1985 70HP Evinrude--Need advice

[Printman1250]

My 1985 Evinrude 70HP (E70TLCOS) has got a Problem. What it did about 6 months ago is it would start great, run strong for 20-30min., (or sometimes all day) and then go into funk mode and start to stall when just starting to come off idle and speed up--OR--it would just die at high speed and go down to idle and idle fine. What I have done is : 1) Rebuilt the fuel pump and replaced fuel filter and all fuel lines and installed new pulse limiter. Plugs are new and carbs were were rebuilt at a good maine dealer. To eliminate any other areas I also swapped out the portable fuel tank, fuel lines , and primer bulbs with new units. Just took it out with the old primer bulbs and tank--it died---swapped out with new tank and lines--it died again. Water pump output is very good. Thottle advance and ignition advance looks good also. When it dies @ WOT it acts like it is fuel starved but dies quick and I drop it to idle range and it idles fine. This one has got me as it is so intermittent. Any help would be appeciated. P.S. not a VRO system. Also pumping primer bulb and /or hitting electric choke does not help---wow,what a pain.

 

[Daviet]

Re: 1985 70HP Evinrude--Need advice

I have solved some intermittent problems by going through the electrical system and cleaning all wire connections and making sure all grounds are clean and tight. It might not help but at least you have eliminated that much of the system.