50 hp evinrude bogging

[dabluflash33]

My 50 hp is bogging real bad when WOT and sometimes it decides it wants to gradually run nicely. It has good compression and good spark according to the mechanic. I put new coils plugs and wires in. He said the carbs look fine. I just dont understand why sometimes it would run great and moments later it barely moves. If you could help me out that would be great.

 

[dabluflash33]

Re: 50 hp evinrude bogging

model number is...50573B

 

[Boss Hawg]

Re: 50 hp evinrude bogging

Try pumping up you bulb when not running good
Could be fuel leak or air leak--

 

[dabluflash33]

Re: 50 hp evinrude bogging

could you explain further for the air leak.

 

[dabluflash33]

Re: 50 hp evinrude bogging

Several websites say it could be the power pack or the points. If anyone has insight on what it could be that would help me out a lot. If you need further explanation of what is happening to my engine that would be fine. I am an amateur so feel free to shift me in the right direction.

 

[crxess]

Re: 50 hp evinrude bogging

year model?

 

[rick74631]

Re: 50 hp evinrude bogging

you might check the fuel line on the carbs my boat run good the it slowed down and later took off again then slowed down my gas hose was sucking shut put new ones on runs good good luck hope you get up an runing right

 

[dabluflash33]

Re: 50 hp evinrude bogging

1975 50 hp evinrude 50573b

 

[dabluflash33]

Re: 50 hp evinrude bogging

the motor has
new lines
coils
plugs

 

[crxess]

Re: 50 hp evinrude bogging

Electronic ignition.
You could purchase an inline spark tester and have some watch it while under load and bogging. Test 1 plug at a time.

If Spark is strong, either Plugs are breaking down or Carb issue exist.

 

[dabluflash33]

Re: 50 hp evinrude bogging

The place i took it too said it had good spark and good compression. The plugs, wires and coils are all new.

 

[dabluflash33]

Re: 50 hp evinrude bogging

What plugs should I be using? I have the champion plugs but ive also been told to use the NGK's/ What is the ideal plug for this motor. 50573b 1975 50 hp

 

[dabluflash33]

Re: 50 hp evinrude bogging

I put new plugs in and no change. Where to go from here?