2006 9.9 tohatsu layed down wrong side up

[mikomos]

2006 9.9 tohatsu layed down wrong side up, oil went into cylinder pulled plugs, and added oil, startes now but wont run at trolling speed , cuts out,but runs fine at high speed< any ideas?? i cleaned carb changed plugs,still just above idle sputters and dies....

 

[gss036]

Re: 2006 9.9 tohatsu layed down wrong side up

Mix a can of SeaFoam with the gas and run it, hopefully it will clean things out for you.

 

[pvanv]

Re: 2006 9.9 tohatsu layed down wrong side up

If the carb was left full of fuel during storage, probably varnishing in the low-speed passages. Cannot be reasonably cleaned by "spray can" carb cleaner. Maybe... maybe... will start to dissolve with use, maybe aided by seafoam or similar, but I have not had much luck with that.

Do a proper carb disassembly and soaking in real carb dip, and that will likely cure what ails it.

 

[pscrabber59]

Re: 2006 9.9 tohatsu layed down wrong side up

Same thing happened to me last year when i bought a 2006 Yamaha 25hp 4-stroke. Pulled plugs, dry-fired to kick out oil, cleaned & installed plugs. Fired it up and it smoked a little but after about 30-40 seconds it stopped smoking and i have'nt has a proplem since. I don't know if this info helps but i learned not lay a four-stroke down the wrong way. Good luck