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Discussion Starter #1
Hi guys,

After several people chimed in on my spark plug photo indicating a lean condition I bought
an endoscope from Amazon for $25.00 with a nice wifi connection and iPhone app. I did a visual
inspection of each piston last night. They all looked fairly identical. Here is a picture. Not the best clarity, but acceptable.
So a few questions:

1. Does this look normal?
2. Is there a way to clean some of the deposits off of the tops?
3. Chevron's Techron? Or other?

Thanks,
Henry
'07 Exige S

1262190
1262191
 

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Completely normal, quite good. Don't touch them. Techron is a light solvent aromatic naptha with some other solvents like toluene. It's good for keeping injectors and intake valves clean.
 
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