Put premixed gas in oil injected merc.

[johnrthomas]

I put two gallons of premixed gas for the kicker in the tank for the oil injected engine. It is a 1996 40hp Merc. It ran rough and I realized my mistake. I rebuilt the carbs, replaced the fuel lines and flushed the tank. It is still running rough. It idles fin but will only ht a top speed of 10mph compared to before at close to 30 mph. A friend mentioned a sensor that calculates how much oil to inject that might have gone bad. Any suggestions appreciated.

 

[56 rude]

Re: Put premixed gas in oil injected merc.

did you replace the spark plugs?you might have a dead one ,as for doing everything that you did just because you had premix in a tank was really not necessary atall.cant hurt but not needed.many injected motors.. required you to add oil to the gas when breaking in.

 

[JB]

Re: Put premixed gas in oil injected merc.

I really doubt that the premix had anything to do with the engine dropping a cylinder, which is what your trouble sounds like.

 

[saumon]

Re: Put premixed gas in oil injected merc.

did you replace the spark plugs?you might have a dead one ,as for doing everything that you did just because you had premix in a tank was really not necessary atall.cant hurt but not needed.many injected motors.. required you to add oil to the gas when breaking in.

Right, not necessary. The ONLY thing that too much oil can cause is fouled plugs, that's all.