Trouble again

[jeff6898]

1979 Evinrude 85hp 85999R


Boat has been running great for the past month. Was running 4800 rpm wot around 42mph. Took it out yesterday and when putting in full throttle to take off then engine would rev real high then take off after about 10 seconds or so. Now at full throttle it reads 5500-5800 rpms and 30 mph and it seems to surge now. Any ideas? Whats been done in the last 2 months

carbs rebuilt
2 new coils
new wires
new plugs
2 new power packs

 

[HighTrim]

Re: Trouble again

I would start by testing the prop to ensure that it is not spun.

Draw a line across the hub and prop, then run it until you hear it 'rev'. Pull it out and observe the line. If they are no longer lined up, the prop is spun and will need to be rebuilt.

 

[jeff6898]

Re: Trouble again

I will do that thanks. I went ahead and took the prop off just to inspect the hub. Noticed there was a good amount of fishing line tangled on the prop shaft behind the washer on the back end of the hub. Didn't see any rubber pieces. HUb semed solid but will test it.