What's it mean when your spark plugs look like this?



Also my compression test resulted in:
#1 - 185
#2 - 190
#3 - 190
#4 - 195

So after a valve adjustment I think my engine shall be just fine for a good turbo.

PS: Car is a 1991 LS with 150k miles on original motor.

Note: If pic doesn't work still, try this: http://70.16.122.163:870/Plug.JPG


Modified by 91TegLS at 10:07 PM 11/20/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91TegLS &raquo;</TD></TR><TR><TD CLASS="quote">What's it mean when your spark plugs look like this?



Also my compression test resulted in:
#1 - 185
#2 - 190
#3 - 190
#4 - 195

So after a valve adjustment I think my engine shall be just fine for a good turbo.

PS: Car is a 1991 LS with 150k miles on original motor.</TD></TR></TABLE> it means your fucked. i NEVER pulled ANYTHING that looked like a red x out of my motor

 

dude it should work.. I'm hosting the damned thing lol

 

numbers look good, and plugs dont look bad

 

the color doesn't look bad, but i'm pretty sure it's bad that those specs are there.

 

yeah a light brown or light grey color is good as far as i know, those specs don't look normal to me either...

 

I think those plugs look almost perfect. The first 2 rings are dark, meaning you have the right plug for your heat application, and the tip is light colored meaning you are getting a good air:fuel ratio burn(probably).

As for turboing with your setup, go for it You have decent compression #'s, but I still probably wouldn't go much over 7lbs boost.