Valve train noise or injectors

[rover3l]

I have posted many times before about my vibration problems. Anyway I got to thinking that I also have a valve train noise that I assumed was one of the lifters. However, could this type of noise also be caused by a faulty injector? I ask this because I was thinking that I may have a power balance problem that is causing the vibration and that this might be injector related.

I realize that this is a vague description but the vibration seems to be better and worse almost depending on the weather and whether the car is cold or heated up. Today I notice that it was still there all the way through the speed range even at a constant 70mph. Other times it seems really bad at lower speeds particularly on acceleration and then disappears at high speed

[DAEDALUS]

A cheap mechanics stethscope will really help pinpoint the noise. Stick it to the injectors and to the valve cover, and see which noise sounds more like what you're hearing normally. Faulty injectors probably aren't louder than working ones.