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1978 85hp evinrude power loss at wot

M

mr.bill

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1978 85hp rude runs great for

1978 85hp rude runs great for about 5 minutes then at full throttle it will bog down power up bog down power up so on and so on we cleaned carbs checked timing and replaced 1 coil that had a repaired wire any suggestions
 
"Mr Bill.... In addition to Ze

"Mr Bill.... In addition to Zeke's reply, check the plug on fuel connectors if they exist. If the "O" Ring seal leaks on those connectors, it will allow the fuel pump to draw air, resulting in a slow surging action.

Joe (30+ Years With OMC)"
 
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