Spark Plugs
Oil Fouled
Oil Fouled
Carbon Fouled
Too Cold
Too Cold
Cold or Rich
But OK
Cold or Rich
But OK
Cold or Rich
But OK
Good
Good
Good
Good
Real Good
The Best
Best
Best
Best
Good
Good
Good
Kinda Hot
But OK
Hot or Lean
But OK (?)
Hot or Lean
But OK (?)
Hot or Lean
But OK (?)
Too Hot or Lean
Pre-Ignition Range
Too Hot or Lean
Pre-Ignition Range
Too Hot or Lean
Pre-Ignition Range
Too Hot or Lean
Pre-Ignition Range
Too Hot or Lean
Pre-Ignition Range