The volume of the cylinder would be doubled.
Volume doubles
It doubles The volume of a cylinder height times diameter squared times 3.14
The volume goes up by 9 times
The volume becomes one eighth.
start with new plugs
Cross-threaded spark plug.
Could be a bad coil (each cylinder has its own) common problem
P1399 is a pending code for random or multiple cylinder misfires.
i tmakes the car judder a i and the engine misfires
Your 1996 Pontiac Grand Prix will experience cylinder misfires when one or several of the spark plug wires are bad. A bad spark plug can also cause the problem.
Chek out the ignition coils, the wires and the spark plugs..
Plugs, wires, coil, distributor, injector, internal engine....
the injectors....
The engine , if it runs at all , will , of course , have misfires and may have a 'backfire' .
Kickback is a slang term for a bribe, or what happens when you spin an aircraft'spropellor to start it and it misfires.
All symptoms of bad timing; stalling on sudden wide open throttle, running rich or lean, misfires, especially continuous misfires on the same cylinder, or just simply not running.