HOW-TO Pressure Test A 2 Cycle Carburetor

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.

My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.

I’ve been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. You will also find many tool and product reviews from top brands on my channel as well.
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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

[mebcool]

Thanks Donyboy 73
I really appreciate your mild mannered personality.
Keep up the great work sir.

[mohabatkhanmalak]

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.

[kddvmkatdaddie]

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.

[EHS]

I always learn something from watching your channel. Thanks.

[johnlanzatella]

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!

[michaelchilders]

Thank you again Don. I’m trying to learn all I can about small engines and your videos never fail.👍👍

[williammoore]

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

[Treestouch]

Thank you for this film, it has helped me further diagnose and repair my equipment🙏

[jim]

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

[wysetech]

Your video's just keep getting better.

[zxztv]

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

[jessemixon]

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

[paulroosa]

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 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

[nashguy]

Donyboy great educational video. Very helpful for a lot of people. Have a great day. God Bless!!!

[rpavlik]

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 😄

[eduardorosales]

Wow thank you for your knowledge. Great info to the point and fixed my problem. Subscribed!

[reganmccutcheon]

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

[andrewsteele]

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

[Jack.of.all.learning]

As always, great video. Your tone and presentation is 👍👍

[waltercooling]

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