I am facing RPM problem with my Honda City IDSI Vario 2005. RPM drop when I shift the gear from P, N to R or D and vise versa.. it drop upto 200 and when I release it from R, D to N or P it jumps upto 1500 then get normal in few seconds.. Mostly when AC is on.. but sometime without AC.
What I Did.
Air Filter Change
Fuel Filter / Pump Change
Always use Caltex Havoline Formula 10/30
Fuel High Octane + Super un leaded (Shall) 30:70
Gear Oil Changed at 90k Honda recommended.