misfire?....

dominoy2k1

Member
Contributor
:
02 1500 4x4, mp3
so today i went to get inspection sticker, there was a guy with a mustang he failed because of misfire, anyways this is my question is what exactly does misfire mean? ****** up piston,need new sparkplug, wires,etc?
 
basically it's the fuel and air not igniting on a stroke - ie it doesnt fire and fuel then goes into the exhaust.

can be several things that cause it, mainly it's not enough spark energy to fire the plug and no ignition
 
no worries :D

less likely causes can be not enough fuel (blocked fuel injector), valves not shutting fully (dodgy valve spring), not enough air (air filter)....i could keep going...but spark issues would definately be the first thing i look for in a misfire
 
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