Spark Plugs Condition

acinider

Member

Apr 17, 2002

37

0

17

San Diego, CA

Aug 10, 2015

#1

• Aug 10, 2015

• #1

Hey everyone,

I have 500 miles on my rebuilt 1993 5.0 engine that's running a B cam, dual plane Cobra intake, full headers to 2.5" side exhaust, and a Holley 600 carb in my '66 Mustang. I pulled the plugs yesterday and wanted to get everyone's opinion on how they look.

Thanks!
Brent


Cylinders 1-4 (Passenger side):


Cylinders 5-8 (Driver Side):

 

acinider

Member

Apr 17, 2002

37

0

17

San Diego, CA

Aug 11, 2015

#2

• Aug 11, 2015

• #2

bump

 

squeak93

15 Year Member

Jun 2, 2005

2,256

358

164

Joplin, Missouri

Aug 11, 2015

#3

• Aug 11, 2015

• #3

Hard to tell in pics but they all appear to be brown-ish.

http://www.aa1car.com/library/reading_spark_plugs.jpg

 

acinider

Member

Apr 17, 2002

37

0

17

San Diego, CA

Aug 11, 2015

#4

• Aug 11, 2015

• #4

Yea they are mostly brownish. I was more concerned with the center electrode tip being polished clean and the brownish being lighter in color which I thought could mean I was a bit too lean. Thanks!

 

mikestang63

SN Certified Technician

Aug 27, 2012

11,606

8,859

214

In the garage

Aug 11, 2015

#5

• Aug 11, 2015

• #5

hard to read plugs unless you turn the car off at 6500rpm and coast home, then pull the plugs.

 

acinider

Member

Apr 17, 2002

37

0

17

San Diego, CA

Aug 11, 2015

#6

• Aug 11, 2015

• #6

Thanks Mike, that's exactly what I did so the plugs should be correct. Except that I just drove the car around town, then parked in my garage and pulled the plugs.