The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving.
If the level of the shoulder is only slightly below the pavement, recovery should be fairly easy. Ease off the accelerator and then, if there is nothing in the way, steer so that the vehicle straddles the edge of the pavement.
Turn the steering wheel 8 to 13 cm (3 to 5 inches), about one-eighth turn, until the right front tire contacts the pavement edge. Then turn the steering wheel to go straight down the roadway.
Chevrolet Cobalt Service & Repair Manual. Engine Valve Seat Grind
It is usually recommended to send
head to machine shop for valve seat grinding.
A suitable valve grinding tool
kit is required to grind valve seats.
Valve guides must be in good condition
before grinding because a pilot is used in guide to center stones. ...