Douglasdzaster
Well-known member
- Joined
- Sep 19, 2020
- Messages
- 780
- Reaction score
- 461
- Location
- Smithville,Texas
- LOCATION
- Smithville, Texas
Hello everyone, I have a question about my 1992 40 hp Yamaha which has three carburetors.
I completely rebuilt all three carburetors 2 years ago. Installed a complete new fuel system with FW separator and all as the motor had not one filter on it when I got it. Replacing everything but the carburetors bodies. Ran only non ethanol premixed fuel with an additive (probably overkill) Star Tron HD marine and synthetic 2 cycle oil. After enjoying it several trips I found several things that needed attention.
I had to do some work on the boat itself which turned into almost a complete rebuild. Long story short I haven’t started the motor but once in a year 6 months ago. Reason is I have to premix the fuel and I don’t like keeping premix stored long periods of time. Even though with the additive the gas may be good the oil might not. Also the plastic tank vents routinely. And if it’s not kept full there’s condensation. Etc. etc.
I should have mixed a little occasionally to start the motor but didn’t.
Alllllll That being said.
I’m ready to run it and wanted y’all’s opinion. I had pulled the drain on each carburetor after running it last time but didn’t run it dry first and pulling those plugs doesn’t drain 100% of the fuel.
The clear filter on the side of the motor still had clean , fresh smelling fuel in it when I just pulled it. Should I take a chance and mix fresh fuel and run it? Or should I change the fw separator( which has just a few hours on it),flush the lines , pump fresh fuel in the carburetors, drain then prime and start?
I’m trying not to have to pull and clean the carburetors and maybe kits. Which are three times the price they where 2 years ago. And I just spent a lot doing all the work I did (trying to ease the heat from my lovely wife, it’s time to stop for a while and use it before continuing) Lol.
I’m hoping I don’t have any corrosion in the carburetors or stuck floats. I can’t remove the bowls without pulling the entire assembly. From the outside they look good but that’s not seeing much when a carburetor is concerned.
Another option is to go ahead and pull the carburetors and clean everything if there’s a chance that running it may cause damage. I’m trying to avoid it but if it’s best it’s worth spending the time rather money later.
My cover also goes over the motor and the boat has been covered every evening when I stopped working on it. Never got rain in it the whole time.
I’m going to go ahead and change the lower unit oil since it’s been in it a year. And had just installed an all new water pump before all this was started. Again hopefully the impeller didn’t dry rot or something. I NEVER dry start the motor like I see some do. I worry about the seconds it takes the water to start coming out of the p hole. Lol
Basically I had done a ton of neglected maintenance on the motor when I got it. New thermostat , corroded bolts etc. I can pull the cowling off now and it looks new. What I couldn’t get to by hand I cleaned with q tips etc. then protected the whole top end by spraying with fluid film. I haven’t had any dirt or things that I can see get past the cowling and sticking to the Fluid film. Every few months I would clean it all off and re apply. At first I had tore torque some things because after a while with the film on it they loosened up a little. But only once l also check everything’s torque frequently when I was running it regularly.
I appreciate any opinions and advice on how I should proceed. That’s my history on it.
If there’s any tips about anything else I should do before starting I would love to hear them. Like I said I’m just trying to address anything that I can prevent from needing to repair because I started it without checking something.
I wrote another novel. I apologize but I get carried away on here sometimes or worry about not providing enough information.
Thanks everyone. If it wasn’t for the site here there are a lot of work on the boat I couldn’t have done. Everyone on here is awesome for helping me out the past couple years.
I completely rebuilt all three carburetors 2 years ago. Installed a complete new fuel system with FW separator and all as the motor had not one filter on it when I got it. Replacing everything but the carburetors bodies. Ran only non ethanol premixed fuel with an additive (probably overkill) Star Tron HD marine and synthetic 2 cycle oil. After enjoying it several trips I found several things that needed attention.
I had to do some work on the boat itself which turned into almost a complete rebuild. Long story short I haven’t started the motor but once in a year 6 months ago. Reason is I have to premix the fuel and I don’t like keeping premix stored long periods of time. Even though with the additive the gas may be good the oil might not. Also the plastic tank vents routinely. And if it’s not kept full there’s condensation. Etc. etc.
I should have mixed a little occasionally to start the motor but didn’t.
Alllllll That being said.
I’m ready to run it and wanted y’all’s opinion. I had pulled the drain on each carburetor after running it last time but didn’t run it dry first and pulling those plugs doesn’t drain 100% of the fuel.
The clear filter on the side of the motor still had clean , fresh smelling fuel in it when I just pulled it. Should I take a chance and mix fresh fuel and run it? Or should I change the fw separator( which has just a few hours on it),flush the lines , pump fresh fuel in the carburetors, drain then prime and start?
I’m trying not to have to pull and clean the carburetors and maybe kits. Which are three times the price they where 2 years ago. And I just spent a lot doing all the work I did (trying to ease the heat from my lovely wife, it’s time to stop for a while and use it before continuing) Lol.
I’m hoping I don’t have any corrosion in the carburetors or stuck floats. I can’t remove the bowls without pulling the entire assembly. From the outside they look good but that’s not seeing much when a carburetor is concerned.
Another option is to go ahead and pull the carburetors and clean everything if there’s a chance that running it may cause damage. I’m trying to avoid it but if it’s best it’s worth spending the time rather money later.
My cover also goes over the motor and the boat has been covered every evening when I stopped working on it. Never got rain in it the whole time.
I’m going to go ahead and change the lower unit oil since it’s been in it a year. And had just installed an all new water pump before all this was started. Again hopefully the impeller didn’t dry rot or something. I NEVER dry start the motor like I see some do. I worry about the seconds it takes the water to start coming out of the p hole. Lol
Basically I had done a ton of neglected maintenance on the motor when I got it. New thermostat , corroded bolts etc. I can pull the cowling off now and it looks new. What I couldn’t get to by hand I cleaned with q tips etc. then protected the whole top end by spraying with fluid film. I haven’t had any dirt or things that I can see get past the cowling and sticking to the Fluid film. Every few months I would clean it all off and re apply. At first I had tore torque some things because after a while with the film on it they loosened up a little. But only once l also check everything’s torque frequently when I was running it regularly.
I appreciate any opinions and advice on how I should proceed. That’s my history on it.
If there’s any tips about anything else I should do before starting I would love to hear them. Like I said I’m just trying to address anything that I can prevent from needing to repair because I started it without checking something.
I wrote another novel. I apologize but I get carried away on here sometimes or worry about not providing enough information.
Thanks everyone. If it wasn’t for the site here there are a lot of work on the boat I couldn’t have done. Everyone on here is awesome for helping me out the past couple years.