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Next On The List Of Gt18 Frustrations

onan b48 b-48 carb sears gt18

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23 replies to this topic

#16 Texas Deere and Horse OFFLINE  

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Posted June 27, 2012 - 11:00 PM

I hope this pump fixes your issue. We me know how it works, I may be looking into one for our mower we use at the plant.

#17 Utah Smitty OFFLINE  

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Posted June 28, 2012 - 02:43 PM

I hope this pump fixes your issue. We me know how it works, I may be looking into one for our mower we use at the plant.


Will do. I want to put one on my GT 18 as well as my mother's.

U.S.

#18 superbsuburban OFFLINE  

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Posted June 30, 2012 - 02:11 AM

modern tractors have inline vacuum pumps,that simply tap into the breather and act like those stock briggs ones,except mounted in mid air,not very expensive

i worked at a speed shop for years,those auto pumps can be regged down to deliver ok,but they tend to die if necked down too far,the gph is way more than a 2cylinder needs,im thinking maybe a pump for a jet ski? if you must run an electric one
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#19 MH81 ONLINE  

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Posted June 30, 2012 - 09:18 AM

Superbsuburban, :welcome: to GTTalk.

Thanks for the information, when you get a chance, be sure to go to the member introduction area, let us know what you've got in the herd, and let us welcome you proper-like.

#20 Utah Smitty OFFLINE  

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Posted July 05, 2012 - 11:00 AM

Well, I put one of the low-pressure Mr. Gasket pumps on and it works fine. I just hooked it straight to the fuel inlet without removing the vacuum pump.

I think I also found why the vacuum pump was so intermittent...

When I turned the key on the first time, fuel sprayed out of the red, quarter-sized inline fuel filter that is between the pump and the carburetor. The seam on it was leaking, so the vacuum pump was drawing air, rather than fuel.

Anyway, that's two mysteries solved... now on to my GT 18 and getting a new top grill for it... but I'll put that in another post.

US
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#21 MH81 ONLINE  

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Posted July 05, 2012 - 11:05 AM

Glad the pump is working US, also good news you found that leak.

#22 olcowhand ONLINE  

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Posted July 05, 2012 - 11:06 AM

US... make sure you cut, then plug off the vac lines at the pump & at the block. If the diaphragm springs a leak, it would fill your block with fuel.
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#23 Utah Smitty OFFLINE  

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Posted July 05, 2012 - 11:26 PM

US... make sure you cut, then plug off the vac lines at the pump & at the block. If the diaphragm springs a leak, it would fill your block with fuel.


Will do. I didn't realize that...

US

#24 Utah Smitty OFFLINE  

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Posted July 08, 2012 - 07:45 AM

Well, mom reported yesterday that sometimes the tractor runs well, but other times it runs a minute or so then stalls, just like it did before. There's plenty of fuel in the tank, it has an inline electric pump, new plugs, fresh oil change... I'm baffled.

U.S.




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