1970 Johnson 60hp STILL will only run at idle

NZ-Kevin

Petty Officer 3rd Class
Joined
Mar 2, 2010
Messages
96
Here is the continuing saga of my engine. I bought it secondhand and it had been stood a few years due to a blown amplifyer. I fitted a replacement amplifyer and it ran. But whan I took it on the water as soon as I opened the throttle up it died. So following good advice here I stripped and cleaned all ther carbs suspecting they were dirty with old fuel. Tried the boat again and still it only ran at idle, died every time I tried to oped the throttle. Still suspecting fuel starvation I took the fuel pump off and replaced it with a known good pump. Just got back fromthe boat ramp where, yet again, it will only run at idle -once I open the throttle it dies.:mad:

Any suggestions, please -I'm running out of ideas
 

bigpoppakdog

Chief Petty Officer
Joined
Jul 9, 2008
Messages
437
Re: 1970 Johnson 60hp STILL will only run at idle

from the info provided, I would bet on a leaky gas line. Throttling up and its trying to suck more gas, but is sucking in air causing it to die. Could be electrical as well.
 
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