Why would a spark plug blow out of a 2002 mercury sable

google 2002 mercury sable 3.0 firing order for info Remove plug wires one at a time and put back on spark plug before removing another wire.

copy and paste
https://www.justanswer.com/mercury/2i0mg-diagram-spark-plug-wires-a2002-mercury-sable-dohc.html


..

Mercury Sable 2000 to 2005 Factory Service SHop repair manual

for the easy solution download the pdf file

PO301 & PO 303 are cylinder misfire in the cyclinders
indicated by the codes last number #1 & #3

Spark Plugs get replaced every 3 years or so & have
nothing to do with resolving any misfire issues, unless
they were in the motor for 80,000 miles & worn out

Spark Plug wire easily last 12 to 15 years or more &
usually only fail because they are mishanded & too often

You problem IF the codes are correct & they are not all the
time,is a bad ignition module or individual coil if that is
what you have

Ouch! Repair requires you to remove the head from the engine and install a Heli Coil. A Heli Coil can also be installed by a machine shop pretty cheap if you take the head to them (off the vehicle of course), which is preferable since you'll want the head checked for straightness before reinstalling it.

I'd have to say it's the blower motor. Does it blow hot air when the heater is on?

Hi

P0305 is misfire in cylinder #5.
P0306 is misfire in cylinder#6.
P0316 is misfire on start up.
Have the plugs on those 2 cylinders, and the 2 fuel injectors checked, also check for spark from the coil on those 2 plug wires.

Please get back to us if you have further query or else please accept the solution.

Thanks for contacting fixya.com

Check the air filter If it's dirty replace it. and replace the fuel filter

You could have a engine misfire ,spark plug's or plug wire . Have you changed these parts lately ?

check the coil and spark plug wires