Ducktwin

204bk

Recruit
Thread starter
Joined
Sep 3, 2018
Messages
4
Just picked up a 1958 3 hp.Evinrude ducktwin from a friend. It has been three years since he last used it. While looking it over,I found fuel, still in the tank. I removed the carb, and gave it a good cleaning. While trying to start it,I had fuel, and spark. I noticed that, it is not pulling any air in through the carb.I took everything apart again, all the way back to the reed valves, found no problems. The compression is good. Any suggestions ? M/n is 3044 B, s/n B 1535 which I cannot find any reference too. Also the ID tag says made in Belgium.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Squirt some fuel in the carb throat once and see what happens.
 

RCO

Petty Officer 1st Class
Joined
Jun 15, 2016
Messages
350
Had did you decide that it isn't pulling air through the carb? Start with the basics. Check spark. It needs to jump a 1/4" open air gap. If it sat for three years with fuel in it, the tank and carb need to be cleaned- as in carb completely disassembled.
 

tomhath

Master Chief Petty Officer
Joined
Dec 5, 2007
Messages
814
If the compression is good it must be pulling air from somewhere :facepalm:

You might see a spark with the plug out, but that doesn't mean it will fire under compression and with fuel present. Get an adjustable spark tester and see what you have.
 

racerone

Honorary Supreme Mariner
Joined
Dec 28, 2013
Messages
40,028
Air for a compression test can come from the exhaust ports.----Air does NOT need to come through the carburetor to get a good compression reading.
 
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