April 06, 2016 at 10:59am
I have a 40 hp Merc that hasn't run since November(gas left in tank with no treatment). Put muffs on and started engine with no problems but it wont run at idle. After starting, I can get down to approximately 1000rpm before motor kills. I would like to try running Seafoam Motor Treatment to see if this will correct the issue without having to tear anything down to resolve this issue. Any advise is greatly appreciated.