Garden Tractors - 27 HP B&S wont start

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27 HP B&S wont start - runs when eithered

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=127487
Printed Date: 19 Nov 2024 at 9:36pm
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Topic: 27 HP B&S wont start - runs when eithered

Posted By: Coke-in-MN
Subject: 27 HP B&S wont start - runs when eithered
Date Posted: 19 Aug 2016 at 10:19am

Dang B&S on Swisher would not start the other day , turn over fine but no start , replaced fuel filter , checked fuel pump (good flow), replaced air cleaner ,

If i give it a shot of either when turning over - starts and runs fine - no power loss , no surging , just runs like normal .

Shut if off with key - will not restart - just turns over - seems choke linkage all moves and works (choke was not needed most times to start)

Seems this is something new as in 4 years no problems and now -

has some type of electronic box on engine that says easy start fuel control - that has several wires leading to carb (what looks like carb) and fuel shut off solonoid .

The fact it runs fine when it does start and responds to throttle - idles and goes to full power - that is what puzzles me .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Replies:

Posted By: Ferdinand
Date Posted: 19 Aug 2016 at 11:33am

has some type of electronic box on engine that says easy start fuel control - that has several wires leading to carb (what looks like carb) and fuel shut off solonoid .

Don't know much about it but, that sure sounds suspicious. Do you have any manuals?
B&S has some maintenance manuals online. I would try to bypass any start feature just for troubleshooting purposes.

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Because narrow is the gate, and narrow is the way, which leads unto life, and few there be that find it.
Mathew 7:14

Posted By: Coke-in-MN
Date Posted: 19 Aug 2016 at 2:21pm

Found this article on the EMF relay they call it - sounds like part of my problem except this guy burned up module so the fuel solonoid did not work . that part seems to still work but somehow the choke is said to be problem . ??? more research or buy a module ?

http://www.mytractorforum.com/231-articles-engine-other/243879-bypass-failed-electronic-fuel-management-module.html" rel="nofollow - http://www.mytractorforum.com/231-articles-engine-other/243879-bypass-failed-electronic-fuel-management-module.html

Here is the B&S page on module

http://vrr.dyndns.biz/Docs/BS/ElectronicFuelManagementAPSI60_A_HI%5B1%5D.pdf" rel="nofollow - http://vrr.dyndns.biz/Docs/BS/ElectronicFuelManagementAPSI60_A_HI%5B1%5D.pdf

Posted By: Coke-in-MN
Date Posted: 19 Aug 2016 at 5:02pm

Well after scratching head , using some 4 letter functional words , crawling around and sticking fingers into places not meant to be touched .

I removed 2 -9/32 screws holding the stepper motor for choke rod (yes electronic choke) everything seemed fine - motor worked moving into 3 different positions as key was activated - and then noticed a slight bend in bracket - bent it straight or close and installed - engine started - checked closer and bent about another 1/8" away from engine - moves free and engine starts .

Posted By: jaybmiller
Date Posted: 24 Aug 2016 at 6:56pm

glad it's 'up and running'. Man I can't believe the BS some 'engineer' came up with to replace a knob on a wire in a metal straw to control the choke. Probably $500 in 'bits and pieces' vs $20 'choke cable'.
Then again WHO knows HOW to operate a choke these days ? Any cars have them...hahaha
Technology....

sigh

Jay

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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water

Posted By: HudCo
Date Posted: 24 Aug 2016 at 10:59pm

completly EPA driven, they think that the consumer isnt capable of turning off the choke in time not to have exsessive emissions also the engine manufacturers have to show they are improving emissions somehow

Posted By: Steve in NJ
Date Posted: 25 Aug 2016 at 6:42am

Spare me..... LOL!

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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Posted By: jaybmiller
Date Posted: 31 Aug 2016 at 6:13am

re:
completly EPA driven

The same EPA that allows King O to have a 747 go to a golf game? We could all run all of our engines 24/7 all year long with what a 747 pollutes in an hour ! The same EPA that allows a 'custom car' in LA to bypass the CA pollution laws ? !!

what I like are the 'utube' fixes being posted......'some kind of knobby thing on a wire string that you push and pull'.......

Jay

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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water