Evinrude 130 Dies

[Randy000]

Hey all,
I have an 97 Evinrude 130. Sunday I put the boat in the water to make sure it ran good for Monday. Ran good for 4 hours with the exception after idling up the new river for a while when I got to the ramp at idle sometimes it would die.
Took it back to my house checked the plugs, changed the fuel seperator, and flushed the engine. I noticed the RPM was varying a little but didnt think anything of it.
Next day put the boat in the water made it around the corner from the boat ramp and the engine started dying. Every time it died the primer bulb would be soft. Took a ton of starts and playing with the engine to make it back to the boat ramp.
Ive changed the fuel separator again, checked the fuel lines etc. Finally got it primed and a hard primer bulb by putting the bulb vertical.
Ive tried putting my fuel line right into a different tank of fuel.
Checked my compression, all even about 130.
Each cylinder is getting spark.
The engine will start, if you throttle up to 2000 RPM itll vary dropping as low as 1000 or going up to 2500 smoothly. It idles like crap, and sometimes throttling up the engine will just sit at 1000 rpm eventually always dying. Seems to normally not have a hard primer bulb when it dies.
My manual says for timing you need a special tool...
What about the fuel pump, would my symptoms match? I run premix and the oil line is capped. Thinking of taking out the pump and opening it up, should I?
Thanks for any help!:facepalm:

 

[coolbri70]

Re: Evinrude 130 Dies

i'm guessing fuel pump? try priming the bulb while its running, does it stall if you keep the bulb pumped up? inlist a helper to sit back there and be your "fuel pump" if this fixes it you probably need a fuel pump

 

[Randy000]

Re: Evinrude 130 Dies

I should add, I opened the carbs to see the condition, looked clean. Primer bulb is brand new from Evinrude.

Cool, I tried that while working on it in my driveway. Sometimes it seemed to help other times it didnt, but I could of been to late. Id let it run till it seemed to be about to die then pump it.
Open up the pump and see is the diaphragm is torn or whatever?

 

[Randy000]

Re: Evinrude 130 Dies

Also it runs longer in my driveway under no load, than it would in the water, and it runs longer at idle than it does at say 2000. Seemed like its running out/starving for fuel. Idles rough, backfires sometimes, basically sounds like crappy.

 

[coolbri70]

Re: Evinrude 130 Dies

sounds like the fuel pump, maybe a tear in the diaphragm, also had this happen, with a crack in my fuel line on the back side of the engine connector, but the dripping fuel clued me in on that pretty quick, I think you would see or smell it if that were the case. are you using a portable tank? is the vent open?

 

[Randy000]

Re: Evinrude 130 Dies

I dont have any fuel connectors, its all clamped. No leaks and I removed my fuel line right after the primer bulb and put it into a different fuel tank and got no changed in the way it runs. This weekend I'll open the fuel pump and check it out.

 

[Randy000]

Re: Evinrude 130 Dies

Considering Im premixing, are the fuel pumps dependable after a rebuild?, or replace the pump?

 

[Randy000]

Re: Evinrude 130 Dies

I took the pump apart...the diaphragm looks perfectly fine. I'm at a loss. Anyone have any other ideas before I bring it to the shop??

 

[Randy000]

Re: Evinrude 130 Dies

Checked pulse line, checked ok. Checked fuel pressure between carbs and pump. Only about a psi, not sure what it should be. Engine is starving for fuel, can see it lean out rpms going up and then tries to die unless I pump the primer, tried a different primer bulb..

 

[coolbri70]

Re: Evinrude 130 Dies

does gas flow freely from the hose that connects the fuel pump input if you prime it while disconnected? maybe a faulty hose or obstruction, sucked up some crud from the tank. i'm now sure about 2 strokes, but automotive carbs need 4 to 8 psi. 1 psi doesn't seem like much considering the rate at which these motors use gas:noidea:

 

[Randy000]

Re: Evinrude 130 Dies

Yea it flows freely, its brand new as well.
Even though the diaphragm looked fine Im still thinking its the pump but I need to prove it before I go buy a few hundred dollar pump. I thought the pressure seemed kind of low but if its running the float valves will be off their seats and the pump will be pumping fuel into the carb bowls so Id imagine there not to be to much pressure. I called a mechanic and he says they run on low pressure, a few psi. With my gauge it may of been one or two PSI.
I pulled the pulse line off the VRO and ran the engine to check the pulse line, engine ran the same way. I guess the smart thing would be to pull the fuel line off the fuel pump and and see if its pumping fuel, makes sense lol

 

[Randy000]

Re: Evinrude 130 Dies

Cool and everyone that comes across this post in the future. Everything points to the VRO/pump. I put some clear hose on the outlet of the pump and its not pumping out anything, and pulse line seems fine at the pump. Weird the pump looked good inside but who knows maybe I missed something small. Since I dont know why the pump isnt working and diaphragms looked good Im going to change the whole pump ( and still premix lol )

 

[boobie]

Re: Evinrude 130 Dies

I've done that same trick before and found the problem I had. Good Job !