1987 evinrude spl 88 hp stars nice but dies if accelarate

[racso]

I HAVE ASKED FOR HELP HERE A FEW TIMES AND, I HAVE GOT GOOD HELP SO THANK SO MUCH TO ALL FOR THE HELP....

so this motor let me down the other day and could not get it started .. so I decided to rebuild the carbs and fuel pump also replaced a power pack that looked kind of dry rotted, and just finish I started it and fires right up but when accelerate it dies , it starts right up after , am thinking to replace the fuel line and bulb but other then that I don't know what else .. what you guys think can you all help me again ,, thaks

 

[boobie]

Is the timer base sticking ??

 

[racso]

Is the timer base sticking ??

sticking ? how can i tell if it is... when i started it i went to accelerate it by hand and dint see how high on rpms it gets but it runs nice and then it just dies as i accelerate it

 

[SparkieBoat]

could be a whole bunch of things, fuel line sucking air could do it. follow the instructions in my sig. that will begin to eliminate things and maybe you will find your problem.

 

[emdsapmgr]

You could do a simple fuel pump test. When the engine is running and you are accelerating, have someone constantly prime the fuel hose bulb. This will force extra fuel into the carbs. If it takes off and runs wide open throttle as long as you keep pumping the fuel hose bulb, it's a fuel delivery problem. Which could be a fuel pump issue, fuel hose bulb, anti-siphon valve issue, etc.

 

[racerone]

Trouble shooting on these crossflow engines starts with a compression test.-----------Sudden failure of piston rings is common on these motors.

 

[racso]

Yea ..i did a troubleshoot started with pressure all four check out with 105,110,115,and 120 ..then the spark all jumped the 7/16 gap. I had rebuild the carbs and fuel pump the other day so i went a head and replaced the fuel line ...and it is running good ..it gave me a hard to start once so i look arround and noticed that there was a gap between the shocke lever and the arm that pushes it so ajusted that screw so is tight against it not to push it but with a little pressure so it holds it a bit and seems like it woked ....so will see how it do on the water this weekend ....so thanks guys for all of the imput ..ill keep in touch