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The NGK plugs should come pre gapped. You can check to make sure they’re even.I hate to ask, but I can not find this on the net anywhere. What is the correct gap for the ar210 spark plugs on a 2021 yamaha?
Thanks
That’s a great routine!My plugs never see 100 hours. Every spring oil and plugs.
Have you ever done a UOA? That’s by far the best way to see what’s going on with the oil and the engine…I may have to send mine off for UOA at the next change. When I was running the high bypass oil filtration system on my last truck I was doing condition based oil changes, the same way the Navy / Over the road trucking industry does their oil changes.Oil is cheap and plugs are cheap. I do a full maintenance every spring and run the whole boat and trailer. I also check the oil at the end of the season before winterizing. I take a sample from each engine and put them in their own glass jars to see if there is any water in them. If there is, then the oil would be swapped out before winterizing. Otherwise once I burn off the gas additive after the first shakedown run, is when I do maintenance.
Well if there was water it would be emulsified I’d think, I applaud your investigative process !I just wanted to check if there was measurable water in the oil so the water won't sit in the block all winter.
The UOA will tell that tale as well. Again, good on ya for looking for it.Not necessarily. Condensation can form while the engines are not running. And mine sit for a month or so just in case I can get out in the fall.