i have a 74 merc 85hp. no gas

xengrns

Cadet
Joined
Sep 23, 2011
Messages
8
1974 merc cleaned fuel pump new lines,cleaned carbs no suction at carb how do you clean reed valves
 

gm280

Supreme Mariner
Joined
Jun 26, 2011
Messages
14,605
xengrns, I don't understand the "no suction as carbs" statement. You should have a fuel pump that supplies fuel to the carbs. The carbs don't pull gas to them, the fuel pump pushes gas to the carbs. So if you are not getting fuel to the carbs, time to check your fuel pump and the entire fuel delivery lines and system from the tank on. . JMHO
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,577
The reed valves in that motor are very robust. They would cause a rough idle. I would put them on the bottom of the list for issue.
Check compression and spark​. Clean carbs next.
 
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