50 Evinrude engine problem

K

KCMCD

Recruit
Joined
Jun 15, 2003
Messages
2
I have a '96 Evinrude SPL, 50 horse. As soon as I take it over 3000 RPMs it begins to chug and of exhust pours out. (especially out of the prop, when the muffs are on.) When its in the water and in gear each time I try to accelorate the RPMs hit 3000 then drop immediatly to about 1000 or less and the engin makes a terrible chuggin sound and won't go. Could it be problems with the carborator? could it have sucked up mud? or low oil pressure? I have no clue.
 
F

Fouled Plug

Ensign
Joined
Jun 29, 2001
Messages
935
Re: 50 Evinrude engine problem

This is a two stroke, correct? You have no oil pressure as the lube is mixed with the fuel (50:1) How is your compression? Plugs look good, spark to all of them? Check the throttle linkage also to see that the carbs open up fully at WOT. Could be carb probs, water in gas, etc.
 
B

blueboat1

Petty Officer 3rd Class
Joined
Apr 29, 2003
Messages
81
Re: 50 Evinrude engine problem

i wouldnt crank it that hard (3000rpms)on the muffs. i have been told it is bad for the motor. Check for air leaks in your fuel lines. simple and cheap thing to check. good luck
 
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