need mechanic in jackson ga

[crazyhunter]

i need someone who knows alot about outboards that can come to lake jackson georgia. i have a 1990 merc 40hp 4cyl 2stroke and i dont have a clue whats wong. the motor will not rev high at all. it use to push my boat about 30 now it runs about 7. i have cleaned the carbs mutiple times replaced the plugs all wiring is good. good compression. all my fuel lines are good and its getting fuel. i have also ajusted the carbs mutiple times trying to get it to run right and nothing. if anybody could give info on a mechanic or somthing i could check please let me know.

 

[CharlieB]

Re: need mechanic in jackson ga

A failing fuel pump will not supply enough fuel for a motor to make power and speed.

Squeeze the primer bulb and see if the motor will respond, if so, rebuild the fuel pump.

 

[crazyhunter]

Re: need mechanic in jackson ga

i have tried to it stays pumped up

 

[CharlieB]

Re: need mechanic in jackson ga

What I meant was that squeezing the primer bulb while the motor is experiencing the problem will assist the fuel pump to move more fuel. If it is a weak pump causing your problem then as you are 'assisting' the fuel pump the motor would pick up power and accelerate to a more normal state.

If this makes no difference then you need to start testing the ignition system to find out if the high speed windings are generating enough voltage to make a strong hot spark at speed, as a weakened spark will also limit power and speed.