HOW-TO Pressure Test A 2 Cycle Carburetor
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- čas přidán 21. 08. 2019
- HOW-TO Pressure Test A 2 Cycle Carburetor
In this video I show you how to pressure test a 2 cycle carburetor to determine the integrity of the needle valve in it.
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Easy to follow and thorough step by step tutorials do it yourself (DIY) videos to help you with your broken lawn and garden equipment including snowblowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, zero turn mower, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor".
#donyboy73 #smallengine #carburetor - Jak na to + styl
Thanks Donyboy 73
I really appreciate your mild mannered personality.
Keep up the great work sir.
GM to Sir. It’s always a pleasure to listen and watch your informative videos. Keep them coming.
Ordering a pressure tester today. Later Dony
very practical info Dony !
Thank you again Don. I’m trying to learn all I can about small engines and your videos never fail.👍👍
You are the best! Came across your vids when I had a short in my Craftsman tractor. You are a wealth of knowledge without the lame " acting" that a lot of others make the viewer go through. And your always spot on. Not just guessing like many others. Thank you!
I have some old 1950's small engines and we also have lawn care machines at home. These videos will come in handy. Thank you and thumbs up.
Thank you Don. You write straight with crooked lines. That means you always give me a new insight how to perform OPE testing a little better, quicker and good logic with inputs and outputs and what to check next.You're the best.
Great video. I always learn something new watching your videos. Of course, by following your videos on how to properly care for my equipment allows me to avoid a lot of the repairs you show in your other videos!!!!!
Thank you Don, for sharing your years knowledge with others I appreciate it- I'm learning that you just can't always clean and put a kit in a carburetor and it work properly- it also seems to make a difference to put back original equipment quality parts when repairing equipment and sometimes it's best to put a new part back in it as opposed to rebuilding the old one
I always learn something from watching your channel. Thanks.
That was a great video - really good to have this kind of general, fundamentals content. Works even if I don't have a Stihl chainsaw 😄
Thanks Don, love your tutorials, I have subscribed and look forward to all that you post, I have learnt so much that I have serviced all my small engines,, successfully, cheers and hello from Queensland
Donyboy great educational video. Very helpful for a lot of people. Have a great day. God Bless!!!
As always, great video. Your tone and presentation is 👍👍
Very handy information, Great test equipment that we had decades ago.
Thank you for this film, it has helped me further diagnose and repair my equipment🙏
Don’t as usual another good video. Thanks for sharing your knowledge. Have a good one. 👍👍👍
Your video's just keep getting better.
Great demonstration Dony!
Thank you
Always showing us great tips!
Learn something new from you all the time I had no ideal you could pressure test a carb thanks
That was a fantastic video, and VERY thorough...thx!
Smashing test :-D
It's too easy to forget testing information over the years if it's a once in a blue moon problem.
Lucky for us, a loverly chap called Don has made lots of help videos over the years :-D.
Thankyou for all your videos Don, the live version of the haynes workshop manual, with tricks and valuable tips :-D
thanks man
Well stated, I feel the same way.
i been here for 5 years don is the best
I do think don is a live version of the haynes repair manual, if you don't have the tool he will show you another way :-D
Very informative and helpful videos, Donyboy. Thank you, you have definitely made a difference. 🙂🙂
Great video and explanations with tips! Thanks man!
TakeCare,
Bill
Dony, you are a born teacher...
i love to teach! i'm not here just for subs
How's she goin'? Some great tips here Dony. Thanks a lot for sharing!!! Take care!!!
Excellent video. I may have to get a tester.
Thanks for adding the tips at the end !
Very informative! Great job!
Great Video Dony
Great information! Thank you!
Great tip for removing pressure from the line.
very very good video Danny thank you for the lessen
Thanks Don. You are the 2 stroke MAN
Great video, thanks for sharing. Will help with keeping my tools in good working order.
I already removed, cleaned, and reinstalled the carburetor on my pressure washer with a Honda engine. Idling and throttle-up running like a charm now. Previously was having to manage the choke lever to get to run continuously. Main jet was clogged almost entirely.
Thank you very very muuuuuuch..!!
Great video and tips.
Godbless..!! 🙋♂️
Very helpful. Great post.
We also do a vacuum test and it indicates if check valves are working, should hold pressure and vacuum if not carb should be replaced not rebuilt
XCLNT ! Another video to make me look smarter. Thanks! CM
Very informative. Thank you. Just rebuilt a HDC 44 on a Homelite Super E-Z. Leaks around the gaskets and won't hold any pressure. So far I've been unable to locate another carb.
PR DESIGNS
This should be everyone's go to spot for information on small engines!
I have always found the info and processes I needed for keeping my engines running properly. Donny Boy is concise and obviously knows his stuff....NO bull**** from him!!!
I do have a question I was hoping someone could help me answer though......I have a Walbro off of a 031 and a Tillotson off of a 041. I have put complete rebuild kits in both and no matter what I do I get a leak down on the pump side. I know the needle/seat are good as I have tested it with that side open under water and the seat doesn't bubble.
is there a tip for sealing up those flexible valves and gaskets on the pump side even with all new parts??
Should i just try running it before buying new carbs??
Thanks DonnyBoy and anyone else who can help
Great video. Thanks for sharing.
Gracias por compartir. Hoy aprendí algo nuevo
Thanks for making this video 👍🏽👍🏽
Great vid , very useful cheers
Great job with that one my Canadian brother 😀 😀
Great video Donny 👍👍
Dony, be sure to add the info about diapham flexability and post height- it can bleed off pressure because it will depress the lever. Make sure the lever arm is at proper height in relation to the carb body
Dony, you have the best videos on CZcams! Good timing as I was considering this kind of pressure tester vs the Mityvac MIT8500. I just ordered the Mityvac because I believe I can use it for bleeding the brakes on my ATV. Can you confirm I can use the Mityvac to do these tests in your video as well. I have seen other vids so I'm pretty sure I can.
yes u can
Thanks for your information 👍
Thank you for this one.
Good video as always
Great tips.
Very very good video thanks you so much
Nice video. I have many engines with different cc's, 50cc rc engine, 70cc hacksaw, 20cc and others most with Walbro Carbs. How I know or calculate the right pressure for each engine/carburetors?
Great video.
Wow, a Tillotson carb on that Husqvarna. Haven't seen one of those classics in quite a while.
Great stuff
thank you for making one of the most informative videos on YT. across all ive looked for this video of yours certainly is the best. i work on husky 61 aswell, im a hire shop repair tech. learnt alot from your Vidz. THANK YOU SO MUCH!
Very very useful information how I can test carburettor without tester
Thank you. Thank you.
Hey Don thanks for VIDEO on pressure testing 2 cycle carburetors. I have a
BVM200VS poulan pro leaf blower. Installed new carburetor can't get it run. Have any suggestions.
GREAT ILLUSTRATION! THANKS
Glad you liked it!
dony..thanks for all the great info but as a rookie I have a question. Is there a rule of thumb as to how to identify the intake from the impulse ?
Great video thx for sharing. Can I get the part # for brass hose adaptor that you have hooked up to use with different size fuel lines. I’ve never seen that particular one Thx
Thank You Don for the valuable information.
Can you please give more information on the Tool that is being used and where to buy
Thank-you sir good infarction
Very nice
Great video, which pressure tester do you think is best?
Brilliant👍👍👍
Thanks It what theydo with car engines but with smoke. Can you do that here too? I have done almost everything but still can not get it running. I have sprayed into the channels, changed the diagphram but not the gaskets because it looked good. It is also good to look over the other externely gaskets after the carburator into the combustion chamber. Any leaks will be disastres to the mashine. Look all the way.
excellent information and ty for explaaining 100--100 video !! BTW were did you buy thid pump, or where did you buy the pieces to make this pump, excellent ty
Olá gostei do seu vídeo, onde posso adquirir uma ferramenta como essa?
Great videos,where can I get a pressure and vacuum gauge like the one u have?
The power of knowledge.
Very good demonstration in the fundamental testing of the carbs. I have one on an Echo weedeater that I rebuilt the carb with a kit but cannot get it to idle correctly. I have to run the idle speed screw all the way in and it barely idles. And it is hard to get it to rev up to high speed without it bogging a lot, regardless of how I adjust the mixture screws. Any ideas?
Assuming you dont have air leaks in the crankcase, try running it without the muffler. If it runs fine check muffler/spark arrestor screen to see if its plugged up.
Donyboy; have Husq 266 with Tillotson hs254b. My tester shows inHg and mmHg. Any idea on what the 7 psi should be on my tester? Also, what does it mean if the pressure test goes up, then very slowly goes down and settles to a spot, then stays there with no further decrease?
What purpose does that hole on the carb cover plate serve? Will a Mityvac that has a pressure pump feature work the same as the pump you are using?
Great tip. Thank you for sharing. 🇨🇦😎
You have a video that covers the check valves throughout these carbs?
I have a 280 cc 2 stroke engine with a Walbro WB Carb. The carb on the unit came with a PSI popoff pressure of 11 PSI. The company says the pop-off pressure should be 17-19 PSI. How do you calibrate the Popoff pressure making it 17-19 PSI. Thanks in advance for your assistance.
Solid video
thanks
I preprime them and then test, it just takes a second to do it 😊
Trying to get vintage poulan running it's a s25cva counter vibe do you know how I can get new carb can find one due to its age
Hi Dony, excellent vid' from you as always, but, you don't test the pop-off pressure? Isn't it an important thing to check with those testers?
I've learned on an rc website that it should be at 0.8bar
Hi from France
Hey Don, so what do you do when you have a two-cycle carb with a primer and it passed all leak tests but will not pull fuel when priming?
Hi how can i make one of those pressure tester or where can i buy one. Thank you for the information you share
The inlet side of the carb, is that the diaphragm side or the reed valve side? What is the best way to know for certain you're putting air in the correct tube of the carb to check the seat valve? The weed eater I'm working on, Poulan Pro 335, did not have gas lines on it.
Does this apply to motorcycle carbs too?
Is there a way to test primer when primer is exterior to the carb so primer has line to carb and line to tank return.
Where did you get the pressure tester from, and what is the part no, great vid by the way
Make your own-it's easy and cheap
Thank you sir appreciated your kind experlation hope you will give more creations in future
@@waltercooling8907 ok, are you going to share this info ???
How we change the pop-off pressure on walbro carbs?
hello if i squirt brake cleaner in the fuel entry point it comes straight out the return pipe part is my needle not seated ?
Hello sir! I got a stihl 015l chainsaw. Rebuilt carburetor however it turns s on stays on with throttle. H is all the was down but when I start to open it chainsaw turns off. Any ideas.
Top
Great vid. Looking for a replacement carb for a 1975 lawnboy, any suggestions?
check ebay
Would this test work on a fuel pump?
Do you have the part number for the pressure tester.
@donyboy73 what if the pressure drops over minutes?