My 650 mercury motor Doesnt accelerate in drive

[RyeWilkes]

My 1968 mercury 650 motor runs smoothly. However, when i have it in gear(forward) it stales out if i try and give it any gas with the throttle. Reverse and neutral both work fine but when i put the motor into gear it can only putt along and eventually stales. (Stales faster if i throttle and give it more gas).

Has anyone had this problem before?

Is it a quick fix?

Do you need any other information?

Thanks,
Ryan

 

[nyx2k]

Re: My 650 mercury motor Doesnt accelerate in drive

best guess would be carb jets are gummed up if its a 2stroke.
strip nad clean out jets and carbs

 

[Yesterday]

Re: My 650 mercury motor Doesnt accelerate in drive

I agree with nyx2k - It sounds like a fuel feed issue. I'd add it may be a weak fuel pump.

 

[brnschoneck]

Re: My 650 mercury motor Doesnt accelerate in drive

ahhh ha i jsut had this problem things i did ...Rebuilt fuel pumps wich was the problem i beleive they looked pretty bad ?? Took carbs off cleand them , cleaned points , took screw out of fuel tank to vent more , new primer bulb , and new throttle cable as it was old and freyed ...PROBLEM SOLVED .....

 

[Yesterday]

Re: My 650 mercury motor Doesnt accelerate in drive

took screw out of fuel tank to vent...more

Yeah.... just learned that these larger gas drinkers require that, myself!!!