Fuel primer inop

[Bracketracing]

Ok I’m lost. GM service manager and tech for 40 years. I have a 93 200 evinrude. The fuel primer will not squirt fuel electrically. Manual squirts fuel and fires right up. The switch is good it will light a headlamp. I’ve also hooked direct 12 volts to solenoid. I’ve replaced primer with one from Amazon. The new primer after it wasn’t working I disassembled to be sure it pulls down and it does. Just no fuel from primer. Again manually it sprays fuel. I suspect that the primer is made wrong. On Amazon they range from 35-200 bucks. I bought the 70 something one. Really hate to spend $200 for one from evinrude. Any ideas?

 

[Faztbullet]

It is not a pump ..its a valve that opens with pushing in on keyswitch. The pressure in the fuel system and the cycles of the fuel pump is whats makes it "squirt"

 

[Bracketracing]

Yes I realize that. Pump the ball no spay turn red lever up fuel sprays from 2 small nozzles. As I understand it, all the red lever does is push open the solenoid so fuel can go to cylinders. It just won’t release fuel electrically.

 

[racerone]

It is not a pump.----Remove small hose.----Crank engine while pushing in the key.----Does fuel come out ?

 

[Bracketracing]

No and as I understand it cranking has nothing to do with it. When you pump the bulb it puts pressure on the fuel lines. Raising manual lever does the same as electric solenoid. Mine will only spray fuel manually not electrically.

 

[Crosbyman]

if it does not work electrically have you tested the ohms across the 2 wires controlling it. it is basically just and an electro magnet controlled valve so you better not see OPEN between the wires. see video

if the failure to let fuel go by while under pressure is not electrical (open coil) then something is wrong inside mechanically. .

if you remove the assembly will air pass "in to out" if you apply an external 12volts .

 

[dingbat]

Raising manual lever does the same as electric solenoid. Mine will only spray fuel manually not electrically.

Had to replace my solenoid last season.

Motor was hard to start off and on. Initial inspection and test of the solenoid turned up nothing.

Removed the solenoid for closer inspection and found signs (melted epoxy) of over heating. Bench testing showed solenoid was still fully operational.

Long story short, turns out the key switch was the problem. “Prime” contact would stick intermittently causing the solenoid over heat problem.

Replaced key switch and solenoid good luck. Motor now starts like new again.

 

[racerone]

The primer needs pressure in order to let fuel through !!!!-----That pressure would come from your assistant operating the primer bulb .-----Or from the starter cranking the motor and the fuel pump on the motor providing the pressure !-----So yes cranking has a lot to do with starting your motor.--Key must be pushed in while cranking it over !--And raising the lever has nothing to do with operating the primer either.-----Time to learn how the simple things work.----Read your manual or ask people who know how to start this motor.

 

[Bracketracing]

The primer needs pressure in order to let fuel through !!!!-----That pressure would come from your assistant operating the primer bulb .-----Or from the starter cranking the motor and the fuel pump on the motor providing the pressure !-----So yes cranking has a lot to do with starting your motor.----And raising the lever has nothing to do with operating the primer either.-----Time to learn how the simple things work.----Read your manual or ask people who know how to start this motor.

Ok manually raising the lever fuel comes out of solenoid. No cranking of engine bulb pumped up. Electrically no fuel but if I rotate lever I have fuel. I have 13.5 volts and 5 ohm resistance. Hooked a headlight to circuit to be sure it’s carrying the load. That eliminates switch and wires. I have read my manual and watched every video on this setup for evinrude engines. It acts like it’s not pulling solenoid down far enough

if it does not work electrically have you tested the ohms across the 2 wires controlling it. it is basically just and an electro magnet controlled valve so you better not see OPEN between the wires. see video

if the failure to let fuel go by while under pressure is not electrical (open coil) then something is wrong inside mechanically. .

if you remove the assembly will air pass "in to out" if you apply an external 12volts .

yes 5 ohms resistance and power will light a headlight

 

[racerone]

Turn key to " on / run " position.------Push key in.-----Do you hear a click ?----

 

[Crosbyman]

It acts like it’s not pulling solenoid down far enough


have you clean up the cavity , the mesh screen etc... apply a very light duty lubricant to the solenoid body and polish the plunger

electrically looks good ......now you need to fix the hardware

 

[Bracketracing]

Turn key to " on / run " position.------Push key in.-----Do you hear a click ?----

Yes it clicks. I even took top off and plunger pulls down. Fuel will not come out unless I turn lever to manual. I’ve hooked direct 12 volts to it same results.

 

[Bracketracing]

It acts like it’s not pulling solenoid down far enough


have you clean up the cavity , the mesh screen etc... apply a very light duty lubricant to the solenoid body and polish the plunger

electrically looks good ......now you need to fix the hardware

New solenoid twice

 

[Crosbyman]

the device is simple in design

plunger , tip , gasket and... holes...(fuel barbs)

have you at least tried to see if air can pass (see video)

 

[Bracketracing]

the device is simple in design

plunger , tip , gasket and... holes...(fuel barbs)

have you at least tried to see if air can pass (see video)

Not tried air. Manually it pushes the plunger down and fuel flows. You would think that says it’s open. I will try that tonight

 

[racerone]

Motor must be cranking for fuel primer to work with the key!!!-----When motor is running what happens when you push the key in ??

 

[Bracketracing]

Motor must be cranking for fuel primer to work with the key!!!-----When motor is running what happens when you push the key in ??

I’ll recheck it tonight but it will not start unless I use the manual lever.

 

[racerone]

Those primers were well built starting in 1980 and used to 2007.----Have been used with great success on motors from 10 to 300 HP.----Dealers don't even take them off when I buy a parts motors , since there is no call for them.----Call your local friendly dealer for a good used one.----Your location ?

 

[Crosbyman]

if the wires have the " ground" identifier loop replaced with a commn connector reverse the polarity just as a test ... plungers may push or pull depending on the magnetic field

if all else fails ...well as suggested try to get a good used one

 

[saltchuckmatt]

I think it's the amazon connection. Buy OEM parts.