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- เผยแพร่เมื่อ 14 ต.ค. 2024
- Briggs Flo Jet Carb , Why they leak , Part 2. The Briggs & Stratton Flo Jet , Updraft carburetor can leak from a few places. one is the needle valve not seating, this will flood the bowl and push fuel out through the bowl vent. The passageway near the emulsion tube that goes into the carb throat is to let air into the emulsion tube. There is a hole in emulsion tube by the tapered part , will let fuel go around the emulsion tube . If the emulsion tube leaks at the taper where it seals to carb , it will leak past and leak out of the bottom of the carb. Briggs jet screwdriver 19062. There are several ways to fix leaking flo jet carburetor on a cast iron single cylinder engine. Can get the Teflon washer , Briggs & Stratton 4184 10-Pack Of 391413 overhaul kit.. valve grind compound. Needle valve , brass float , plastic float are parts of the flo jet carb. Flo jet Carb thread repair , 5/16 - 32 NEF tap, for the emulsion tube , and 1/4 - 32 NEF tap for the idle jet Small engine repair briggs & stratton cast iron single cylinder engine. Wtbm123. 394989, 391071, 299720 Carburetor Overhaul Kit , adjusting carb.
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These carburetors were a mystery to me. You did a very detailed job of explaining everything.
Thank you
Glad to help
Thank You. Very well and accurately explained. Those anti-leak washers have a 1/8" hole and 3/16 OD. If you find some Viton tubing or fuel resistant tubing that size you can take a small thin slice off it and use that.
Yes , and some people use a thin nitril o ring . .
Thanks for taking the time to explain why those Flow Jets can leak and how to fix it.
Thanks for stopping by
Nice cut away carb, it makes it much clearer how the carb is working :-D
They are pretty simple once one figures them out , Thanks for stopping by
Great illustration and instruction.
Thank you
GR8 HELP!!! Was wondering why fuel was dripping out and turning the screw made it go or stop. Had a few issues, gasket leaking, dirty seat for idle screw, poor spark and once going running very rich. Your o-ring idea solved the flooded chamber so Ive gotta get some of those teflon washers. !!!!!!! Thank you v.much WTBM for your Solutions and Experience !!!!!!! I had to trawl thru a large number of videos before finding yours explaining the problems you would get with the needle not seating.
Thanks , Hope you get it all sorted out and up and running well again
Great video! My Briggs re-build kit came with needle valve installation instructions that recommended leaving out the needle to float spring clip if the engine had a fuel pump. I can't say that alone solved my surging problem, because I cleaned the carb before I reinstalled it. The engine runs well, but the carb does have a very slight leak from the welch plug. Your excellent tutorial explains that issue very well. Thanks!
Glad it helped!
Valve grinding trick 👍👍
Thank you for sharing.
Next thing I’ll try…
Hope you get it sorted out
Well, there's some very helpful tricks of the trade. Thanks for sharing.
Thank you for watching and commenting
Really glad I came across your channel, very helpful and clear info!
Glad it was helpful!
I don't know how the logarithm reads my mind! I wanted to know what thread size was the emulsion tube but, I didn't even try to search for that fact and here it is presented!
I don't see part one.
Thank you for stopping in . th-cam.com/video/NnY1EEVFff0/w-d-xo.html
Good presentation Terry 👍
Thank you
Thanks for a splendid video. Do you know whether one can buy a carburettor kit for a rather ancient 8000 the engine. It's on an old rotavator, which belonged to my wife's grandfather. I would love to get it running again for her.
Many thanks.
Find the model number on engine and google it . Or put the number in on Partstree web site or any site that sells parts . Usually can find part numbers that way
Excellent videos; many thanks! My flow-jet (1960 8hp) leaks gas when its not running but doesn’t leak when it is running. The gas drips off the screw at the bottom of the oil bath air filter. I presume it’s coming from the emulsion tube? Where the gas leaks inside the carb and maybe dribbles out that screw? I have a carb rebuild kit ordered. Hoping to solve the problem. Your videos will really help-thanks again.
Thank you for stopping in and commenting . I am sure you will get it fixed up .
Thank you for sharing your skills!
So nice of you
Thank you for showing me how is done
Thank you for stopping by and commenting . Hoping there is something in each of my videos that can help someone .
Congratulations for your video ,your are a pro. well done
Thank you! 😃
hope to see more, keep up the good work
Thank you
Excellent, thank you
You are welcome!
I'm gonna try these tips. My flojet leaks like crazy and I think this should fix it
Hope you got the leak stopped
@@wtbm123 I'll just say it doesnt leak like it did. I sold it a few months ago.
Sorry if this has been asked before. What is the hole on the bottom of the carb called? It it located along the bottom in between the air filter and before the air turns upward. It looks like it has a screen on it. I get leaking when the engine is off but the fuel is not shut off
Basically just a vent drain so if floods or gets water in it , a lot of them have a small stone filter in it
Good job. One thing I found out, you prob already know, the Chinese emulsion tube has DIFFERENT threads, be careful
Not all do , but you are correct as some do , I did run into one like that with a different thread
Briggs and Stratton 8hp model 190412 I could sure use a picture of the bowl gasket.
Mine was destroyed removing the bowl
That is prob a 3 bolt carb . Look up a carb kit and it will show you the gasket , 8 hp should have 3 bolts holding the top on , and the flow jetts for bigger engines had 4 bolts holding the top on . www.amazon.com/Repair-Briggs-Stratton-394693-291763/dp/B078JGD1C1/ref=asc_df_B078JGD1C1/?tag=hyprod-20&linkCode=df0&hvadid=380023036458&hvpos=&hvnetw=g&hvrand=731707022549583186&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9058989&hvtargid=pla-1008201230152&psc=1&tag=&ref=&adgrpid=79073044298&hvpone=&hvptwo=&hvadid=380023036458&hvpos=&hvnetw=g&hvrand=731707022549583186&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9058989&hvtargid=pla-1008201230152
@@wtbm123 ... sorry for the late reply, yes I ordered the correct gasket.
At 5:15 what is the thread pit h and size if those screws I had one break off, I'm gonna left hand drill bit from the bottom side so there is a chance the threads will be damaged
If you are talking about the bolts holding the top on , i am not sure. Sorry .
I've been working on iron 8's the last few days.
First one was sitting for many years inside the porch. It was a simple clean up on the carb and rewind. Smoothest up draft I've ever done.
Last night I parted one out and it had a plugged needle and seat and the main butterfly only opened 1/4 the way. It had a shiny new emulsion tube in it and after I pulled it out the btttrfly opened up all the way. While reassembling I noticed the btttrfly issue again.
The upper end of the e tube wasn't in the idle circuit tunnel, rather it was coming up the Venturi. I thought the emulsion tube was a different length but your video proved that that wasn't the case. It doesn't seem to be bent is there a way I can get it to go back into the idle circuit tunnel or am I going to have to buy a new one?
I leave the top loose till i get the tube in and seated . If tube is not bent , you may need to screw it in and guide the top into the hole . If it missed the hole and was tightened it may be bent . I have straightened some that were only slightly bent
@@terrymatthey5840 the idol circuit tunnel isn't big enough for the emulsion tube to fit. I tried putting it in just the top part of the carburetor
old tube may be stuck inside
@@wtbm123 I found my box of spare carbs for the iron 8's. The emulsion tube has a bigger diameter than all the others that I have. It was shiny clean when I pulled it out. My guess is the previous owner purchased it to rebuild the carb and got the wrong one. I never knew their were bigger ones I have a smaller version from a tiller but now know their must be bigger ones as well.
Thanks for trying to help.
Another Cool 👍👍
Thank you
How do you adjust plastic float? Heat?
you may be able to heat some or bend a slight bit . For the price i usually get a brass float .
I just rebuilt one of these on a 12hp B&S engine because the old float was leaking. I'm now getting a steady drip from the bottom center of the carburetor when the engine isn't running. Running no drip, would this be due to me not having the emulsion tube seated correctly? Also is there a plug in the very bottom of the carburetor near the choke plate? That's where it seems to be leaking from, it doesn't seem to affect how the engine runs.
That is a vent on the bottom of carb , and yes most likely the emulsion tube is probably what is leaking
I took it apart rust today and re set the float and reseated the emulsion tube. No more leak.
If the carburetor is worn out and leaking air around the butterfly shaft , is it better to find an old one or are the $25 China made okay to use ?
Some of the China ones are ok , most have a plastic float . some you need to loosen emulation tube and re tighten it . But if the shaft in yours is really worn it is prob worth the chance
Good morning sir. I wanted to know do you sell these . I been looking for this carburetor for my Sears tractor SS15. BRIGGS AND STRATTON MOTOR
I do not , but can find them on ebay or amazon . Choke control can be different so watch for that . Some people get them from isavetractors
@@wtbm123 ok I'll have to check them put. Thanks a million. And I have 1 already up there but I can seem to get it tuned right to save my life lol
Hey sir.. the back brake light round cover.. does that screw off or do I have to pop it off. I try turning it counter clockwise but it just keep on spinning
@@jorelsmith1985 Should pop off . You can still buy a replacement light that looks the same if needed
@@wtbm123 ok thanks. I'll give it a try this afternoon when I'll get home. I'll keep u updated. My cylinder head came in yesterday from I save tractors
Thanks you for your help me out I put a new o ring on the bass tube i make a new one ring i cut off hose no more lik
Glad it helped
Great video thanks for it
Glad you enjoyed it
👍👍
Thank you
Thumbs up
Thank you
AWESOM video. I have a big 10 AllisChalmer And the Gov springs are wrong. You do a vid on Gov springs. Briggs 243431.
Some have two springs and some have one . Some manuals are still available at the briggs and stratton web site