Plugs have been good lately ...tan color. Oh and the compression is also good.
Below is from a post a few months ago
cyl 1 120# plug is tan
cyl 2 120# plug is tan
cyl 3 110# plug is black
cyl 4 110# plug is black
cyl 5 110# plug is tan
cyl 6 118# plug is black (little oily)
Idle speed at full temp is 500rpm. Any less and the misses seem worse.
I don't think I am burning any oil (very little exhaust smoke). The plugs are dry for the most part. I do have one that was a little wet (oily) back when I first started to tear into this but that seems to have resolved. (which takes me back to valves again)
I will take it out on a highway run tonight and then check all the plugs when I return to see color and dryness.
I have only been driving this truck this summer and probably less than 100 miles.
There is no history on this truck I have no idea how long it sat without running but it was probably a long time based on the condition of the truck and engine when I got it.
Should I adjust the valves or keep driving and see if some of this resolves as the engine comes back to life? I would think with some good plugs and some bad there is a valve issue.
