99' Valkyrie/North Central Indiana
You can gap them @ .030 also. I 2nd. going to NGK Iridium especially on vtwin's.
The threads are a but oily, but nothing crazy. The tips are more of a combination, there's definitely some build up of a little soot.The electrode and ground looks good except for the deposit at top of thread. Is that oily or sooty? Based on your other issues I would clean the plugs and reinstall and then check in a few hundred miles. If it is still oily maybe a valve problem and if sooty maybe too rich but for now I think they are great so no problem. With a reasonably well tuned engine I get about 20,000 miles from the original spec spark plugs so I stick with them. Iridium you may get 100,000 miles but I hate to have a spark plug that outlives me.
You need a thin walled socket as such in the toolkit otherwise your socket may be sitting on top of the spark plug and just turning.... But I just keep turning and turning the wrench and the other ones aren't budging. Sometime it squeaks a little. I'm wondering if whoever installed these ones possibly stripped them or if the thread is slightly crooked. The others came out with such ease after only a few turns so I haven't exactly figured out what's going on with these deep ones....
I ordered one this afternoon. Unfortunately, the stock toolkit wasn't with the bike when purchased. A lot of what I read online mentioned a thin walled socket being necessary.You need a thin walled socket as such in the toolkit otherwise your socket may be sitting on top of the spark plug and just turning.
Hey, thanks for the advice. I will definitely check them around then. I did put them in this morning and went for a quick ride. Definitely seems to accelerate a little smoother. I can still feel a small something at 20mph, but no way near as bad as before. Maybe it's just me and something I'm doing. Also, the air filter was changed just before I bought the bike. I'm not sure if it is K&N or HiFlo, but it looks to be one of the two. As far as the oil or filter, last I checked the oil looked good, but I haven't checked the filter. The seller said he changed both, but I will most likely do that again when the season starts for my own piece of mind.If you already bought the new ones, may as well use but I would still pop them out in 3-4 hundred miles to examine just because i don't like that oil/soot. I would also suggest using a top tier fuel (PON 87), good oil and stock air filter.
Hey Phan,Looks like you are on the right track. What did you gap the plugs to? The low end of the specs I hope.
I would definitely change the oil and filter unless you know the previous owner well. If the bike is all stock, no exhaust, intake, or carb mods, I would return to using the stock Honda air filter.
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There are, but there's no mention of an oil change or carb cleaning. The owner said he did the oil change himself. I added a half bottle os Seafoam with my last fill up, but unfortunately it's winter here so my rides have been few and far between. As for the carbs, they were never discussed, so I really don't have any idea of when the last time they received any love is. I have been watching a lot of videos on cleaning them. I'm thinking as long as I don't mess with the sync screw maybe I should be okay. But I'd be lying if I said it didn't make me a little nervous diving into it. I've only even changed a single carb on a moped, never a dual or on a serious engine like this. But it does seem to be the next logical step in getting the bike in better running condition.You mention there are service records so if they include a recent oil and filter change then I would not worry, Also that air filter looks good. As mentioned, maybe poor quality fuel was the reason the plugs looked oily as switch to a name brand for a while. The slight hesitation now sounds like gum in carbs so without a full carb cleaning, I would just try Seafoam or Berrymans or just a good fuel like Chevron and see if that clears up the hesitation.
Hey man,I suggest getting a 14mm copper oil plug washer instead of using the factory aluminum variant as they don't fail from wear and being over torqued. Just love the carbs with Seafoam/Berryman B12 if its running well. If it's not broke, don't fix it. One thing you can/should do that's very important, revise the 3 yellow wire stator plug connection with good quality industrial butt splices and shrink wrap them. So many electrical issue's can happen at this plug connection failure.