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Snow Blower Won't Start - Pops Or Backfires Diagnosis and Repair - Stuck Valve 

Individualized Repair Inc
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We diagnose and repair a no start issue on a Bolens snowblower that is making a popping noise when pulled.
We go through the full diagnosis process and show a quick and easy way to repair this common issue.
The problem ends up being a stuck intake valve that is causing the unit not to run. These like to snap, crackle, backfire or pop badly when this is the case.
Always check the oil level before starting. Sometimes fuel can be mixed into the crankcase causing a similar issue and symptoms
This is an MTD powermore engine used on almost all MTD Pro units, Cub Cadet, Craftsman, Yard Machines, Bolens, White Outdoor, Troy Bilt, Yard Man and many different private label brands
They put these on 123cc, 179cc and 208cc models of these units
Like and subscribe to see more helpful videos like this one! Save some money by doing it yourself!
#troybilt #cubcadet #mtd #craftsman #bolens #smallenginerepair #individualizedrepair #smallbusiness #diymaintenance
About Us:
My name is Martin. I have been repairing tools and small engines for almost 20 years. We operate a small engine repair shop in Illinois. We service / repair Briggs & Stratton, Kohler, Kawasaki, John Deere, Cub Cadet, Toro Tecumseh, Loncin, Honda, Craftsman, Husqvarna, MTD, Troy Bilt, Simplicity, John Deere, Exmark, LCT, Generac and many more brands. We work on riding mowers, walk behind mowers, snow blowers, zero turns, generators, pressure washers and much more. We normally repair about 3,000 pieces of equipment every year and look at many more that are beyond an affordable repair. Hopefully our videos will save you some money and give you the information you need to work on your own equipment or figure out the issue at hand.
Disclaimer: Links included in the description are affiliate links. As an Amazon associate we earn from qualifying purchases. There will be no additional charge to you for purchasing here. We appreciate your support, which allows us to continue to provide original content!
Please be careful when repairing any piece of equipment and follow all possible safety measures. This video is for entertainment purposes only.

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10 сен 2024

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Комментарии : 62   
@Artburg
@Artburg 7 месяцев назад
Just garbage picked a Craftsman 8hp snowblower. Cleaned carb and was just popping. This morning pulled valve cover and stuck exhaust valve and rocker loose. Fixed and running great in 10min,thanks👍👍
@IndRepair
@IndRepair 7 месяцев назад
Awesome job! Thanks for your comment and for watching!!
@TJ_Romano
@TJ_Romano 7 месяцев назад
Excellent and very well-done video, thank you!!! After checking spark and removing/inspecting the carb bowl, float, & jet, I suspected a stuck valve. Your video confirmed this and clearly showed the technique to diagnose and repair. My 2016 Cub Cadet 2X 26HP blower with a 243cc MTD 375-SU engine had a different design (seemed like an improved design) of the rocker arm and clearance adjustment , but the same basic idea. My exhaust valve was stuck. Also, you provided very good background info.
@IndRepair
@IndRepair 7 месяцев назад
Great job! I am glad to help. Thanks for watching!!
@RichGreaves100
@RichGreaves100 8 месяцев назад
Had exactly this issue and this video led me to the solutinon! The exhaust value was stuck! Few mins with WD40 and a little persuasion freed it right up! Thank You!
@IndRepair
@IndRepair 8 месяцев назад
Awesome! Great job! So glad you got it back running!!!
@aamirshahzad8060
@aamirshahzad8060 Год назад
Had a similar issue on yard machine. Took me forever to figure it out. Thanks for the video
@IndRepair
@IndRepair Год назад
Awesome! Glad you got it figured out! Thanks for watching!
@nurseratchet2634
@nurseratchet2634 Год назад
Thanks for the up close view and info on setting the valve clearance. I have a feeling I will be doing that soon. 👍
@IndRepair
@IndRepair Год назад
Thank you for watching! Glad to help!
@antoniohuertas8909
@antoniohuertas8909 Год назад
Hey now! Now there's some great stuff in this video! I might have to save this one for future reference! Thank you!
@IndRepair
@IndRepair Год назад
Thanks for watching!!
@bigoil7
@bigoil7 8 месяцев назад
Man, what a help this video was. I pulled the cover and on pushrod was popped out of the rocker arm seat. Didn't look bent, so I got it back in place and ran it for a few seconds with cover off, seems smooth, and everything seems fine now. Could a backfire when I shut it down the previous time have caused the pushrod to pop out of place? Thanks so much, keep up the good work!
@IndRepair
@IndRepair 8 месяцев назад
Many things can cause this but likely a little bit of rust on the valve guides or piece of debris kept the valve stuck for a moment then was able to pop back out. I would lube them up well and run it. Thanks for watching!
@RichGreaves100
@RichGreaves100 8 месяцев назад
Thanks!
@IndRepair
@IndRepair 8 месяцев назад
So glad to help thank you!!
@thewolfman61
@thewolfman61 Год назад
Hope mine is that easy a fix, 1 year old blower with maybe 2-3 hours on it and sat for a year. Sounds like pops throughthe intake. Of course a week before snow predicted it didnt want to start. Gotta get in habit of running machines for a bit during their off seasons.
@IndRepair
@IndRepair Год назад
Yeah this is one of the most common things on any of these blowers (behind carb issues of course). Thanks for watching!
@davew657
@davew657 8 месяцев назад
The hose coming out of the valve cover, you just stuck it in toward the general direction of the carb. Mine has a plastic nipple on carb cover to accept that hose and the oil fumes go directly back into the carb. Thanks for the, how to, valve adjustments.
@IndRepair
@IndRepair 8 месяцев назад
There is a tab there on the intake, it just slides right on. I did make sure it was on afterwards but this one slid on really easy almost like it didn't go on the nipple. Thanks for watching!
@Matt-fr2ul
@Matt-fr2ul Год назад
Surprised yall don't have more subscribers. Love the videos.
@IndRepair
@IndRepair Год назад
Thanks! Appreciate your watching and support!! More to come!
@marc003
@marc003 Год назад
@@IndRepair I have a question about a snow blower repair. I have a cub cadet 528 swe with a briggs and stratton 1350 snow series. The engine hydro locked, I wanted to know if that engine is worth rebuilding?. I have not disassembled the case to examine the extent of damage yet.
@fishnriver
@fishnriver 7 месяцев назад
Learning a lot from you videos. Question, how can you tell the exhaust valve from the intake? Size or location etc.
@IndRepair
@IndRepair 7 месяцев назад
Many times on these small engines you will see the exhaust come into the head and the valve closest (right on top) to the exhaust is the exhaust valve. The same goes for looking at the tube going into the head, you can usually see the stem of the valve if looking straight in
@baddad5781
@baddad5781 Год назад
Bravo thanks for sharing
@IndRepair
@IndRepair Год назад
Thanks for watching!!
@frankie7508
@frankie7508 9 месяцев назад
Excellent repair but he is certainly not the neatest mechanic in the book. I think what was especially good was the close up views of the rocker arm Assembly and how he loosened up the stuck valve. Thanks for a great video. And by the way you really need an apprentice to clean up your working area!😅
@IndRepair
@IndRepair 9 месяцев назад
Haha I can agree there! Thanks for watching!
@WARTHOG311
@WARTHOG311 Год назад
Great info, my husqavarna is dumping gas out of the carb and backfiring it runs well other than that. Do you have a video or some tips? Would be greatly appreciated!
@IndRepair
@IndRepair Год назад
What kind of engine and mower are we talking about here? Is there fuel mixed with the oil?
@georgethompson5459
@georgethompson5459 3 месяца назад
If it's Popping and backfiring that means the keyway under the flywheel is brocken and the timing is off.
@IndRepair
@IndRepair 3 месяца назад
Not always the case for this symptom. Bad fuel, valve sticking or fuel in the crankcase will cause the same symptoms. Thanks for watching!
@KSMike1
@KSMike1 9 месяцев назад
Hi Martin, I’ve got the same 179cc on a Troybilt 2410. The ground prong broke off on the starter AC connector. Do you know of any sources for just the plug in that box? I see sources for the switch but not for the plug. Of course MTD just wants to sell the whole starter.
@IndRepair
@IndRepair 9 месяцев назад
Unfortunately they make it so those parts cannot be ordered individually. Sorry to be the bearer of bad news! Thanks for watching!
@KSMike1
@KSMike1 9 месяцев назад
@@IndRepair thanks!
@donmayberryjrsOPE
@donmayberryjrsOPE Год назад
Great video! Why are those valve stems seized up already? Exacting tolerances and specifications?
@IndRepair
@IndRepair Год назад
They are tight tolerances but snowblowers see a lot of moisture and this many times gathers in different places. It doesn't take much moisture to make a tiny spot of rust and keep the valve from moving. Thank you for watching!
@thewolfman61
@thewolfman61 Год назад
I think also since they dont run air filter on snowblowers the intake vales sees more moisture than normal. Especially if mixed with salt. Hope thats the problem with my 1 year old cubcadet
@IndRepair
@IndRepair Год назад
And some of the valve cover breathers just bend downwards and don't go through the air filter or anything. Makes this very common! Thanks for watching
@scottcorrell3139
@scottcorrell3139 Год назад
excellent video! Question, is the intake valve usually on the right side on all those different models? getting ready to get hammered here in northern Maine!!! Would prefer to not use the shovel. thanks again you are truly a scholar of the small engine.
@IndRepair
@IndRepair Год назад
Yes, it sure is!! Thanks for watching!
@IndRepair
@IndRepair Год назад
This issue can happen to either side valve with similar results
@thewolfman61
@thewolfman61 Год назад
Usually intake vale is close to carb and exhaust vale close to the muffkin
@scottcorrell3139
@scottcorrell3139 Год назад
@@thewolfman61 thank you. now to button it back up I should be at TDC?
@IndRepair
@IndRepair Год назад
1/4" past TDC is what they call for
@Johnnysokko168
@Johnnysokko168 Год назад
I have a craftsman that wont start, was sitting for years, drained gas, cleaned carb and wont start. If i spray carb cleaner in it it starts and dies withing seconds, think this could be a stuck valve?
@IndRepair
@IndRepair Год назад
Definitely not a valve issue on this one. Either the black plastic adapter behind carb is broken, gaskets between carb and adapter are bad, gaskets between adapter and block are bad, carburetor is not getting fuel or the fuel is not good. How dirty was the carburetor? Open drain bolt on bottom and make sure there is fuel in the carb is where I would start.
@harjinderjindu6054
@harjinderjindu6054 10 месяцев назад
Hi bro my snowblower throw fire constantly through exhaust, what should i do?
@IndRepair
@IndRepair 10 месяцев назад
It sounds like you probably have an issue with the valves not seating properly or fuel mixed with the oil. Check the oil level first and make sure the cylinder is not full of fuel. If not then check/adjust the valves
@jennylupine1481
@jennylupine1481 Год назад
Great video, particularly detailed step by step diagnose. I have One of the Yard Machine snow blower shown in your video, model 31AS6BEE516. When I cleaned its carburetor, I damaged the O ring of the idle jet. As you mentioned in one of your videos, it causes surge. I wonder if you know where I can find replacements, or any suggestions other than replace the whole carburetor. TIA.
@IndRepair
@IndRepair Год назад
Thank you! The carb kit is the only way to replace it and will cost more than a new aftermarket carburetor unfortunately
@jennylupine1481
@jennylupine1481 Год назад
Any suggestions - buy an aftermarket carburetor, an OEM one, or just leave it? Is there any potential issue if I run my snowblower without O ring on the idle jet? Btw. I watched your videos on the quality of aftermarket and oem parts.
@jennylupine1481
@jennylupine1481 Год назад
Also, my snowblower needs many pulls to start. Sometimes I worry if it can be started. Any suggestions on the potential issues? The spark plug is brand new.
@IndRepair
@IndRepair Год назад
Replace the intake gaskets and carburetor with an aftermarket one and flush fuel tank in my opinion. You will not regret it! Shouldn't take more than 1-2 pulls...make sure you are not over priming
@IndRepair
@IndRepair Год назад
Thanks for watching!!
@drewbush6535
@drewbush6535 Год назад
👍👋
@IndRepair
@IndRepair Год назад
Thanks for watching!
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