Posts: 3480
Location: Elk River, Minnesota | Hiya,
The only thing I can think of is the plug maybe wasn't gapped the same as the others causing it to burn less efficiently?
I know some engines like the Evinrude E-tec engines need their plugs indexed correctly to run efficiently. I believe they are set to have the open side of the plug's electrode facing the injector port for the cylinder.
I've not heard of needing that on any 4-stroke engine, so it's a shot in the dark as to whether this would be the case or not..
Being a fuel injected engine, I would say it definitely is not a fuel related unless the injector was a touch dirty. If the engine is running well, I doubt it would be that issue...
Steve |
