Ok so i had a Mini me setup until the number 1 Cylinder rod of my D15b7 broke. so i was gunna put in a D16a6 Block. As i am looking at my Z6 head the intake valves of 2, 3 and 4 cylinders are a different color then the cylinder 1. does this mean i have a tunning issue? cylinder 1 was running differently somehow?

 

what color are they?

black is just your usual carbon deposit but it should not be too crudded over.
white is usually a good reason of going lean
and water/coolant deposit stain might be noticeable if you ever floated your head

 

cant you see the picture? the number one cylinder is black the other three cylinders are white. so cylinder one must have been running richer somehow :/. its just to odd that the number 1 rod broke and looks like it had a different mixture going on.

 

cylinder 1 looks like it was being steam cleaned by water

 

Wow!! very informative post! tahnks that makes perfect sense!! because when my rod blew it craked the water jacket near the sleeve area and water mixed with my oil. so yeaah it was steam cleaned lol

 

no actually i cant tell if theirs a pic in the threads lol. im overseas pakistan and the goverment computers spam everything so it wont load sucks man...