Evinrude 235

[keysrat]

Re: Evinrude 235

I replaced both the top and lower fuel pumps with new ones and removed the electric fuel pump. The same thing happened. This time a small piece of rubbery plastic came out. This piece of rubber is kind of pinkish orange in color. It is ruffly triangular and a 1/4inch long. I rechecked the fuel lines and they seem to hooked up right. I do not undersand why I am getting excess fuel only in that #6 cylinder. What else could cause this if the pumps are good and the carbs are good?

 

[Walker]

Re: Evinrude 235

Don't know that it would fill the bottom with fuel that fast, but you need to take the screws out of the small hoses and rebuild the recirculation system correctly.

 

[Dhadley]

Re: Evinrude 235

I think the recirc system should be put back correctly also but some of the early motors never had that system and I dont think thats filling number 6 with fuel. For the time being we need to figure out why it fills #6 so quickly with so much fuel.<br /><br />If we have new pumps and it still only fill #6, I would disconnect the pulse lines and try starting the motor. Youll have to cap off the pulse fittings so it doesnt suck air. You might also swap the bottom carb with one of the others. The manual bulb will be the fuel pump.<br /><br />Somewhere, somehow weve got fuel going directly into #6. We need to trace out the lines starting at the tank and see where it goes. It'll get fixed. We just need to go slowly and take the right steps in order.

 

[jy118lfd]

Re: Evinrude 235

Just a thought but does this motor have a primer choke system. I know that one line is tee-d and one by itself, could the primer be leaking or the switch be in the manual on mode?

 

[Dhadley]

Re: Evinrude 235

Jon you are right, that would be a problem if the primer stuck. And the 82 did come with the primer, not the choke. However, both outlet lines from the primer would have to be hooked up to number 6 and the primer be stuck in the open mode or manually turned to the "On" position. <br /><br />The electric pump would indeed keep fuel flowing in that scenario. After the electric pump was removed, every time you pump the bulb, it would pour gas into #6.<br /><br />Keysrat -- thats something to look at. The lines are small and it would be an odd situation but its possible.

 

[DHPMARINE]

Re: Evinrude 235

Pinkish orange rubber pieces should not be in the fuel lines.My guess is it comes from old fuel pump check valves.If you found one piece,you may have more.If a piece is stuck in a float/needle valve in a carb,raw gas will enter the cylinder.<br /><br />DHP

 

[keysrat]

Re: Evinrude 235

Ok, I swapt the bottom and top carbs the #6 got fuel in it again. I then disconnected the bottom pulse line and plugged. The engine started! I did not run the engine to long, didn't want to upset the neighbors. But when I shut it off it kept smoking and some black sludge came out of the exhast reliefs? How is the engine sucking fuel from the pulse line if the diaphrams and check values are good? Am I getting some kind of vacum effect? Could this be caused by air getting into the system?Is it safe to run the engine for any length of time with the pulse line plugged?<br />Thanks again, Dhadley <br />You are the man!

 

[Dhadley]

Re: Evinrude 235

On the hose you can run the motor as long as the water is getting to it. <br /><br />OK. With the pulse line disconnected it did not fill up with fuel. Thats a clue. <br /><br />Are you positive the lines are routed correctly? If so, hook up the pulse line again and try to start it. If it puts fuel in #6 again, it has to be the hose routing or another bad pump (not likely but possible I guess).<br /><br />The only other (unlikely) thing I can think of is there was a tremendous amount of fuel in there and it just took time to get it all out.<br /><br />The smoke and sludge is to be expected at this point.

 

[keysrat]

Re: Evinrude 235

I am going to take a closer look tomorrow and run it on the hose for a bit. For now I am going to go with the idea about excess fuel needing to work its way out. The excess fuel was caused by a busted diaphragm and an electric pump forcing fuel in. I am going to reconnect the pulse lines tomorrow and try again. Both the pumps are new. When you are talking about the hoses hooked up correctly are you talking about the main fuel line connecting to the top fuel pump swivel nipple (fuel in), the hose connecting the fuel pumps together, the pulse lines connected to the cylinder and the bottom pump fuel out to the vertical fuel manifold? If I incorrectly hooked the fuel out to the cylinder and the pulse line to the carbs I would have a similar problem to what I am experiencing. The carbs would not get fuel and the #6 would get lots of fuel and possibly the #4 if I also hooked the top fuel pump up incorrectly. Could there be other fuel lines hooked up incorrectly besides the fuel pump lines causing this problem? I know no one likes how the recirculating system is hooked up that’s my next project The other day I was seriously thinking about getting a Holley red pump, everyone seems to have their own thoughts on electric pumps. But I agree with you Dhadley I am just going to run the stock pumps. If I did not have the electric pump this might not have happened in the first place!

 

[keysrat]

Re: Evinrude 235

Thanks for the idea on that piece of rubber DHP. I don't undersand it. It is really rubbery not hard. I am not sure where it came from. I was thinking it might be liquid sealer. I've never used it but this engine has been around a long time. I will keep my eyes out for more. <br />Thanks for all the help and quick respones from everyone. I will check back tomorrow and let everyone know the outcome.<br />Keysrat,

 

[keysrat]

Re: Evinrude 235

Jon,<br /> <br />The primer choke system appeares to be ok. But I did replace the fuel hoses their before this happened so I will take a look and see if I messed something up. I believe the hoses running off the choke go into whats left of the recirculation system which is connected to the #6 and the fuel manifold.<br />Thanks,

 

[Dhadley]

Re: Evinrude 235

If the both small hoses from the primer solenoid go to #6 then youve solved the problem. Each of the 2 small hoses coming from the primer cap should branch off and go to 3 cylinders or 1 will go to a fitting on top of one carb and the other will "T" and feed the fitting on 2 carbs.

 

[keysrat]

Re: Evinrude 235

One hose connects to the recirulation system which is connected to the 3 starboard cylinders. The second hose is connected to the resculation system that is connected to the 3 port cylinders. The 3rd larger hose is connected to the fuel manifold which feeds the three carbs.<br />Thanks, I am going to try to start her up and see what happens.

 

[keysrat]

Re: Evinrude 235

I reconnected the pulse line and she fired right up. I ran her for 5 minutes shut her off and started her up and repeated a couple times. She ran good and I adjusted the idle at 1000rps on the hose.<br />I guess it just must of been that busted diaphram and the electric pump forcing in fuel when I was trying to start her. Unfortunatly I originaly thought I had a bad connection or a bad battery. Due to this I kept trying to start her up during the process of cleaning the connections and charging the battery. This was bad and kept filling up the crank and cylinder with more and more fuel. But this is just a guess. Is their even enough room for all that fuel? I must have drained atleast 4 cups of fuel out of that one hole.<br />Thanks again to everyone, "if" and when this old Rude gives me more problems I hope everyone will be able to put up with me again<br />If anyone has any other ideas about this problem please post them.<br />Thanks,

 

[Dhadley]

Re: Evinrude 235

Thanks for the update. Sounds good. <br /><br />Good luck and write back soon!