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1990 200 etlg smokey only at idol, oil system question.

Luv2Foot

New member
Motor, Yamaha200 etLg, Serial 666 L 401990 Oil injected v6
Symtoms: Smokes at idol. Does not smoke at idol for first 1-2 min - after running at speed. No power problems, all cyl. fireing at start up, and at speed.
What has been done: Carbs well cleaned. , 2 Fuel pumps replaced, Spark plugs replaced. (no signifigant differance plug to plug)
Its acting like it is always pushing high rpm amount of oil into the gas. (which is why it is ok for the first min or 2.)
Can anyone tell me what to check / replace on the oil injection system? sensor, compuer, injector? or other ideas? I have done the other work myself but never dug into the oil system.
Thanks!
 
Check the linkage between the carburetors and the oil pump. A plastic clip is known to get brittle with age and break. In which case the oil pump defaults to the maximum setting.
 
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