Logo
FULL SITE MENU

55HP TROUBLES

D

dave

Contributing Member
" MY ENGINE IS OVERHEATING, DI

" MY ENGINE IS OVERHEATING, DID A COMPRESSION TEST AND TOP CLY.GET 10PSI MIDDLE CLY GETS 100PSI AND BOTTOM CLY GETS 100PSI GUESTION:WOULD THAT BE THE CAUSE OF OVERHEATING MODEL IS 55873R SER IS C577610 COULD TELL ME WHAT THE ENGINE IS TOO.

THANKS DAVE L "
 
I HAVA A 1988 MARINER 55 HP.

I HAVA A 1988 MARINER 55 HP. RUNS GREAT FOR ABOUT 20 MINUTES THEN BOGS DOWN AND FEELS LIKE RUNNING ON 1 CYLINDER..I SHUT IT OF AND RESTART AFTER ABOUT 15 SECONDS AND AGAIN RUNS GREAT..I AM THINKING POSSIBLE SPARK PLUG WIRE OR COIL AS THESE ARE 1 PIECE ON THESE MODELS..WHAT DO YOU THINK??
 
Randy... you should check the

Randy... you should check the model year as Mariner did not make a 55hp motor in 1988 as far as I know. You most likely have a Yamaha built mariner. Its possible you have an ignition system problem but if it has merc ignition I would lean towards a switchbox failure...Note make sure you have no fuel restrictions in you line or tank as if is loosing power slowly you might be starving for fuel and creating a vacuum in your tank or line.
 
Back
Top