Cheap fuel pumps are junk!!?? 

Although your “5 seconds” to measure fuel flow isn’t consistent, this video did steer me in the right diagnostic direction to investigate an issue with a lawn tractor, so thanks very much! 🔧👍

Thanks for the video ! Been tweaking my zero turn for almost 2yrs. Always something! Crank, takes forever to start. Replaced a good fuel pump. Starts right away. Thanks so much

With all respect to you for providing these troubleshooting hints, I did have some concerns. When you were testing the original remember that the pump was already primed so the amount of fuel delivery during this test would be more than when you tested the new pumps. Also I feel that the Pulse tube from the rocker cover should have been replaced before the testing to ensure that maximum vacuum was achieved. Other than that, your video provided enough information to allow for proper fault diagnosis. Thank you.

Thanks, bro. I bought cheap ones from Amazon and fix them into my generator. But the fuel problem was the same(not enough fuel pumping to the engine). As these were brand new ones I thought the vacuum system was the problem. Check the values and did many things spending almost two days. But the problem remains the same. Finally, your video solves the prob.

Thanks for showing people this! It could cost them an engine if they don’t check the oil level to make sure gas isn’t getting sucked back into the engine!

Thanks for the info. This is exactly what I'm dealing with. I installed a cheap pump on my 20 hp Briggs V-twin. There's no fuel going to the carb. Yet, when I pour gas into the hose to the carb and reattach the line, it runs perfectly until the gas is gone.

Great video - many many thanks. I have a Toro Zero Turn 24HP that has this year had two fuel pumps fitted this year and is still surging (hunting). It has been driving me mad. So many may thanks again.

Good information. Thanks for the extra steps to show us the difference.

Your vacuum line is cracked. Very good video.

Thank you and kudos for your video. I did exactly what you showed to do and it showed my problem right away. I bought the original fuel pump for kohler and it is running great! Thanks again!

Even with name brand parts it is hit or miss. Nearly all are Chinese parts. Ironically, I've had one crappy "cheap part" that didn't work and one that didn't fit. I have had 3 "quality" Oregon/Briggs carburetors/pumps that didn't work right. I really think it's a roll of the dice anymore.

Incredible. Bought three cheap pumps and my gator ran like crap. Put Briggs Stratton brand and Gator truly runs like new!

Bingo ! I bought a ZT1 cub cadet. It wasnt running well because mice got up in the engine and chewed the coil wire. Previous owner said he put a new fuel pump on it . He gave me the old one (OEM Walbro). I was experiencing problems with the way it ran. I watched your video, changed the "NEW" fuel pump CHINA JUNK, and put the old Walbro back on, and it starts better, and runs great ! Thanks bro.

Thank you for this ,ordered this pump and mower is working well.

Because of your test procedure found the problem with cheap fuel pumps, either not working or not pumping fuel correctly. Thanks!

Good to know! Glad I looked here before I submitted my order

Thank you for providing a link to the correct part

Thanks for showing this! People will be

Went to a 12v low psi pump went threw 5 Kawasaki original pumps all leaked in the the pulse line my mower has never ran this good relay and switch i turn off my pump and let my carb empty and haven't had a single issue with carb or pump 5 years now cost 50$ in all

One time my dad was angry because he took the car to get a fuel pump. This was back in the late 80s. He was mad because the mechanic wanted to charge him a whole lot more than what HE thought that he should pay for parts and labor (my dad was a cheapskate btw). Anyway, I heard him say 'What is it, a gold plated fuel pump?!' I suddenly had a vision when he said that and busted out laughing. Michael Douglas and Kathleen Turner staring in 'The Gold Plated Fuel Pump' from Romancing the stone and the jewel of the nile. I laughed hysterically. Of course, my dad didn't quite see the humor in it and gave me that dumb look he always gave LOL.

Good advice, Problem is Mikuni is junk too!! Dealing these issues now, purchased a Oregon brand.. with the screws in side , It worked for a few hours then started with same problems as the old one that had been on the mower for a few years, So I went down to a mower dealer & purchased the Briggs & Stratton brand , Just verified it was made by Mikuni, It worked for an hour or so before giving me problems, I can a switch the pumps back & forth and they may work for 5-15 mins before they stop pumping. And I’ve checked every other possible culprit for the issues, So it has to be I got 2 💩 fuel pumps in a row, 2nd of which is the brand you recommended, Even the guy at parts counter made a slight reference that they had recently received a bunch of bad fuel pumps.

Same problem. Watched your video and bought oem pump and temporarily fixed problem. Problems started again this year. Put a new vacuum line on , no help. Made a temp gravity fed fuel tank and it ran fine. Took an air hose and blew threw gas line before filter. Now its got plenty of gas. Have watched bunches of yt videos on fuel problems , but no one has ever suggested that. Guess Ill take tank off and clean. Maybe I should make a video.

Thanks man that’s awesome and great show in real world testing! 👏🏼

This is so helpful. Thank you

Ran into two out of five new ones of the “cheap” pumps that were bad right out of the pkg!

ok I have been having trouble with my mower. wen hot missing. pull choke and it runs better. I did put one of those cheap ones on it a few months ago. Ordering a factory one right now!!!!

Look to make sure that the pump inlet marked "P" (pulse line) isn't connected wrong. There's your dinner...

I learned this the hard way. Cheap one leaked gas as soon as i got done putting it on. Had to get the original to be the best one. And no leaks

Nice to know. Even if the 1st junk one pumped enough to run the motor it would have been dumping gas into the oil sending the rod out the side. They certainly look nice but dangerous junk to use. Buyer beware. Mikuni makes great stuff, have their carb on the Harley. Thanks for the great vidoes and have a great day.

Good video👍🏼 very informative you save us time

The golden rule is to not skimp out on any component that has anything to do with fuel and air.

Before watching… I just bought two pumps from hamazon and they were Mikey Rooney models and failed out the box. Good advice

I just bought factory pump today I hope it solves my problem of shutting down while mowing.

Thanks for telling me that about the pumps appreciate it I'm doing the pump on my Brute Force 750 just about went bought the cheap one I'm definitely going to check my vacuum line cuz I seen that yours is a little bit cracked but it doesn't look like it's affecting yours but like I said Thank you for telling me about the pumps

Thank you!!!

Thank you so much!!!

Thanks I work on small engines never changed one , now I know .

your vacuum line fron the valve cover going up to the pump has 2 visible cracks and will lose vacume-

I took one of the cheap pumps apart and switched the big springs around and it pumps like a champ now, I dont have a you tube channel or I'd show u guys but u should try it it worked for me lol

thanks

Awesome, man! Thanks so much. Definitely something that would have me chasing my tail in the future! #stayrad

I just used one of the amazon ones on the same engine. A day later there was fuel shooting out the muffler. I checked the oil and the dipstick was showing way full all the way to the top. Sure enough gas had filled the crankcase just like you said. These really are no good.

Yep and the issue im having is the fuel pump is releasing to much fuel and not enough fuel so which means why I'm getting a lean and a very rich condition.

Cheap is just junk stuff, buy oem if potential, I’ve had good luck with hipa parts also 😊

Yes, that's why I bought a Toro one for $50 but I did by a knockoff carb for $48 versus $326 so I will see how the carb works??? Toro no longer sells the carbs so I think Amazon one!!!

Sometimes people return them because either they messed it up or they swap with their bad one.

Thanks for this

Yep. Good info.

I also got a cheap fuel pump and it's not pumping anything through 😢

I don't know if you know this you can run a little higher octane in your gas for that more to handle bigger jobs in thicker grass and it don't bog down as much even know it's running right Hustler raptor

I bought a eBay fuel pump, for my Dodge Charger, after 2 weeks , rough start and over cranking.... bought the $200 fuel pump with lifetime warranty at auto store, pump now makes a “pumping sound” the eBay pump never did, and car works perfect again.... lesson learned

Thanks for the info. Obviously you like Mikuni. What to you think about Walbro brand ones?

I just opened my carburetor, and it was clean as a whistle but had a ripped bowl gasket. I replaced the gaskets in the bowl and cleaned out the main jet. Same result. Is it possible that it's the fuel pump?

Ahhhh!!! Your link doesn't work anymore!!! I am repairing a mower that didn't even have a pump on it... so I'm looking for the vacuum line too.

Cut video and started back up - could have switched?

I'd recognize that packaging anywhere........... those come from the wonderful land of China😁 Mikuni is Japanese made😊

Nice tips thanks. I was wondering if you could mess something up if you tried to clean an original fuel pump with compressed air and carb cleaner. Because I'd did that and got it pumping fuel and it fired up and I used it to mow but now the oil on the dipstick smells like gas.

That was 3 years ago; since then chinese items improved A WHOLE LOT; i buy lots of stuff, i know; my guess is that those pumps now are very good, ordering one now.

The link goes to a metal fuel pump. Do you have a good part number? And what about that primer tube? Do you know where to get a good one that doesn't split in a couple of months?

I 100% respect your review but I'm two seasons in with my "cheap fuel pump" and works at full throttle on my zero turn without any bogging and starving mowing every day of the week in Texas

If you put a new fuel pump on your riding lawn mower and it doesn't pump gasoline. What could be the problem? If I had a clogged fuel line to the gas tank How do I fix that? I think it looks like a little filter in the tank.

Is that the primer line or is the no name made different and that is the out put line?

I ordered this pump, because mine smokes when it trys to run. Is this from gas in the oil? Also, what do you think about going with an electrical pump? I would like to see a video on how this is done.

what about the purging step? or priming step?

What causes them to go bad what breaks in them?

Uses the word "prime", doesn't let the pump prime.

Hi I have a question about a miller bobcat 225 welding machine, it start but when I put the switch in the off position it wouldn't cut off its still running.

How are.you I'm working on a john deere 115 it's not a LA 115 there was water and fuel in the tank I cleaned all of it and now there's no fuel reaching the fuel filter which is at the left side corner of the motor when you Stat it still no fuel reaching fuel filter ease help

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why not just eliminate the fuel pump and do a gravity feed ? The carb should not overflow since the needle valve / carb floats wont allow to much gas in the carb.

Have you tried a Carbhub brand? Most of their stuff seems ok...

The pump has no power source?

Does the 4 screw unit have a rebuild kit?

Would this work on a 25hp Kohler?

Hope that's my problem, fuel in oil❤

Looks like 2 cycle fuel or bad gas!!

Anyone else keep rewinding trying to figure out why ( 2”” 5 seconds) bursts is really ( 1”” 3 second and 1”” 5 second) bursts. lol. 😂

Ok that was not 10sec on the second one

From the looks of that fuel, you aren't using ethanol free gas or you are a your station is selling you ethanol fuel and you don't know it. None ethanol fuel will be clearer that that was, the ethanol eats up parts in the pump and carburetor. Check into it, it will save you money.

So an electric fuel pump is less expensive than these anyway. I am questioning using this style.

He had bad gas. It won’t start with that old gas, fresh gas will be no problems.

what is deferent between 3 ports vs 4 ports pump? i dont see many for sale with 4 ports. can i use 3 ports pump?

thank you test don"t guess

So typical of many china made products, and can be hard to find quality anymore!!

Did you replace the crack rubber vaccum (?) hose?

Your inlet and outlet are wrong.

The gas looks bad

I have the Mikuni original fuel pump with B&S stamp on it. I also have a crack on the soft line going into the valve cover (vacuum line). My 24 hp B&S will not pick up any fuel from the tank, i mean zero fuel. Was hoping to just replace the soft line but read where you stated, "It's a pulse line very little pressure goes through it to operate the pump." Do you think I have a pump that has failed or something else. I've changed the fuel filter and checked all the fuel lines from inside the tank to the pump and to the carb. I can spray starter fluid into the hose that leads to the carb and it fires but nothing I try will get this thing to pump any fuel.

Go electric pump!

The pumps your putting on are dry

👍

Another solution would be a electric fuel pump. Really good share! Larry

BOUGHT THAT SAME CHEAP FUEL PUMP. CANT GET IT TO PUMP FUEL. PIECE A SHIT. MY OLD MEDAL ONE WORKS BETTER. THANKS FOR INFO. TEXAS.

fuel pumps is good ya might wont to change the tube that goes in the vale cover first lmao

I purchased one of these pieces of shit! It’s criminal. I couldn’t find the authentic brand or else I would have purchased it. The fuel would not even come out!!!! Than the plastic hunk of shit broke at the fuel line! Which was actually why I was replacing the original part !! Than the bf wouldn’t let me but the right part due to price.. so on another go of this hunk of shit his telling me it must be something else wrong with it! I’m saying NO it’s this hunk of shit part! Thank you because he believes me now and said sorry for making me but this Hunk of shit!

Sorry, but I have to disagree with your video. I’ve used the cheaper pumps without an issue for years. It doesn’t matter how much fuel is coming out of the fuel pump. As long as enough is coming out of the fuel pump to keep the carb bowl full of fuel. The float and the needle valve control the flow of fuel into the engine, not the fuel pump. As long as you’re getting enough fuel into carburetor you’ll be fine. I’ve never had an issue with one and I’m not paying five times as much for a Briggs & Stratton that are made in the same Chinese factory. perhaps you weren’t getting as much fuel as you expected because your vacuum pulse line has obvious cracks in it. The pump I prefer are made out of metal and can be opened. Cleaned repaired and rebuilt if needed. I’ve never had to do any of that to them and I’ve had them on my machines for years if your motor surging you have carburetor problem and as you mentioned, you had water in the gas that has nothing to do with the fuel pump. Sorry if my comment contradicts your entire video but I want people to know what you’re telling him is not necessarily the case or at least it hasn’t been for me I will continue to buy the metal case Chinese pumps. You really have nothing to lose. If you purchase the pumps from Amazon if you have an issue or don’t like them, you can return them. Try that at your Briggs & Stratton dealer.

liar

Would have been nice, if you provided the Mikuni or Briggs and Stratton part numbers.