80 hp mercury no fuel

[B8MAN]

i have a 80hp merc 4 cyl. have 125 psi in all cyls. good spark. rebuilt both carbs. have good spark on all cyls. getting fuel to both carbs. no fuel to plugs. any help would be great. thanks b8man

 

[Maxz695]

Re: 80 hp mercury no fuel

clogged jets would seem likely. If a 2 stroke bad reeds would not allow proper fuel ratio to cylinders but your carbs would be spitting gas out of them. Is the primer bulb getting hard when you pump it up? If your not getting fire with fuel in the carbs then i would start on rebuilding the carbs The alternative is a broken reed valve

 

[B8MAN]

Re: 80 hp mercury no fuel

hello its a two stroke. bulb stays hard. have rebuilt carbs. new floats and seats. can put a rag in both carbs turn over and gas pukes out of carbs . but no fuel in any cyl . taken carbs off and checked for cloged jets every thing seems fine except wont run. tries to start but only a second

 

[Maxz695]

Re: 80 hp mercury no fuel

if you put your hand over he carb and trhe engine is there suction? and after the suction you feel back flow pressure sort of like compression coming out of the carb. Im thinking if gas is puking out of the carb you may have a broken reed valve. Check you transfer case plate and make sure it,s tight.

 

[Faztbullet]

Re: 80 hp mercury no fuel

Highly doubtful you have a valve broken on all 4 cylinders,...what year is it as it sounds like a distributor model with belt timing off..

 

[B8MAN]

Re: 80 hp mercury no fuel

mid 80's no distributor

 

[Laddies]

Re: 80 hp mercury no fuel

Squirt the carbs with some fuel and try to start it if it starts carbs need attention if it don't you have a ign. problem