Hi. I read that when you fog the engine the rev's are supposed to drop as your spraying the lube into the little fitting. the revs on mine don't really drop as your spraying it.
This is what i do
1. Start engine up (hose turned off)
2. Start spraying lube into throttle body fitting for about 5secs.
3. Give it a few short revs(a bit of smoke comes out the exhaust)
4. Shut off engine