fluctuating rpm

Here is an example of what I mean by "fluctuations": my video PROBLEMS: Constant engine fluctuations during all types of driving/idling. Random engine surges (ie: turn on truck and rpms jump to 2500 or while cruising, rpms will randomly jump wayyy up there momentarily). Stumbles, definitely...

Hi Folks, So Chancho has been running top-notch for the past few weeks and I couldn't be happier! I took him on his first real back country adventure since I did a ton of work to him and he crushed it. This was a relief, considering I'm a beginner mechanic and have very little faith in my...