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B&S 23hp v-twin. When I start it up one of the valve covers fills with gas. So much so that it blows a vacuum hose coming out of valve cover off and spews fuel everywhere. Fuel is also getting in crankcase and contaminating oil. I’ve had carb off and everything appears fine. I replaced head gasket on that side. No change. Any ideas?

you need to check the carb needle and seat

and you need to change your oil and filter because your oil is contaminated too

careful until it is fixed that shit can catch fire

Honda has made some bad engines.  I recall Consumer Reports making a "Don't Buy" recommendation on a piece of lawn equipment because it had a shitty honda engine that was prone to failure.

1 hour ago, Gil Bang said:

Honda has made some bad engines.  I recall Consumer Reports making a "Don't Buy" recommendation on a piece of lawn equipment because it had a shitty honda engine that was prone to failure.

Duly noted 

All these guys are wrong...

The problem is your engine isnt big enough for the amount of fuel you are pushing through it.  

If it doesn't already have one, install a fuel cut off valve. Shut it when you are done and let the carb empty out. Leave it shut until you are ready to start it back up. This will prevent you float from getting stuck and flooding your engine while it is off. It will also help keep the carb running smoothly. If there is a station near you that sells ethanol free fuel, use it to fill up your gas cans.

Cam lobe is fucked. Not letting intake valve close. Shooting shit into valve cover through a bad valve seat and bent stem.

I’m talking out of my ass. Just the funnest way to tag for resolution.

On 7/8/2019 at 10:55 PM, immortal13 said:

Honda>B&S

Honda makes some good engines, but their carbs are generally more prone to gumming up with bad fuel in my experience.

On 7/9/2019 at 8:12 AM, NotActuallyALonghorn said:

If it doesn't already have one, install a fuel cut off valve. Shut it when you are done and let the carb empty out. Leave it shut until you are ready to start it back up. This will prevent you float from getting stuck and flooding your engine while it is off. It will also help keep the carb running smoothly. If there is a station near you that sells ethanol free fuel, use it to fill up your gas cans.

This is the best thing to do.

Sounds like a bad fetzer valve

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Does it have one of those vacuum operated fuel pumps?

 

Just spitballing but maybe a failure of that pump and the various interconnected crankcase ventilation circuits, and, well,  keeping wildlife, um... an amphibious rodent, for... um, ya know domestic... within the city... that ain't legal either

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