All-Terrain Lawn Tractor Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

All-Terrain Lawn Tractor Forum

Like riding lawn tractors through mud, woods, rocks, and snow? Then this is the place for you! Share your ideas, Post your projects and more!
 
PortalHomeSearchRegisterLog inTop Tractor Challenge
Welcome to the All Terrain Lawn Tractor Forum! . . .
. . . . . . . . . . . . . . Happy Holidays!

 

 16.5 ohv lean when low idle, floods when high throttle

Go down 
AuthorMessage
Guest
Guest




16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitimeWed Apr 10, 2013 7:02 pm

I have a couple of these OHV briggs motors about to be re-rebuilt and one race-modded. I do not wish to use the original carb if possible, as I find the fuel solenoid to be a horrid pain in my cheeks. On stock builds I generally just take the solenoid out, clip the plunger or file it down, and install a fuel shutoff valve. I am curious though, as my last time doing this created a really odd problem, one I'm not sure about. At low idle (using a gas pedal rig-up) it runs lean, almost too lean like it gets no fuel... but when throttle is pinned up to 3600 +/- rpm, it floods out... sometimes backfiring.

Is it possibly the carb being gunked up or do you all think it may be needing another valve adjustment? I usually check valve lash at every other oil change... but haven't in a while...
Back to top Go down
Doug
Administrator
Administrator
Doug


Age : 26
Join date : 2012-12-24
Posts : 2954
Forum Rep : 71
Location : Lebanon County, PA

16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: Re: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitimeWed Apr 10, 2013 7:37 pm

You can easily bypass the fuel solenoid with a 12v source and a switch. Thats what I did with the Rally.

_______________________________________________
Head Forum Administrator ** Chat Moderator ** Facebook Page Admin
ATLTF Facebook Page ** Chatbox ** How To Upload Pictures

_X_ FORUM ANNOUNCEMENTS _X_


Have a question? Ask me! Type in "@Doug" in your post!

Your ATLTF Staff:
Administrators: @Doug, @MightyRaze, @"Doc Sprocket", @Stretch44875
Moderators: @TheRainbowBoxer, @AllisKidD21




Back to top Go down
Guest
Guest




16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: Re: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitimeWed Apr 10, 2013 9:46 pm

oh, I already do that on the carbs that still have one. I guess I should word my question differently - on the last one I modded I seem to be starving it for fuel at low idle and flooding it at high idle... what might be causing it?
Back to top Go down
Doug
Administrator
Administrator
Doug


Age : 26
Join date : 2012-12-24
Posts : 2954
Forum Rep : 71
Location : Lebanon County, PA

16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: Re: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitimeWed Apr 10, 2013 9:57 pm

Probably just needs a good carb cleaning and some idle adjustments.

_______________________________________________
Head Forum Administrator ** Chat Moderator ** Facebook Page Admin
ATLTF Facebook Page ** Chatbox ** How To Upload Pictures

_X_ FORUM ANNOUNCEMENTS _X_


Have a question? Ask me! Type in "@Doug" in your post!

Your ATLTF Staff:
Administrators: @Doug, @MightyRaze, @"Doc Sprocket", @Stretch44875
Moderators: @TheRainbowBoxer, @AllisKidD21




Back to top Go down
Guest
Guest




16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: Re: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitimeWed Apr 10, 2013 10:28 pm

probably - I will get to that as soon as I can and see if it helps. If not, I'll go to a non-stock walbro carb on a cast intake with some beercan and copper spray gaskets lol
Back to top Go down
Sponsored content





16.5 ohv lean when low idle, floods when high throttle Empty
PostSubject: Re: 16.5 ohv lean when low idle, floods when high throttle   16.5 ohv lean when low idle, floods when high throttle Icon_minitime

Back to top Go down
 
16.5 ohv lean when low idle, floods when high throttle
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
All-Terrain Lawn Tractor Forum :: Technical Forum :: Engine Tech :: Briggs and Stratton-
Jump to: