Logo
FULL SITE MENU

1990 9.9 electric E10RELESC will not stay running

B

buldogbil

Member
I cleaned the carb. Fuel pump is good. Has spark. Fuel primer is working properly. No fuel leaks. I cleaned the carb and was able to get it to run, but it would not stay running. If I feed it gas with the fuel primer switch it does stay running. Is it safe to say the next step is to rebuild the carb. It looked good and clean when I took it apart to clean it.
Bill
 
Carburetors just need to be clean.------I rarely find carburetors that need to be " rebuilt "-------------If it will keep running with the primer activated it clearly points to blockage in the carburetor.--------Make sure all the wee passages are cleaned.
 
Yes, your explanation indicates a fouled carburetor. The high speed jet which is located at the bottom of the nozzle (sits in bottom of float chamber).... clean it with a piece of single strand steel wire as solvent just doesn't do a proper job of it.
 
Carburetors just need to be clean.------I rarely find carburetors that need to be " rebuilt "-------------If it will keep running with the primer activated it clearly points to blockage in the carburetor.--------Make sure all the wee passages are cleaned.------Pay particular attention to holes in item #2 and item # 4.-----------I always replace that wee rubber hose with factory one.
 
Carburetors just need to be clean.------I rarely find carburetors that need to be " rebuilt "-------------If it will keep running with the primer activated it clearly points to blockage in the carburetor.--------Make sure all the wee passages are cleaned.------Pay particular attention to holes in item #2 and item # 4.-----------I always replace that wee rubber hose with factory one.-------The high speed jet may not be part of the float bowl on your motor.
 
Wouldn't the fact that it revives by manually priming the fuel indicate a fuel pumping problem (unless the poster means choking it when he talks about fuel priming)?

If that is the case it could either be your fuel pump, fuel tank, fuel hose or an air leak somewhere along the line. You could try and run it with the fuel tank cap off to rule out tank venting. If you have another fuel hose, try that next to rule it out. Lastly, one can remove the fuel line to the carb and run the motor (or turn it over) and see if fuel pulses out the line. If it does, your fuel pumping is fine and if it doesn't and you have ruled out your hose and tank and do not see any air leaks, it must be a malfunctioning fuel pump.
 
From the first post it appears to be equipped with an electric primer.----It works when the fuel pump provides pressure !----------------So I conclude that there is in issue in the carburetor.
 
To advoid any misinterpretation, The high speed jet is not part of the float chamber.... it is attached to the upper body but sits at the bottom of the long nozzle portion of the upper body that sits close to the bottom of the float chamber.

In agreement with Racerone.... the fuel pump appears to be fine as it is supplying fuel to the primer solenoid, otherwise the primer solenoid would have no effect on rpms when engaged.
 
Hi guys and thank you for your response,
I was able to get the motor run smoothly. I had to back the needle valve out much more than 1 1/2 turns but it sounds great. I noticed gas slowly leaking out the throat of the carb with the motor off and the primer bulb pumped up good. It was slow enough that you could not see movement but I am sure it was coming out. I have the air house off. It was splilling out and seeping out on the lower unit. Would that be the float needle not sealing?
Thank you
Bill
 
Last edited:
(Carburetor Float Setting)
(J. Reeves)

With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the float (the end opposite the hinge pin) is ever so slightly higher (just ever so slightly off level) than the other end. And when viewed from the end, make sure it is not cocked.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction a:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
 
Hi Joe and Kimcrwbr1,
I did the float adjustment and I still have the problem. Is it easier to remove the powerhead to replace the hoses and service the fuel pump?
Thank you
Bill
 
It's unlikely that the fuel pump has a problem.

If the fuel pump was faulty, there would be no fuel pressure being delivered to the fuel primer solenoid, and pressing the key in to engage the fuel primer solenoid would do absolutely nothing as there couldn't be any fuel at that point.

A quick test of the pump would be to remove the outlet fuel line from the fuel pump or at the carburetor (whichever is easier to get at), then crank the engine over. If fuel is pumped out of the fuel pump, then obviously it is functioning.

Removing the powerhead would be a last resort thing.
 
Hi Joe,
Thank for your response. I disconnected the hose at the carb and gas came out as soon as I hooked up the tank hose. I then disconnected the fuel line from the pump to the crankcase. I hooked the tank hose back on and pumped it up good and NO fuel came out of that hose.
Thank you
Bill
 
Back
Top