylinders were from 168-186 degrees. The back 3 were from210-286 degrees.Is this normal??Thanks Dave

 

I'm having the same issue with mine, number 3 and 5 are about 80* hotter. Called up II and they are going to flow test them for me. From talking with them they said it's ball seat errosion (not really sure what that means), I also Ohmed them and same are out of spec, they ohmed at 1.5 while the rest were .5 they are suppose to be between .3 and .7 I believe.