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50 HP Merc runs great at idle but dies when put into gear

darryl

New member
Have a 50 HP Merc that idles

Have a 50 HP Merc that idles great but when we put it in gear it either dies or runs verey slugglish.Any suggestions as to where I start looking to fix this problem...
 
"Darryl,

You should always


"Darryl,

You should always check the compression first, and then check for spark.

My guess is that either you have weak or no spark in one cylinder, or a problem in one carb.

If the problem was in the fuel pump, squeezing the primer would cause it to run better. If a carb is clogged, squirting a little fuel into the carb bore ( use a small squeeze bottle ) will usually cause the engine to run better.

Tony"
 
DARRYL OVER THE LAST DECADE I

DARRYL OVER THE LAST DECADE I HAVE SEEN A LOT OF REED VALVE PROBLEMS IF IT IS AN OLDER 3 CYL OR 4 CYL MOTOR TRY OPENING THE THROTTLE WIDE OPEN AND PUTTING PISTON AT END OF CYL AND GET A HOSE THAT WILL COVER OR FIT THE SPARK PLUG WHOLE AND BLOW SMOKE IN EACH CYL IF YOU SEE SMOKE OUT THE CARB YOU KNOW A REED VALVE NEEDS REPLACING OK (THE PISTON SHOULD BE AT CRANK END OF CYL FOR THIS TEST)
 
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