One of the things emphasized at the engine build school was to apply the proper amount of dope/sealant/lubricant to assembled parts. The inspectors did not like to see messy plugs, nipples, threads and other parts.
The procedure to neatly apply the proper amount is to apply the dope to the 2nd thread from the bottom. Doing this will avoid pushing excess material into the fuel and oil lines. On critical systems such as fuel injection, if you remove bushings or nipples, you need to clean the threads to avoid pushing the older stuff into the lines when you screw the parts back in. Teflon tape does not belong here.
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| On the valley of the 2nd thread from the bottom, apply a light streak of pipe dope using a small wire or toothpick. |
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| After screwing in the nipples, you can see there was just the right amount of dope that rolled onto the fittings. |
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