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The tool you seek is commonly known as a borescope, which should allow you to inspect both sides of the valves if you can get the scope end to reach there. Here is a nice YouTube video showing the inspection of the piston surface and cylinder-facing side of the valve: https://youtu.be/LgbhePnUHiI


I am a Pilot Car driver and have taped my sign on my pick up several times. When I remove it and the glue is left I use WD-40 and it removes the glue. It alse removes tar from your vehicle too.


You could try using Isopropyl alcohol. It is the main component in allot of electronics cleaners since it evaporates quickly and leaves no residue. Quoting wikipedia: Isopropyl alcohol dissolves a wide range of non-polar compounds. It also evaporates quickly, leaves nearly zero oil traces, compared to ethanol, and is relatively non-toxic, compared to ...


More than likely the problem is a leaky valve cover gasket. It's just something which happens over time. The old one becomes hard and cracks, thus oil starts dripping. Over time, this collects on the different parts with whatever amount of dirt is available and, voila! You have gunk all over the place. First thing to do is thoroughly clean the affected area ...


Since the car started fine after the first try, there should be nothing to worry about. The thing to remember is: different car; different situation. If it continued not to want to start, then you'd have an issue.

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