A preventive maintenance item that gets overlooked is your ignition coils. We often think about changing our oil, the spark plugs and those brittle heater T's. Ignition coils can fail when you least expect it. Often times the ignition coil will produce a weak signal, or completely fail and sometimes it'll produce an intermittent signal. If you decide to replace your spark plugs, evaluate your ignition coils, they may need to be replaced. Below is an Amazon link to my store where you can purchase the Denso ignition coils and NGK spark plugs.
https://amzn.to/3sW4koA

Let me know if you have any questions.
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Thanks again
John
LXPlore
#lx470
#100serieslandcruiser