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Brettw

Vanguard carburator

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Brettw

Recently, I picked up a 7116 with a 16 horsepower Vanguard  V twin.  Starts well, no smoke, drove it around a bit but it didn't seem quite right in regard to the carb.  It wants to die off and requires choking to keep it running.   I noticed that there is what appears to be a vacuume tube coming out of the top of the flywheel side of the carburator, that goes no where and has nothing hooked up to it.  In parts diagrams, it shows the tube but nowhere can I see what might hook up to it, if anything.  Also, this carburator has a solenoid and if I understand this correctly, the engine has an electronic governor.  Any ideas as to why it is dieing the way it is with the need to choke on and off to keep it running?  It may have sat for a bit, so I can certainly pull and clean the carb, but perhaps a few Vanguard gurus can chime in.  Thanks in advance for any help.

Edited by Brettw

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MARK (LI)

Sounds like it is not getting quite enough fuel    call this guy

JMT ENT.    PO Box 183   
    Barton, MD 21521-0183        

 443-542-1526    jmtwiggent@hotmail.com

His name is Mike and he is a great guy...he will answer questions and explain stuff, even if you don't buy anything from him...he will know exactly the answers to your questions
He retired from B & S and does a lot of repairs...he has a ton of NOS and if you need something his prices are ridiculously cheap...I had a Vanguard 14...carb problem...that carb is over $225...rebuild kit is over $125....he had me send it to him...60 bucks for parts and labor to rebuild it...I had to pay priority mail was about 7 dollars each way...hope he can help you....good luck

Edited by MARK (LI)
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hurleyii

I had the same issue on my 21hp Vangaurd when I had to install a new cylinder head. I came across that vacuum hose and asked the guys but nobody had an answer for me last I checked. I originally thought it should be plugged so on reassembly I plugged it. Keep in mind the tractor ran great when I pulled the engine apart just no power if you flipped the PTO.  It would die or almost.  (This was a Cub Cadet) 

After plugging the hose the tractor did the exact same thing that your dealing with now. So I pulled that hose and installed the original hose. After that it ran like new again. I assume it's some kind of vent for the carb. I would assume vased on my experience that the vent hose is clogged someplace along the way.

If you contact the gentleman above please let me know what you learn. 

 

Edited by hurleyii
21hp not 23

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Brettw

I will check.  I did run just fine for a bit, so I am wondering if there was something in the fuel or the bowl that got sucked up.  There is no vacuume hose, just the fitting, that was what I was wondering.  Also, if the electric governor or solenoid could be causing the issue.  I am going to give everything a good cleaning and make sure there isn't water in the fuel or some such thing.  If I can't figure it out on my own, then I will call the guru's.  I'm kinda stubborn that way............

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hurleyii

Now that you say that I think that' the way mine was to. No vacuum line.  I put one on filled with rtv, ended up taking it back off. Mine also initially ran fine then suddenly had to be choked to run.

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Kenh

If you put your finger over the hose is there vacuum?  If there is, then plug it.  Otherwise it is probably a bowl vent for the carb.

 

Ken

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