Ethanol

[krkreass]

Folks,
I need expertise. I've read thousands of postings on ethanol and have not found the secret. I have 2007 EFI 70hp. I run my boat each week and inevitably after motoring out of my canal and throttling up, the engine spits and sputters for about 10 seconds before running normal.

I fill up 5 gallons at a time and add Quick Clean or Seafoam and an ethanol treatment- the gas sits for no more than 5 days without a start up or run.

I have a water separator and all filters are clean. Pick up filter in VST is spotless.

I have determined that the gas is gumming in the injectors- how can I prevent this or is there a way to run the engine dry without harming EFI's? Or is someone using a product that really does the job.


KK

[mitch]

kk don,t run your motor dry as the pumps really hate it... have you checked that your thermostat is working and engine getting up to operating temp

[krkreass]

Yes- the engine gets to operating temp- I assume the thermo is working. The engine has 25 hours on it and it's thrown no codes.

[mitch]

kk You could also try some ring free it is a Yamaha product it works well but is not cheap. when you say that the engine is at op temp to you measure it with a thermometer or just feel .

[larrysuzuki]

Misfire

How many hours on engine. If it has 200 hrs or more you need to replace plugs because they will cause a misfire when cold or for the first throttle. If plugs are new you need to check the fuel filter inside the vapor seperator. The intake needs to be removed. I am in miami and service Suzuki's.