1970 Evinrude Triumph 60 hp Tests on Land; Dead in Water

[Boating Rookie 81]

We bought and had the engine repaired (3 carb job, spark plugs, keyway, set points, water pump) by a boat engine mechanic. It starts, idles, and accelerates (neutral and in gear) on 5 to 10 minute land tests (using the ear muffs and water supply, of course), but not in the water. We have tried 3 different trips with the same results in the water. It starts, idles a little, then dies. Sometimes we get it to start, idle, then get to a little throttle and it dies or we get to forward and it dies, or we get to forward and a little throttle and it dies. The engine does not seem to be missing and the fuel line bulb is firm, so does not appear to be the problem. What is wrong?

 

[tashasdaddy]

Re: 1970 Evinrude Triumph 60 hp Tests on Land; Dead in Water

timing, and linc n sinc.

 

[Boating Rookie 81]

Re: 1970 Evinrude Triumph 60 hp Tests on Land; Dead in Water

Thank you so very much, Tashasdaddy, for such a quick response.

As is evident from my username, I am very ignorant about boat engines and have the repair work done by "professionals". Is the linc n sync the wire/cable that ties the three carburetor adjustment screws together? If it is, the repair shop mechanic that had done the original tune-up work had previously told my son (the boat owner) and I that this wire/cable was the wrong one, they did not have a replacement, and was not needed anyway, so he did not re-install it. Is this the item that you referred to?

Thank you, again.

 

[ezeke]

Re: 1970 Evinrude Triumph 60 hp Tests on Land; Dead in Water

Linkage and synchronization is series of steps outlined in the factory service manuals for each motor under various headings. The steps are generally found in the General Information or Ignition System sections of most later factory manuals as "Synchronizing Carburetor and Timer Linkage" or words to that effect. The expression may not exist at all in early factory manuals.