This is topic Spark plug wear question in forum Tech Talk at Northern California Ford Owners  .


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Posted by cpthowdy (Member # 10055) on :
 
Looking into buying a used motor
4.75L stroker MMR 1000S shortblock
9.5:1 Compression
NEW Cobra iron block
Manley Pistons fly cut for valves
.20 over
9.5:1 compression
ARP main & head studs
MMR Side bolts
ARP 2000 rod bolts
Clevite main & rod bearings
Total Seal file fit rings
Felpro head gaskets
Cobra oil pan

Motor has about 1000 miles, and am wondering if this normal wear on the spark plugs?
I'm waiting for the exact compression numbers but dude said its at 155-160.




Thanks cafords
 

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Posted by kuku93 (Member # 14014) on :
 
When you smell it you can tell if there's gas mixed with it. Smell it and see what it is and there's a lot that can work with it. But from the pictures it seems ok.
 

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Posted by Blow_U_In_Reverse (Member # 12298) on :
 
White = Lean
Black = Rich
Honey/Golden brown = Good
 

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Posted by Martinna (Member # 12493) on :
 
Pictures look okay. Reading spark plugs is for old men what reading tea leaves is for old women. Today we have cheap wide band O2 sensors that can tell your precisely if you're running rich or lean.
 

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