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1987 mercury classic 50 45hp problems

dodgetruck51

New member
where can I find Idle tube. I cannot get the motor to idle right, its really fast and it will not go to top speed. things I have done replaced fuel tank, all hoses and fittings, rebuilt fuel pump, check compression ( 115 on all cylinders) checked plugs, wires and connections. Any help I can get will help.
 
The idle tube is under(or is) a brass screw at top of the carb. If it's plugged up, all hell is loose at idle speed.

Jeff
 
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