gapping the spark plugs on 1990 Infiniti Q45

what should the plugs be gapped at

by in Cleveland, OH on April 24, 2009
1 answer
ANSWER by , April 24, 2009
The spark plug gap should be ..039" to .043" of a inch. The Iridium or double Platinum plugs come pre set. I like the Q45 but have seen random misfire caused by bad ignition coils, bad injectors, and or bad ECU (computer). I hope your car has no problems and you are just performing maintenance.