2 Stroke Outboard - Excessive smoking?

bigdog · 09-09-2013, 08:46 AM

My V4 90 HP Johnson 2-stroke, (oil injected), seems to me to be excessively smoking? This is not a new symptom, as has been this was since I purchased last year.

The engine actually appears to be running smoothly at all RPM's, cruises w/o effort at 4000-42000 RPM. No hesitation at any speeds, and doesn't appear to be consuming lots of oil. Smoking being noticed while idling at dock.

My knowledge of 2 strokes, that display excessive smoking, my first thought would be the engine is running to 'rich'.

Can this be corrected my a simple carb. adjustments ? In my case this would be left to a marine tech, as I have 4 carbs. to be tweeked !

Last, if left unchecked, can running 'rich' cause other issues down the road?

Thanks for your feedback.

Bigdog

09-09-2013, 08:46 AM	#1
bigdog Senior Member Join Date: Apr 2006 Location: Central MA-Gilford Posts: 1,451 Thanks: 345 Thanked 123 Times in 97 Posts	2 Stroke Outboard - Excessive smoking? My V4 90 HP Johnson 2-stroke, (oil injected), seems to me to be excessively smoking? This is not a new symptom, as has been this was since I purchased last year. The engine actually appears to be running smoothly at all RPM's, cruises w/o effort at 4000-42000 RPM. No hesitation at any speeds, and doesn't appear to be consuming lots of oil. Smoking being noticed while idling at dock. My knowledge of 2 strokes, that display excessive smoking, my first thought would be the engine is running to 'rich'. Can this be corrected my a simple carb. adjustments ? In my case this would be left to a marine tech, as I have 4 carbs. to be tweeked ! Last, if left unchecked, can running 'rich' cause other issues down the road? Thanks for your feedback. Bigdog