35hp, early 80s johnson evinrude question

[noshelter]

got a question, my engine fires okay, revs and idles alright, only problem is that when i try to fully open the throttle, it starts to hiccup a bit, only at full throttle, or close to, it runs smooth at 3/4, or 2/3 full throttle, any ideas? i've checked the plugs and the filter, they "look" alright, anything else to consider? thank you

 

[noshelter]

Re: 35hp, early 80s johnson evinrude question

please email me if you'd like as i check that more frequently, scottsusin@yahoo.ca

 

[Jwill]

Re: 35hp, early 80s johnson evinrude question

I haven't had that problem with an outboard yet but my motorcycle used to do that.<br />Ended up there was a little water in the carb.<br />I took the carburetor apart and cleaned every hole, nook and cranny with carb cleaner.<br />There should be a screw in the bowl of the carb. Unscrew it and drain the gas into a small clear container. You will probably see a bubble of water mixed in with your gas. <br />I'm no expert but that would be the first thing I would do because its cheap and easy. <br />You can buy a rebuild kit with the gaskets or you do what I did and thats just screw everything down a hair tighter. Worked for me.

 

[ob]

Re: 35hp, early 80s johnson evinrude question

I'm guessing you've got a blocked high speed jet in one of your carbs or a failing fuel pump.Does squeezing the primer bulb when engine is coughing at full throttle change things?

 

[noshelter]

Re: 35hp, early 80s johnson evinrude question

ob, haven't tried that, i could though, any other thoughts anyone? would like to get this cleared up as soon as possible (i'm sure...like everyone else on here!)