mercury 50 outboard trouble

[zabee]

recently serviced and ran well first time but recently had trouble with it dying when giving it revs. only thing i changed was the oil mix. Being an older motor should the fuel-oil ratio be different ?. mixed 50-1 with caltex super 6 with a little bit of a better result but problem still persists.

 

[Laddies]

Re: mercury 50 outboard trouble

You forgot to give the year of the engine if it's neewer that 64 it's a 50 to1 engine it sounds just a little lean off idle.

 

[zabee]

Re: mercury 50 outboard trouble

sorry i couldnt find the year. I have the serial number 6421705 but cant find the listing for it. Do they have an idle screw on them somewhere?

 

[trussmonkey]

Re: mercury 50 outboard trouble

to find your year (goto)
maxrules-

tech specs-

model year guide-

yes, it has an idel adjustment screw (needle)

 

[Laddies]

Re: mercury 50 outboard trouble

It's a 1983 engine-
This is not excatly your carb but the idle needle is the same.

 

[zabee]

Re: mercury 50 outboard trouble

Thanks for all your help guy, cheers

 

[zabee]

Re: mercury 50 outboard trouble

the boat idles at about 1000rpm but dies when it sits on about 1500rpm. messed around with idle needles a bit but still dies. if you give it revs real quick it seams to have no problem. It sort of sounds like its flooding. takes a bit to get started after it stalls. any ideas?

 

[trussmonkey]

Re: mercury 50 outboard trouble

only thing i changed was the oil mix

What mix were you running before?

when is the last time the carb was cleaned?

(possibly a stuck float) does fuel continually run out of the carb when you pump the fuel bulb?

 

[zabee]

Re: mercury 50 outboard trouble

yes fuel will continue to come out of the carb when pumping the bulb

 

[zabee]

Re: mercury 50 outboard trouble

may have run bad oil through it second time checked it and it was a browny colour. could this have faulted one of the spark plugs ?

 

[Laddies]

Re: mercury 50 outboard trouble

If fuel keeps running through the carbs you have a inlet needle sticking