Intek twin 24hp OHV engine surges only when hot

[Hammermechanicman]

The plugs you are running are probably ok. You most likely did not have enough air flow and the engine was hot enough to boil fuel in the carb. Taking off the hood allowed enough air for the engine to run cooler. Color doesn't really matter. When the outside temp drops 20 degrees probably can put the hood back on and not have a problem.

 

[sqzdog]

The plugs you are running are probably ok. You most likely did not have enough air flow and the engine was hot enough to boil fuel in the carb. Taking off the hood allowed enough air for the engine to run cooler. Color doesn't really matter. When the outside temp drops 20 degrees probably can put the hood back on and not have a problem.

I am having the same issues with my mower. Did this ever get resolved?

 

[Chucksrt]

I am having the same issues with my mower. Did this ever get resolved?

I've been driving it without the front cover ( the part with the headlights built into it). It runs great as long as I do that. I haven't experimented with cooler spark plugs ir anything else yet.

 

[Hammermechanicman]

If it runs ok with the hood off don't worry about changing the plugs.