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Lacking power

J

jerry dee

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"i have a 1977 evinrude outboa

"i have a 1977 evinrude outboard 70 hsp that i took to the lake today,the motor runs fine ,it will idle for a week without sputtering but when you push down on the throttle it only goes about 8 mph the shifter box is working the forward and reverse normally, has good compression and the carbs have been rebuild,all fuel lines are o.k. and new fuel..what could be the problem ? thanks jerry dee"
 
"My 175 is doing the same thin

"My 175 is doing the same thing, but my Left side isn't getting fire. I have changed my powerpack, and coils. Also spark plugs. Not sure what else it could be. I was looking into maybe the shift inter. switch?? or the stator?"
 
do you think that the carburat

do you think that the carburators are not syncronized ?
 
"William.....


(Marine

"William.....


(MarineEngine.com - Properly Inserted Post)

Go back to the previous page and click on the "Start New Discussion" hyperlink that exists in the "Blue Border".

This will allow you to enter your question/post under your own title heading which will then appear at the top of the list.

As it now stands, your post is buried under the post of another member.

When time permits, visit my store at: http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store"
 
"like i said earlier,before wi

"like i said earlier,before william interruped , do you think the carbs need to be syncronized ? i also noted there is a spring on the left side when facing the carbs that is not hooked to anything,i don't know if this means anything or not ?"
 
"If the carbs open and close a

"If the carbs open and close at the same time, and start to open (throttle butterflies) when the scribe mark on the cam is aligned with the center of the carburetor throttle roller, they're in sync.

Now, did you read my initial reply?"
 
I HAD THIS HAPPEN AND IT WAS A

I HAD THIS HAPPEN AND IT WAS A PIN HOLE IN THE DIAPHRAM OF THE FUEL PUMP JUST SOMTHING TO THINK ABOUT.
 
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