2006 Optimax going through a set of spark plugs every year 1B425291

[Djones03]

I use NGK IZFR5G (gapped at .032-.033, checked with feeler gauge) on a 200 optimax. This started 4-5 years ago and each year I have to change the spark plugs, if I don’t at some point, the motor will not start, it may sputter, but will not start. Once I change the plugs, no issues for a year. I use quickleen and quickcare, DFI oil. Nobody I know is going through spark plugs like this, could there be an underlying issue that is causing me to have to go through spark plugs.

[lpugh]

You should be replacing them every 365 days or 100 hours whichever comes first

Post some pics of the old ones
Yes there could be other problems adding to this

[SilverFox579]

^^^^+1^^^^

Plug gaps on Iridium plugs are set with WIRE gauge ONLY...NEVER use a feeler gauge.

[apdriver]

^^^^+1^^^^

Plug gaps on Iridium plugs are set with WIRE gauge ONLY...NEVER use a feeler gauge.

I thought it was just the go/no go method which uses a special feeler gauge.

[06 SB]

Yup spark plugs need changed annually. I had a 2010 Opti 200 and it’s performance change would be noticeable after annual maintenance. There is nothing wrong with your motor.

What octane gas are you using? Are you using Quickleen?

[Bryanmc57]

I thought it was just the go/no go method which uses a special feeler gauge.

It is, but it's not a special feeler gauge it's just a round wire gauge.

[Djones03]

Thanks guys. I just changed them. I will start next year with a wire gauge. I use 87 octane and quickleen.

[06 SB]

Do you have a Smartcraft gauge to see the coolant temp? If the motor is not coming up to temp, it can make the motor run rich. It may be worth checking/cleaning the thermostats. It is simple but you will need a couple of cheap gaskets.

[EuropeanAM]

Do you have a Smartcraft gauge to see the coolant temp? If the motor is not coming up to temp, it can make the motor run rich. It may be worth checking/cleaning the thermostats. It is simple but you will need a couple of cheap gaskets.

+1

Up to temp on both banks- properly gapped and proper gap, plugs torqued to 20 lbs/ft, appropriate fuel, additives and oil, and limit IDLE speed run-time. These are the most common items you can do to limit carbon levels and help keep your engine happy.

[SilverFox579]

It is, but it's not a special feeler gauge it's just a round wire gauge.

^^^^

Had a windstorm Sunday night that knocked power out until yesterday and just now getting caught up here.