Vstech,

I've seen TDC whistles for gassers, but I've heard that they're not particularly accurate. I've never used one myself. With an opening as large as an open glowplug hole, would I be able to feel air blowing through the hole? If I'm turning the engine over using the crank bolt it won't be rotating very quickly.

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1982 300D, black w/ palomino leather, 203K
2001 E320, champagne, 105K (Mom's)
1999 Dodge Dakota, squeaky & battered, 142K