How big is the spark plug gap on a GMC Sierra?
I have a 2001 GMC Sierra 1500 C3, cat list .60 gap but every auto store both online & brick and mortar store says .40 is the gap. Most I find, since my truck come with double Platinum plugs, are pre gapped do not gap. Just get a good pair of NGK or champs set to cat recommendation. If it hesitates or if it runs high idle after adjust accordingly.
What’s the gap on a new spark plug?
The new Spark Plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the Gap of the Spark Plug has also changed. • The new Spark plug, P/N 12571164 with AC Delco P/N 41-110, is Gapped to 1.01 mm (0.040 in) when the Spark Plug is made.
What should spark plug gap be on Vortec 5300?
FWIW, it looks like newer engines specify .040″ If I were in this situation, and being the lazy slacker I am, they’d stay at .040″. Besides, as they erode with use, the gap is going to increase naturally.
What kind of spark plug do I need for my GMC?
This iridium spark plug from HiVehicle is suited for an extended range of 5.3L and 6.0L engines. If you have a vehicle from Chevrolet, GMC, Buick, Hummer, Isuzu, Cadillac, or Pontiac with the engine mentioned above, then you will not regret if you buy this professional-grade component.
What’s the gap on a GMC spark plug?
Due to the different tip design, the gap of the spark plug has also changed. • The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01 mm (0.040 in) when the spark plug is made. Notice: The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result.
How big is the gap on a Vortec spark plug?
The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made.
What should the gap be on a 5.3L plug?
The plugs that they sell for my truck with the 5.3l are gapped at .040. According to my owners manual the gap should be .060. Can anyone recommend plugs and wires for my truck. Thanks Most owners will tell you stick with ac delco plugs and wires. I believe there is a tsb that changes the gap from .060 to .040.
Do you have to change spark plug gap much?
Did you have to change them much? 0.40 to 0.60 is a pretty decent amount of change. If they came pre-gapped, and you did not have to make much if any change to get to 0.40, you know you got it right. For iridium plugs, they do not recommend changing the gap, as the electrode is very brittle and easily damaged.