Could be your idle valve
it rotates around the sun slightly slanted or on an axle
Could have a bad motor mount
They are slightly insane...
It likes slightly acidic and can even stand slightly alkaline, the range is around 5.5 - 8.0 pH
Objects orbit the Sun in an ellipse pattern - slightly, very slightly egg-shaped and almost in a circle, but not quite.
Saturn is spherical in shape, and slightly elongated around the equator.
It´s around 6.5, slightly acidic.
Tomatoes prefer a slightly acidic soil
Around 80 psi cold at startup, and 40 psi at normal operating temperature.
Around 3% or slightly more.
Slightly smaller around and longer than a railroad spike.
It is called "Normal".