Surging, no acceleration Briggs Fun Power 5HP

[daveofds]

Partial rebuild in progress. Replaced belt drive, primary sprocket, throttle cable, made adjustments for steering and too light front end. (Toe out front wheels, added weight to front of cart and lowered tire pressure.

Got the kart running yesterday. Started OK, died several times. Seems to run better with choke on lightest setting. Rode for 20 minutes.

Today…verry difficult to start. Shot a lot of carb cleaner in the intake to get it started. Idles rough now, surges, will not accelarate. Dies easily, fethering choke to keep running at idle. Applying throttle seems to have no effect. I did make sure the governor screw was locked all the way clockwise before riding it yesterday. With throttle wide open, just surges and low rpm. I have a video with sound but unable to attach due to restrictions.

 

[Denny]

Clean the carburetor. Sounds plugged up.

 

[Whitetrashrocker]

Or an intake leak.
Its getting too much air and not enough fuel to idle. Thats why it likes the choke on.

 

[Grizzlymi]

Yeah, clean the carb and check for air leak around the intake. Make sure gaskets are good.

 

[daveofds]

A new carb cost less than $25. But I can buy a whole new engine for less than $140.

https://www.amazon.com/gp/product/B098JLDZ3D/ref=ewc_pr_img_1?smid=A3FP93UKJYWCVU&th=1

Anyone ever put one of these on their kart? Reviews I've read say it is one step below a Predator in torque, smaller gas tank, and no idle adj on carb. Carb can be replaced.
A new predator is <$159 at Harbor Freight. I see a lot of these engines on Karts online.

6.5 HP (212cc) OHV Horizontal Shaft Gas Engine, EPA

Amazing deals on this 6.5Hp (212Cc) Horiz Shaft Gas Engine at Harbor Freight. Quality tools & low prices.

www.harborfreight.com

212 and 224 cc. 224 is $179.

 

[Whitetrashrocker]

And cleaning the carb costs pennies. A new gasket kit is a few dollars.

 

[Thepartsguy]

Predator 212cc is better more powerful and more reliable in every way.

Will actually start every time you want it to and can be hopped up for cheap and won’t kill reliability.

Briggs are crap but that won’t stop me from running them. 99% of people do not want to deal with a Briggs cause of how finicky they are just to start.

 

[Hellion]

Any China OHV engine should be good to go. There's several brands, Predator, Ironton (Northern Tool), PowerFist in Canada and various other brands you never heard of. Best deal is a Predator 212 IF it is on sale for $99.99 and there are more parts out there for it, actually designed for it, than any other engine brand. We're in the end of the year sales, I bet it will go on sale soon.

99% of people do not want to deal with a Briggs cause of how finicky they are just to start.

I have never really had a problem with them assuming it's a Pulsa-Jet carburetor. If the tank mounted bowl is empty (sitting several days), it takes a few pulls to fill it before it draw from the bowl and start. If the engine is cold and the bowl is full, it starts like a Predator, 1 or 2 pulls. Well it's usually 2; 1st pull on full choke and it coughs, 2nd pull choke off and it chugs to life.

Do what others said. Check the carb and the gaskets, the tank mounted carburetor is pretty unique since it is always pumping fuel and will work at angles that would stop a regular float carburetor. This site is indispensable:

Disassembly, Cleaning and Repair of Briggs Tank-mounted Pulsa-jet Fixed-jet Small Well Carburetor

outdoorpowerinfo.com

Otherwise they just seem to work if everything is serviceable. Granted, we are usually working with old engines suffering from years of neglect and most folks only want to give it the minimum effort before giving up and admitting defeat. If you check older posts it will amaze you that the denizens here recommended actually fixing things instead of buying a whole new engine...

I'd say 99% of people do not want to deal with anything.

[EDIT]: Check YouTube University on the surging problem.

 

[Denny]

I never heard of B&G engines before.

 

[ezcome-ezgo]

Blotson & Goforth. Made Briggs clone in the early 70's out of recycled aluminum pull tops and old hippie jewelry.

 

[daveofds]

I can find a replacement carb but no kits. The carb is $20.00. Waiting for it to arrive. Has new gaskets with it.
If I am still having trouble I am buying the Predator engine with the longer stroke.

 

[Denny]

Blotson & Goforth. Made Briggs clone in the early 70's out of recycled aluminum pull tops and old hippie jewelry.

I never had or wear jewelry.

 

[daveofds]

And cleaning the carb costs pennies. A new gasket kit is a few dollars.

Could not find a kit with new gaskets. The replacement carb comes with them. Just looking online, I don't see a cheap kit for the carb. If you know of a site, let me know.

 

[daveofds]

Rebuilt the carb, but I think the problem is with my linkage to the governor. I left that linkage intact when I rebuilt the carb. But before that I watched a Youtube about how to adjust the governor. The adjustment screw on my engine is held in place by a collar and is to be turned all the way to the right with collar loosened. When I use the lever on top of the carb to throttle the engine, it works just fine, but my throttle to the pedal has none to minor effect on engine speed. I may have misadjusted my governor. Is one supposed to open the carb with the choke lever to set the governor?

 

[daveofds]

I have since this photo of the carb replaced the spring. All the linkages here appear correct. HOWEVER! Behind the throttle mounting plate it appears I am missing a linkage as the only connection between the Throttle slide and the governor is to a spring that is obviously too loose. How is this supposed to be hooked up? I am having trouble finding any kind of guide or resource that shows it.

 

[Hellion]

I have since this photo of the carb replaced the spring. All the linkages here appear correct. HOWEVER! Behind the throttle mounting plate it appears I am missing a linkage as the only connection between the Throttle slide and the governor is to a spring that is obviously too loose. How is this supposed to be hooked up? I am having trouble finding any kind of guide or resource that shows it.

Replied to your other thread, it's a bit confusing but very satisfying when you get all those levers and rods connected.

 

[Hellion]

Could not find a kit with new gaskets. The replacement carb comes with them. Just looking online, I don't see a cheap kit for the carb. If you know of a site, let me know.

The engine code (I mentioned in the other thread) would help but in general the carburetor gaskets fall under the part numbers of:

495606 Kit, Carburetor Overhaul
494624 Carburetor Kit

Both of these sets, on Amazon for example, contain a lot of parts intended for the earlier Pulsa-Jet carburetor as well as the latter so you may get a lot of parts and extras you don't need (yet) but it's often better than buying them one at a time and paying a lot more per piece, plus shipping ...

I use sites like this only to get the parts numbers:

Briggs & Stratton Parts Diagrams

Repair your Briggs and Stratton engine using our way to use Briggs Parts Diagrams. Look up parts using your model, type and code number. Use our live chat if you need help!

www.propartsdirect.net

 

[Thepartsguy]

Predator 212c—$100
intake carb—$40
China flywheel/sidecover—$80

Make a heck of a lot of power with that setup.
Or do what I did and build a Briggs to the hills so you can be disappointed with the power it‘s not making.

Doesn’t matter how much epoxy you use you can ramp and raise then move the ports to wherever you want them. They are gutless and expensive.

I know this isn’t what the thread is about or what you want to hear but I really wish I would of spent all the cash I did on a 212

 

[daveofds]

Is the Predator reliable? I am looking at one and hoping for a sale at Harbor Freight. Hopefully tariffs won’t cause the price to rise before then!

 

[Grizzlymi]

Yes they are reliable. Best bang for your buck and a ton of aftermarket parts and upgrades.