Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Articles] - [Photo Gallery] - [Groups] - [Chat] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] - [Tools]

Go Back   SmokStak > SmokStak® Antique Engine Community > Small Air Cooled Gasoline Engines
Forgot Password? Join Us!

Notices

Small Air Cooled Gasoline Engines Briggs & Stratton, Clinton, Lauson, Maytag, Nelson, Wisconsin and other small air cooled engines.

Small Air Cooled Gasoline Engines

Briggs Vanguard Problem


this thread has 8 replies and has been viewed 5047 times

Reply
 
Thread Tools Display Modes
  #1  
Old 05-20-2009, 05:04 PM
Baldrick Baldrick is offline
Registered
 
Join Date: Apr 2009
Location: Collegeville, Pa.
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Default Briggs Vanguard Problem

Hi all.

I've got a 16hp Vanguard on my Cub Cadet tractor and am having some problems.

Last week when mowing, I noticed that when going from forward to reverse (or rev. to forward) and putting a little extra load on the engine, it would lose power for a second or two. Today, I started it up and whenever I gave it more that half throttle, it would cough and start to die.

I took the top of the carb off and hit it with carb cleaner. I thought that the float plug might be leaking through and flooding it. My local shop had none it stock so I came home and put it back together. It runs better now and I was able to mow a bit. It almost stalls when I engage the PTO, but then gets up to speed. While mowing the engine surges a bit and backfires once every minute or so.

Do you thing I just need a good cleaning? I was thinking of removing the carb and soaking it, but I think I have to remove the intake manifold to do it and there's a bunch of stuff (shrouds and linkages) I have to remove in order to do that.

Also, where's the main jet on this thing? It's a Nikki carb and the only numbers I see are 6100 & 22-131 & 808070. There's and plastic limiter on the idle mixture screw that I can't get off and the solenoid. Other than that, I can't see where the jet would be.

Any help or thoughts would be great!

Thanks.
Reply With Quote
Sponsored Links
  #2  
Old 05-20-2009, 07:15 PM
Bill Sherlock Bill Sherlock is offline
Subscriber
 
Join Date: Nov 2004
Location: Maymont, Saskatchewan, Canada
Posts: 2,298
Thanks: 297
Thanked 948 Times in 523 Posts
Default Re: Briggs Vanguard Problem

Sounds like could be an ethanol gas problem to me. Might want to try gas from another source to see if that helps any.

Bill
Reply With Quote
  #3  
Old 05-20-2009, 08:59 PM
ehpower2 ehpower2 is offline
Registered-III
 
Join Date: Mar 2008
Location: twin cities, minnesota
Posts: 1,444
Thanks: 64
Thanked 385 Times in 291 Posts
Default Re: Briggs Vanguard Problem

clean carb new gas and probilly check your valves and your spark plug make sure those are good.
Reply With Quote
  #4  
Old 05-20-2009, 09:33 PM
Jim Tremble Jim Tremble is offline
Subscriber
 
Join Date: Nov 2004
Location: Washington
Posts: 1,766
Thanks: 2,204
Thanked 584 Times in 305 Posts
Default Re: Briggs Vanguard Problem

Baldrick

Have you checked the governor for proper operation ?? Hunting, dieing, temp lose of power seems like it may be a gov. problem.

Just a thought,

Jim
Reply With Quote
  #5  
Old 05-20-2009, 10:23 PM
Baldrick Baldrick is offline
Registered
 
Join Date: Apr 2009
Location: Collegeville, Pa.
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: Briggs Vanguard Problem

Thanks folks.

I guess I'll pull the carb tomorrow.

I've got the Briggs interactive manual and looking at the diagram and instructions for the Nikki carb, it doesn't really show where the main jet is. It shows the plug, washer and fixed main jet, but not where they go.

It looks it may go where the solenoid is if it wasn't so equipped. Would this be right? If so, does that mean I don't have a main jet?

Thanks.
Reply With Quote
  #6  
Old 05-20-2009, 10:34 PM
CubCadet107 CubCadet107 is offline
Registered-II
 
Join Date: Jan 2009
Location: Good ol' rainy Finleyville PA
Posts: 112
Thanks: 176
Thanked 35 Times in 23 Posts
Default Re: Briggs Vanguard Problem

Quote:
Originally Posted by Jim Tremble View Post
Baldrick

Have you checked the governor for proper operation ?? Hunting, dieing, temp lose of power seems like it may be a gov. problem.

Just a thought,

Jim
I second Jim's post, my older craftsman used to do this and I found out that there was a lot of play in the governor linkage.
-Jordan
Reply With Quote
  #7  
Old 05-21-2009, 08:17 AM
Sky
Guest
 
Posts: n/a
Default Re: Briggs Vanguard Problem

All of your carbs have a main jet. wether or not they have a solinoid, differs. You could have irratic linkage troubles but it's likely you need a carburator rebuild which consists of buying a rebuild kit at a dealer, cleaning the carb out with a recomended B-12 Chemtool or gumout and well, rebuilding the carb. It's a very firmiliar problem. 94 percent of my work is carburator rebuilds based on a 16 year period. It's a seasonal thing.
Reply With Quote
  #8  
Old 05-21-2009, 08:28 AM
Baldrick Baldrick is offline
Registered
 
Join Date: Apr 2009
Location: Collegeville, Pa.
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: Briggs Vanguard Problem

So if it is the governor, are you saying it's the external linkages or that I've got to open up the engine?

I think I'll first try the carb since it is running a bit better after the first cleaning. I'll just have to keep my fingers crossed that I can find the gaskets locally.

Plus, I've never dealt with governors and have no idea where to start.

I'll let you know what happens.
Reply With Quote
  #9  
Old 05-21-2009, 10:16 AM
Jim Tremble Jim Tremble is offline
Subscriber
 
Join Date: Nov 2004
Location: Washington
Posts: 1,766
Thanks: 2,204
Thanked 584 Times in 305 Posts
Default Re: Briggs Vanguard Problem

Rick

I agree, completely clean the carb and fuel system first.

If that does not cure the problem, look into the gov. linkage or internal problems.

Does that engine have a fly weight or air vane gov ??

Jim
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Briggs B carbon problem ehpower2 Small Air Cooled Gasoline Engines 2 11-26-2008 11:19 PM
Odd Briggs FH Problem Sky Small Air Cooled Gasoline Engines 10 11-08-2008 01:33 PM
FE briggs carb problem Mike Harper Small Air Cooled Gasoline Engines 3 02-24-2007 06:11 PM
throttle problem 8hp Briggs Hal Davis Antique Engine Archives 6 04-07-2003 08:03 AM
Briggs & Stratton Problem John Edwards Generators & Motors General Discussion 3 03-15-2003 08:31 PM


All times are GMT -4. The time now is 06:09 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark
A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2014 by Harry Matthews
P.O. Box 5612 - Sarasota, FL 34277