1.8 plug change intervals

[Evil Sports]

How often do the 1.8s require plug changes. I know the other motors are a bit finicky about plugs.

 

[McMark]

I've got about 70 hours on the original plugs so far and still runs fine. I did buy a set and will probably change before the weekend just to see if I can see a difference.

 

[Geiger41]

I have 83 hrs. This is my second summer and havent changed them yet or experienced any issues. Ill change them after this season, probably every two seasons.

 

[motorboater]

225 hours on my plugs. Annually check, clean, adjust as per manual. However I have yet to make any adjustments to them, they are perfect.

 

[CDENsomnia]

I change mine at the beginning of each season when I change the oil.

 

[Cobra Jet Steering LLC]

I had just under 200 hours on my original plugs, I just changed them to platinum plugs last week, I do see an improvement at idle, the original plugs always had a bit of a rough idle now it is a lot smoother. Most important thing you can do to your plugs is never seize them from day one, I always do and I never have issues removing them.

 

[Englewoodcowboy]

@Cobra Jet Steering LLC which plugs did you go with? Are they in a 1.8? My dealer replaced mine at 10 hours, had a very smooth idle back, now after a dozen hours on the new plugs, I am getting a rougher idle again. I am curious how long that lasts with the platinums.

 

[Cobra Jet Steering LLC]

yea it is the 1.8 I just posted the make and number on another thread about v plugs a few days ago but I don't remember the number off the top of my head I was looking for n g k but I ended up with motor craft plugs from O'rileys for less than 5 bucks each

 

[Cobra Jet Steering LLC]

this was what I posted on the other thread

those are nickel plugs and the same heat range and throw as the stock plugs so they will work no problem, the ones I was looking for ended up not being a N G K but an Autolite double platinum fine wire plug APP5325 same cost 4.50 each. http://www.autolitecatalog.com/PartDetail.aspx?b=A&pn=APP5325 shows the Yamaha application for pwc and boat engines on the app 5325 plug . got them at Oreilly auto parts.