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70hp mercury outboard

R

Ricardo Antoncich

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my boat was running great and

my boat was running great and then it started to feel like it was running out of gas well now it run ruff and it don't have power when i start to go i replace the spark plug and clean the carb with carb spary still on power it start right up but under a load it will not have any power
 
RICARDO...If your compression

RICARDO...If your compression is good and spark checks ok you may consider a reed valve problem. Look for water beads on a spark plug or fuel spitting out of your carb opening. Depending on the model year of the motor this can be an easy fix or if the motor is older(no oil injection) the powerhead would have to be torn down for this repair...DJ
 
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