Hi everyone ! I have had a couple of vehicles in recently, one Toyota hiace and a Fiat Ducato based motorhome. Both were around 6 years old and both had only done 20 odd thousand miles. Both came in for a missfire and on both simply removing the electric plug and refitting cured the fault. I couldnt see any sign of corrosion on the wiring connections.
Is this just a case of a poor connection even though it looked good or am I missing something ?