Platinum vs Iridium Spark Plugs for the Kawasaki Ultra 310 Jet Ski

[@BrisbaneKawasaki]

Also the NGK CR9EKB which is the copper variant. Shorter life, but replace them every 25hrs and at a far reduced cost compared to the Iridium & Platinum. Whichever of the 3 options you choose, antiseize on the plugs everytime and grease on the boots.

[@JDsWaterWorld]

Didn’t know you could run the copper plug on the 310. I’ll have to get a set to test out. Yes it would be a big mistake to forgo anti-size and boot grease- big regrets later! Thanks for taking the time to watch and leave a comment 😎

[@LifeBeginsOnTheWater]

Glad to hear the iridium are doing well. Nothing cheap about the OEM platinum plugs. Thanks for sharing.

[@JDsWaterWorld]

Those OEM plugs are some of the ‘best’ high performance plugs you can buy is what I’ve been conditioned to believe..lol

[@JDsWaterWorld]

I’m happy selling out the $20 per plug if it means my ski will run its best..the Iridium are supposedly pretty good as well, I’m kind of expecting them to begin showing signs of failure around 15 hrs but we shall see

[@jacobscutzlas8712]

@@JDsWaterWorld any update on the long term performance vs the platinums? also what do you notice when the plugs need to be replaced? reduced performance?

[@RM.Adventures_]

Lets us know how these look the next time you swap them out

[@JDsWaterWorld]

Yeah I’m curious to see if they last a full 25 hours - I always thought iridium was stronger than platinum but I guess the platinum NGK plugs have a thicker coating of platinum that supposedly makes them last longer. If these work, I can save a ton of money cause those stupid platinum ones are nearly $100 a set, 4x a year at the rate inside

[@jerplane400]

Hi JD, let me know how the new plugs perform. Quick question. Do you know what happens to the spark plugs so they lose performance after 25 hors on our ski's? Thanks for all your posts!

[@JDsWaterWorld]

So far the iridium are running great, performance is on par with the more expensive platinum ones. So I think it has to do with the precious metal on the copper tip of the electrode wearing away and getting tarnished due to the high heat, humidity, and turbulence of the combustion process- especially in these boosted engines that run under heavy continuous load. As the conductor wears, the spark becomes weaker…which leads to subpar combustion.

[@JDsWaterWorld]

Great question btw!

[@jerplane400]

Even better answer!

[@jerplane400]

I think I will run the Iridium then. As always, thanks for the reply JD!

[@tommytsadventures]

I'm overdue to replace my plugs. Not sure which plugs I'm going with.

[@JDsWaterWorld]

On the n/a machines you can get away with about 50 hours not changing them…

[@malejc]

Good video . What is the gap for the iridium plug? 😊

[@JDsWaterWorld]

I have another video on gapping here's the link: kzbin.info/www/bejne/bGqwe2qBo7x4fassi=EzQQOULuabTL1L6E

[@malejc]

Thanks I found a little oil on the spark plug when I removed it I have 80 hour on my 2022 310 ultra

[@ericsoumah7510]

Hey JD, would you recommend iridium plugs in my STX 160X, I have 30 hours and fogged up for storage for the winter, next spring I will run the old plugs to run out the fogger, then I will change them to stock or iridium🤙🤙🤙

[@JDsWaterWorld]

Nah those use the CR9EK multi-ground copper plug-same as my Ultra LX- just use those, they are cheap and last 50+ hours on that ski, no need fore the fancier plugs

[@ericsoumah7510]

@JDsWaterWorld Thank you so much for your quick reply, I just love your channel, I am jealous of you being in Florida, how is riding in the ocean, do you get banged around alot

[@JDsWaterWorld]

Haha thanks man, yes I am still sore from my last ride lol! I love the thrill of riding in the chop- it never gets old. It’s nice to take a break and have a fresh water ride now and again, but love the unpredictability and sheer power of the ocean

[@grodriguez4042]

Try the CR9EIB-9 Laser Iridium ! these work great

[@Specialized1993]

Whats the difference between the EIX AND EIB?

[@fzr1000981]

I always thought iridium lasted longer because it's a much harder material. Not a marine application but that was my experience running them in the RX-7. Agree on the 25 hr service life regardless on this ski

[@JDsWaterWorld]

I thought so too…I think with the Laser Platinum they are “double platinum” plugs and that’s why they are more expensive and last a bit longer whereas the iridium have less actual iridium on the electrode

[@joellefaive9681]

I put some dielectric grease on top tip of each plug to. Should I remove everything again and clean it off ?

[@JDsWaterWorld]

Nah it should be fine

[@TheAdventureState]

like BUTTA hahaha. "listen to me, or dont" lol. thanks again for another good video

[@JDsWaterWorld]

Hahahaha

[@Specialized1993]

so did you notice a difference, how did they look after 25 hrs ?

[@JDsWaterWorld]

Both iridium and platinum start to rust in salt water after 25 hours I have found. The platinum you can stretch to about 35 hours it seems, so the platinum last a bit longer

[@malejc]

Do you think it would void your Kawasaki warranty if you use iridium instead of platinum?

[@JDsWaterWorld]

Not unless your dealer is a big doosh

[@JDsWaterWorld]

Who knows...probably not..but depends on what the warranty claim would be for...as a rule of thumb- always make sure your ski is in stock configuration before taking it into the dealer

[@maky18218]

Hello sir i have error code RICH. Can you have me to fix. Kawasaki 310r ultra

[@JDsWaterWorld]

Never heard of that code before..it’s not even listed in the manual

[@maky18218]

@@JDsWaterWorld yes not listed in manual. When i ride my jetski 2hours then error show and the engine not anymore normal running.

[@JDsWaterWorld]

Do your spark plugs have lots of black soot? How many hours?

[@bobb9922]

ngk plugs are junk, do a comparison with other makes, not all oem parts are good as you see from doing upgrades yourself. plugs should last a season at least.

[@JDsWaterWorld]

Not on this ski- 25 hours is the normal service interval as specified by Kawasaki. What is wrong with NGK? Champion does not have anywhere near the options, and most badge brands are Chinese

[@edwardbowles8613]

Exactly. Gotta look at the box and see where they are made. Take Japan over China every time!

[@Specialized1993]

I love wild claims with zero evidence to actually back it up.