Plug Gap?
#1
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I have a 2010 GMC Sierra K1500 LC9 Flex Fuel OEM AC Delco 41-110 plugs. The factory plugs are gapped at .37. What should I gap the NGK Iridium's to their website shows .40 but factory gap is closer. I have EFILive AutoCal tuned by Black Bear Performance, K&N 63 Series Intake. What do you recommend for the gap of the plugs? I drive the vehicle very hard and it will be tracked.
#2
PT's Slowest Truck
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I have a 2010 GMC Sierra K1500 LC9 Flex Fuel OEM AC Delco 41-110 plugs. The factory plugs are gapped at .37. What should I gap the NGK Iridium's to their website shows .40 but factory gap is closer. I have EFILive AutoCal tuned by Black Bear Performance, K&N 63 Series Intake. What do you recommend for the gap of the plugs? I drive the vehicle very hard and it will be tracked.
Curious why you're changing the plugs on a 2010, you hit 110k already? Iridium plugs go for many, many miles...
#4
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I never pry against the tip of the spark plug unless its a cheap copper plug. I use regular pliers to grip the tip to open the gap up, I went with the OE Laser Iridium Plugs gaped at .038 most were are that there were two closer so I used pliers to open the gap up. The book shows .040 but all the factory plugs were gaped at .038.
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