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 Motor running off one cylinder 
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MMT Member

Joined: Wed Feb 14, 2018 4:45 pm
Posts: 3
Post Motor running off one cylinder
I have a 23hp Briggs and it’s only running off one cylinder. I took the spark plug out, it is getting fuel and a spark, but motor still bogs down under load. Just wondering if maybe it’s the coils or something. Replaced the plug the same day and ran the motor for about 15 minutes, and it already seemed to have fouled the plug. Anything helps!!!


Sat Feb 17, 2018 8:29 pm
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Joined: Mon Dec 31, 2012 11:07 pm
Posts: 4820
Location: West Monroe, LA
Post Re: Motor running off one cylinder
Valve lash?

#CFFITR
#TheGhostBoat
#whoneedsphysicsihaveamudmotor


Sat Feb 17, 2018 8:37 pm
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Joined: Sun Jun 22, 2014 3:26 pm
Posts: 24
Post Re: Motor running off one cylinder
Check ur intake gaskets. One of my intake gaskets blowed out and it killed the cylinder.

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18x52 Weldbult with 35hp Dixie


Mon Feb 19, 2018 11:16 am
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Joined: Wed Jan 14, 2009 7:23 am
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Location: Tarkington, TX
Post Re: Motor running off one cylinder
Remove the kill wires from the coils (motor will have to be choked to turn it off), If it runs fine with the coils unplugged you have a bad diode. More than likely killing one cylinder.

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Tue Feb 20, 2018 11:04 am
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