18hp Briggs Bogging

Xtreme Cartz · 05-04-2011, 07:01 PM

Getting some of these bugs worked out on the new toy.

The next problem is the engine boggs down and spits gas out of the carb when the throttle is floored. The valves were way out of adjustment which caused the starter to have a hard time turning the engine over and a ticking noise. Engine lacks power. Adjusted the valves it sounds like a new engine, but is slow to rev up/bogs down. Is this a carb issue or something else?
Thanks

Flintrock · 05-04-2011, 08:08 PM

I'd check everything in the fuel delivery first.... hoses, filter, make sure it has fresh gas and fuel pump output. Make sure it has fire at both cylinders, it will run on one. You can check the troubleshooting section for the "compression test" procedure too. Then I would think it's carb rebuild time.

Xtreme Cartz · 05-04-2011, 09:01 PM

Fresh tank of gas. Fuel pump works great and its getting gas to the carb. It wouldnt run at all before. I blew compressed air through the gas inlet port at the carb and gook came out the other side. Why does this carb have two fuel line "ports"? There is nothing on the other one. Both cylinders are getting spark. I will do a compression test and post the #'s.

Xtreme Cartz · 05-04-2011, 09:33 PM

I must have missed the compression test procedure. Cant seem to find it on here. The briggs engines have a compression release dont they? How is the test done?

Xtreme Cartz · 05-04-2011, 09:51 PM

Eh. If I did it right I got 130 and 90.

Flintrock · 05-05-2011, 01:38 AM

Take the both plugs out and spin it WOT till the reading won't go any higher. The other fuel port is an overflow. I'd run a hose down towards the ground from it.

Xtreme Cartz · 05-05-2011, 11:58 AM

Thanks Flint! 160 and 160 that looks better!

Now what would you try?

sho305 · 05-05-2011, 02:33 PM

If gunk came out of the carb that would be the first thing I cleaned, if you didn't.

Xtreme Cartz · 05-06-2011, 01:27 AM

Any tips on how to clean it? The engine starts easily(dont even have to use the choke), idles and sounds great. Just has zero power. Feels more like a 36 volt cart with old batteries than a BB.

essness · 05-06-2011, 05:22 AM

Matt, sounds like the same issue I had with mine. I had a home made filter on the intake, it was not letting me get enough air into the carb. What are you using for the air filter?

05-04-2011, 07:01 PM	#1
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	18hp Briggs Bogging Getting some of these bugs worked out on the new toy. The next problem is the engine boggs down and spits gas out of the carb when the throttle is floored. The valves were way out of adjustment which caused the starter to have a hard time turning the engine over and a ticking noise. Engine lacks power. Adjusted the valves it sounds like a new engine, but is slow to rev up/bogs down. Is this a carb issue or something else? Thanks

05-04-2011, 08:08 PM	#2
Flintrock Raised by coyotes Join Date: Nov 2008 Location: Central Texas Posts: 5,658	Re: 18hp Briggs Bogging I'd check everything in the fuel delivery first.... hoses, filter, make sure it has fresh gas and fuel pump output. Make sure it has fire at both cylinders, it will run on one. You can check the troubleshooting section for the "compression test" procedure too. Then I would think it's carb rebuild time.

05-04-2011, 09:01 PM	#3
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	Re: 18hp Briggs Bogging Fresh tank of gas. Fuel pump works great and its getting gas to the carb. It wouldnt run at all before. I blew compressed air through the gas inlet port at the carb and gook came out the other side. Why does this carb have two fuel line "ports"? There is nothing on the other one. Both cylinders are getting spark. I will do a compression test and post the #'s.

05-04-2011, 09:33 PM	#4
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	Re: 18hp Briggs Bogging I must have missed the compression test procedure. Cant seem to find it on here. The briggs engines have a compression release dont they? How is the test done?

05-04-2011, 09:51 PM	#5
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	Re: 18hp Briggs Bogging Eh. If I did it right I got 130 and 90.

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

05-05-2011, 01:38 AM	#6
Flintrock Raised by coyotes Join Date: Nov 2008 Location: Central Texas Posts: 5,658	Re: 18hp Briggs Bogging Take the both plugs out and spin it WOT till the reading won't go any higher. The other fuel port is an overflow. I'd run a hose down towards the ground from it.

05-05-2011, 11:58 AM	#7
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	Re: 18hp Briggs Bogging Thanks Flint! 160 and 160 that looks better! Now what would you try?

05-05-2011, 02:33 PM	#8
sho305 Vegas modded 420 Join Date: Jun 2009 Location: West MI Posts: 15,443	Re: 18hp Briggs Bogging If gunk came out of the carb that would be the first thing I cleaned, if you didn't.

05-06-2011, 01:27 AM	#9
Xtreme Cartz The Fabricator Join Date: Dec 2006 Posts: 2,016	Re: 18hp Briggs Bogging Any tips on how to clean it? The engine starts easily(dont even have to use the choke), idles and sounds great. Just has zero power. Feels more like a 36 volt cart with old batteries than a BB.

05-06-2011, 05:22 AM	#10
essness Not your usual outlaw Join Date: Oct 2008 Location: Near Lake Geneva, WI Posts: 20,054	Re: 18hp Briggs Bogging Matt, sounds like the same issue I had with mine. I had a home made filter on the intake, it was not letting me get enough air into the carb. What are you using for the air filter?

Similar Threads
Thread	Forum
Mangled Stator 18hp Briggs	Big Block Talk!
what clutch for 18hp briggs	Big Block Talk!
Briggs 18HP twin rebuild?	Big Block Talk!
briggs 18hp wiring	Big Block Talk!
18hp Briggs for sale	Big Block Talk!