I am just looking for a little help with a problem I'm having. I was given a 18' duracraft with a DT55 on it but it hasn't seen any use since 1994. My first question is about the age of the engine I was told it was a 1991 but when I've checked the SN I've found it to be an '86. Can someone please double check my findings just for piece of mind? SN 05501-603677.
Secondly, I've covered most of the basics (carb rebuild, impeller replaced, oiled cylinders, replaced some dry rotted fuel line, new plugs, etc); however I'm still having an issue at idle. The engine cranks almost immediately seems to idle a little fast (no extra throttle applied) for about 15 seconds then idles down (a lot like one would expect from a fuel injected car). After the RPM's drop the engine idles great for about 45 seconds (yep you could set your watch by this engine if you wanted it to, it's predictable at least) then coughs once or twice and dies. I've tried to make a few adjustments to the carbs with no notable change. I tried increasing the idle speed with the electronic idle control but I can't detect any change what-so-ever using it. If I ever so slightly increase the idle using the fast idle lever the engine will run until it empties the tank but if I shut the fast idle all the way off, 45 seconds and kaput. I do have one thing that I noticed this afternoon, the fitting on the fuel line that attaches to the engine leaks a little fuel when the primer bulb is pumped hard; however the filter on the engine never appears to run out of fuel. Ideas? Any help on proper technique for adjusting these carbs? Cars I know, fuel injected Mercs and Hondas I know, this little Suzuki I could use a little guidance on.
This engine has only been run on muffs at this point so it appears to run great but we all know how nice an engine can seem with no load on it. I'll have a better report after this weekend I hope.
I also have one two more generic questions for those of you who know these engines. How hardy are the fuel pumps on these Suzuki's? Should I anticipate the need to do a rebuild on it after sitting so long or is it likely to be OK? I've slept on the side of a Bayou before, I really don't want to do it again. The previous owner disconnected the oil injection so could anyone tell me the proper oil ratio before I start putting some hours on this engine? I'm running 50:1 right now as that is pretty standard but I would like some validation.
Thanks ahead of time to everyone that has any input to offer or ideas to try. It's been a long time since I worked on a boat engine that didn't more or less diagnose it's own problems for me, but it's also been a long time since I worked on an engine that was mine.
Secondly, I've covered most of the basics (carb rebuild, impeller replaced, oiled cylinders, replaced some dry rotted fuel line, new plugs, etc); however I'm still having an issue at idle. The engine cranks almost immediately seems to idle a little fast (no extra throttle applied) for about 15 seconds then idles down (a lot like one would expect from a fuel injected car). After the RPM's drop the engine idles great for about 45 seconds (yep you could set your watch by this engine if you wanted it to, it's predictable at least) then coughs once or twice and dies. I've tried to make a few adjustments to the carbs with no notable change. I tried increasing the idle speed with the electronic idle control but I can't detect any change what-so-ever using it. If I ever so slightly increase the idle using the fast idle lever the engine will run until it empties the tank but if I shut the fast idle all the way off, 45 seconds and kaput. I do have one thing that I noticed this afternoon, the fitting on the fuel line that attaches to the engine leaks a little fuel when the primer bulb is pumped hard; however the filter on the engine never appears to run out of fuel. Ideas? Any help on proper technique for adjusting these carbs? Cars I know, fuel injected Mercs and Hondas I know, this little Suzuki I could use a little guidance on.
This engine has only been run on muffs at this point so it appears to run great but we all know how nice an engine can seem with no load on it. I'll have a better report after this weekend I hope.
I also have one two more generic questions for those of you who know these engines. How hardy are the fuel pumps on these Suzuki's? Should I anticipate the need to do a rebuild on it after sitting so long or is it likely to be OK? I've slept on the side of a Bayou before, I really don't want to do it again. The previous owner disconnected the oil injection so could anyone tell me the proper oil ratio before I start putting some hours on this engine? I'm running 50:1 right now as that is pretty standard but I would like some validation.
Thanks ahead of time to everyone that has any input to offer or ideas to try. It's been a long time since I worked on a boat engine that didn't more or less diagnose it's own problems for me, but it's also been a long time since I worked on an engine that was mine.
..... Yep you have a 1986 model .... The ideal air/fuel mix setting on the cars would be 1&1/2 turns outwards from soft stop .... You need to replace that leaking fitting it can cause havoc believe me .... there must be absolutely no leaks on the fuel line ..... The fuel pump is a good system, just replace the fuel pump diaphragm give it a good clean and you are good to go .... 50:1 fuel mix is perfect ...