What is the spark plug gap for a 2005 Mitsubishi lancer es 2.0l single OHC?

It must be from the rough idling. Check the spark plug gaps and the lead wires if they have good continuity. Check your car manual for the proper gap for the spark plugs. Set it with the use of a spark plug gauge.

Is this the diagram of this engine or do you have the single ohc?
Single OHC engine

check for spark/fuel/fuses

Hope these help.
Single OHC



Dual OHC

.42

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No do not remove OHC pull on the boots Spark plug boots then use a spark plug socket with extension

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hi, in the american database for alldata, there is no lancer in 1990, if your engine is dohc, or sohc though, i checked 2.0 and 1.8, both are 1.0mm - 1.1mm gap. shouldn't be any problem running at these gaps, most every mitsubishi engine runs at this spark plug gap.

if you are referring to the spark plug gap,look for a sticker on the top brace under the hood,or set to .042''to.046'' for OHV engine or .052'' to .056'' for OHC

if it is a 2.2 engine it is 0.06

2.3 and 2.4 OHC Engines 0.050

Its on the back of the gearbox where the output shaft is.