BS Vangaurd no fuel to carb

JerryCPP(WA) · Feb 11, 2021

I finally finished installing a new 16HP Vanguard on my Massey Ferguson MF1650. I have fuel to the pump, but the engine won't start. A little gas in the carb and it fires right off. The fuel pump was already mounted and plumbed, and is plumbed correctly. How long should this thing take to prime the system? Any ideas most welcome.

wore out · Feb 12, 2021

Obviously, you must have verified that the "pulse line" is properly connected to both the pump and the crankcase?

Also, seems to me with some engines with crankcase pulse operated pumps if the crankcase breather isn't properly assembled or is otherwise not how it needs to be that can affect the crankcase pressure pulses that operate the fuel pump.

It's possible the little rubber fabric "flapper valves" in the pump could either be stuck to their seats between when the engine was built and when you are trying to start it, or there could even be a chunk of debris that found it's way yo one of the flapper valves.

As an alternative, you can buy little low pressure electric fuel pumps for garden tractors on ebay for around $15 shipped, I have used several and so far so good.

Nice thing is you can turn the key on and wait a few seconds before cranking and get an instant start vs. having to crank 'til the pulse pump brings up fuel to the carb.

MNGB · Feb 12, 2021

(quoted from post at 20:04:04 02/11/21) I finally finished installing a new 16HP Vanguard on my Massey Ferguson MF1650. I have fuel to the pump, but the engine won't start. A little gas in the carb and it fires right off. The fuel pump was already mounted and plumbed, and is plumbed correctly. How long should this thing take to prime the system? Any ideas most welcome.

Did the fuel solenoid valve get wired up if its not activating the carb will not get fuel, if its working it does take a bit to get the car bowl filled I have a squeeze bottle I squirt gas into the carb until it will stay running

T.R.K. · Feb 12, 2021

MNGB is right. If you have fuel to the pump and it doesn't fill the carburetor and start in about a minute and a half, its probably the fuel solenoid. Or the needle valve in the carburetor is stuck.

JerryCPP(WA) · Feb 12, 2021

Thank you for your reply. The squeeze bottle is next on my list. This is a 1976 tractor, built before fuel solenoids were used.

DelMN · Feb 12, 2021

Install a marine bulb type hand squeeze pump between the tank and fuel pump. This will push the gas thru the pump to the carb. If it dies out after a short time, then the pump isn't working. The bulb is good to have anyway.

MNGB · Feb 12, 2021

(quoted from post at 12:58:44 02/12/21) Thank you for your reply. The squeeze bottle is next on my list. This is a 1976 tractor, built before fuel solenoids were used.

You post that you installed a new B&S engine so is it new or new to the tractor? If its a new engine then the carb will have a solenoid I believe

MNGB · Feb 12, 2021

Just a bit of an update I installed a 1986 B&S Vanguard engine in one of my Sears Suburbans and it has a fuel shutoff solenoid on it, the fuel solenoid is on the lower RH side of the carb (looking at the flywheel) every B&S carb for those engines have the solenoid unless its a cheap aftermarket carb

JerryCPP(WA) · Feb 12, 2021

You are absolutely right. I am being dragged, kicking and screaming, into the 20th and 21st century with these new-fangled mechanical devices. I tracked the fuel as far as the carburetor, and was about to take it off and apart to see if the needle was stuck. And there, right where you said, hidden down under a bunch of shiny metal, is a fuel shutoff solenoid. I wondered what that loose wire was hanging out there; now I know. Many thanks to all who replied. The old tractor had no fuel shutoff, so I never considered this brand new engine would be EPA compliant. So, back to rewiring the system. Livin' and learnin' and forgettin' and relearning - the life of a man embracing advancing maturity.

Texasmark1 · Feb 23, 2021

Now that is a superb idea.....I have been boating for over 65 years and never would have thought about applying a boating technique to another type of engine. But for an engine that sits for a long time or one that has the tank much lower than the fuel pump, a superb idea . Wally world carries them in the sporting goods dept..

BS Vangaurd no fuel to carb

JerryCPP(WA)

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wore out

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MNGB

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T.R.K.

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JerryCPP(WA)

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DelMN

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MNGB

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MNGB

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JerryCPP(WA)

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Texasmark1

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