1973 Johnson 65 spit and dies

[kennycat]

I bought a 1973 Johnson 65. I cleaned the carbs last year (it had been sitting up a while) and run it the whole summer. I decided to soak & put in 3 carb kits, three new spark plugs, & new fuel lines. Now it runs out of the water OK, and I can see fuel going into all 3 carbs, but when I put it in the water cranks OK, engage the shifter and it dies, repeatedly. I can hear the carbs spit occationally. Acts like it is bogging down. Very frustrating

 

[DJ]

Re: 1973 Johnson 65 spit and dies

kennycat,<br /><br />You cannot effectively set the idle while running on the muffs. The engine needs backpressure (water) on the exhaust system to run correctly.<br /><br />This may be as simple as setting the idle while the lower unit is SUBMERGED in water.

 

[kennycat]

Re: 1973 Johnson 65 spit and dies

^