
Hose connections use a poor crimping method that allows the hose to rotate. Because of this you can't tighten it enough to close the spark plug hole and if you tighten it you can't unscrew it because the tube rotates, which happened to me. I had to pull the tubing out of the crimp and use the easy way out to get the connection out. Also there is no suitable adapter for my b18c spark plug. I had to use an adapter from my compression gauge.

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