1ls spark plug gap
#1
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1ls spark plug gap
Hello CL,
I've been changing my spark plugs and gapping them at .044 for my 92 ls400. It has 237,800 miles on it. I've been gapping the plugs at .044 because that is what my local auto parts store says is spec gap for this car. My question is what do you guys with a 1ls gap your spark plugs at? I read in my owners manual that the gap is .043 for this car. Can anyone chime in and clarify this for me.
I've been changing my spark plugs and gapping them at .044 for my 92 ls400. It has 237,800 miles on it. I've been gapping the plugs at .044 because that is what my local auto parts store says is spec gap for this car. My question is what do you guys with a 1ls gap your spark plugs at? I read in my owners manual that the gap is .043 for this car. Can anyone chime in and clarify this for me.
#3
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I haven't checked or gapped plugs in ages. What comes from the box my memory recollects at .045. .003+/- on properly running factory ignition system is inconsequential. You are at more risk of having wider tolerances by re-gapping them that small amount than leaving them straight from the box. The factory sets these for the typical application, they are ready to go.
#5
Lexus Champion
if you are using an OEM brand (which means ONLY Denso or NGK) as you should be, and you are using the correct plug for your car, the factory original correct gap of 1.1 mm (0.0433 in.) will be already set by the plug manufacturer for you!
Last edited by LScowboyLS; 03-18-12 at 11:12 PM.
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