Still bogging down after alot of work

gustafsonerik

Petty Officer 1st Class
Joined
Jun 25, 2006
Messages
238
Hey guys 76 70hp rude ,I replaced carbs twice new fuel pump,coils and switch box also head and exhaust gaskets.im at wits end compression 120 on all 3 cylinder.she runs great when it's idling as soon as you throw it in gear it stalls out if you give it half choke,it will run slowly in forward gear.i thinks it's a fuel problem but I even switched tanks twice,any thoughts???
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Still bogging down after alot of work

Have you owned this engine for some time, and if so, did this engine ever run properly for you, or is this a engine you just picked up recently?

Are the original carburetors on it now? If not, what carburetors are on it?

Did you manually clean the three high speed jets located in the bottom center portion of the float chamber?
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: Still bogging down after alot of work

There was a service bulletin that Mr. Reeves sent me that did fix the problem. Just be very careful when you do the modifications on the pickup tube. Meanwhile I will try to find it.
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: Still bogging down after alot of work

While I am looking the simple fix is to bump the choke as you give it gas.
 

gustafsonerik

Petty Officer 1st Class
Joined
Jun 25, 2006
Messages
238
Re: Still bogging down after alot of work

Your right the carbs are original can somebody tell me how to do the modification on the carbs????
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: Still bogging down after alot of work

Thanks again for the rescue Joe. I just found my copy of the bulletin.
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Still bogging down after alot of work

And now that you have two.... you can work on dual engines.:)
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: Still bogging down after alot of work

Just what I need! More work.

gustafson let us know if it works.
 
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