1972 Johnson 65 HP. Acts like it's running out of gas

Joined
Jul 22, 2012
Messages
9
I have a 1972 Johnson 65 hp 50th anniversary edition. It starts easy and runs fine until you've been full throttle for a minute then it acts like it runs outta fuel. It will do it at 3/4 throttle to but it takes longer before it cuts out. I just rebuilt the fuel pump and it seemed to help a little but didn't fix my problem. I have the carbs adjusted as best I can but not sure if the need synced by a professional. I'm outta Ideas of what it can be. any help would be appreciated. :confused:
 

psycopanther

Recruit
Joined
Mar 19, 2012
Messages
2
Re: 1972 Johnson 65 HP. Acts like it's running out of gas

have you checked the fuel pump filter? mine did the same crap to me today out on the water. like it was running out of fuel at higher RPMS, but found filter was stopped up. lots of crap in the tank it seems. past that, i cannot help ya as i am new to this boating thing :)
 
Joined
Jul 22, 2012
Messages
9
Re: 1972 Johnson 65 HP. Acts like it's running out of gas

The screen is clean but I think I'm gonna drain the gas and check the pickup tube for debris.
 
Joined
Jul 22, 2012
Messages
9
Re: 1972 Johnson 65 HP. Acts like it's running out of gas

I found out the problem. The little brass fitting on the gastank was leaking air. It's running like a champ now.:D
 
Top