yes
sometimes
Yes
its half a turn out of time. plug fouled install a new spark plug
Fouled spark plug(s).
Fouling spark plugs can happen when the tip temperature is insufficient to burn off carbon, fuel, oil or other deposits and causes spark to leach to metal shell...no spark across plug gap will cause a misfire. Wet-fouled spark plugs must be changed as they won't fire. Dry-fouled spark plugs can sometimes be successfully cleaned by bringing the engine up to the operating temp.
Probably a spark plug is fouled up.Also check plug wires if you have an older model.
It is either a fouled spark plug or a timing issue.
The spark plug may be fouled. Remove the plug and check to see if it needs to be replaced.
The symptoms of a fouled spark plug are normally self evident in that the engine will loose power, run rough and use more fuel. Prolonged use of an engine with a spark plug in that condition will most certainly damage the catalyst convertor. Should renew the plugs and have an emissions test done to enure you are still complying with current regulations.
A fouled spark plug will make you lose horsepower if the plug is not producing a good spark. The other thing a fouled plug can do is if it is not firing right the fuel that gets into the cylinder dosent get burned all the way and it is then pushed out the exhaust valve and goes into the exhaust system. from there the fuel can get hung up in the catalic convertor and then burn in the convertor and then you will nedd to replace the convertor it also causes the unburnt gasoline to wash the oil off the cylinder wall and cause undue wear
That is on of many possibilities. See related questions for more info.