Briggs and Stratton only running on one cylinder due to diodes

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 120

  • @bctruck
    @bctruck ปีที่แล้ว +7

    Very methodical diagnosis!! Great catch man!

  • @halflife82
    @halflife82 11 หลายเดือนก่อน +8

    Great video! That’s a hard one to trace as most people would see spark and think good!

    • @Wrenchesandrods
      @Wrenchesandrods  11 หลายเดือนก่อน

      Thank you. I appreciate your kind words!

  • @MikeysXS
    @MikeysXS 28 วันที่ผ่านมา +1

    Thanks for the video! I’ve got a snapper with a very similar motor, single cylinder fire. You might have just saved me a lot of time!

    • @Wrenchesandrods
      @Wrenchesandrods  28 วันที่ผ่านมา

      @@MikeysXS that’s why I make these videos!!! You’re welcome

  • @MikeysXS
    @MikeysXS 28 วันที่ผ่านมา +1

    2:24 Wow, your valve cover came right off! Mine was glued with sealant, I’m guessing someone worked on it before now😁

  • @tylerstrain8825
    @tylerstrain8825 14 วันที่ผ่านมา +1

    Just found a dead cylinder on a GX620. Was trying to find out if the stop diode could cause a no fire issue on an individual cylinder. Thank you for the video. You might want to consider a TA100 SmarTach+. With it you can read min/max voltage as well as RPM without having to pull a plug wire which would prevent false diagnosis with a plug tester.

  • @kentait7153
    @kentait7153 3 หลายเดือนก่อน +1

    You sir, are a genius! I did not realize the harness contained diodes. Simple fix. Thank you!

    • @Wrenchesandrods
      @Wrenchesandrods  3 หลายเดือนก่อน

      @@kentait7153 thank you! I'm glad I could help!

  • @DukeWright
    @DukeWright 6 หลายเดือนก่อน +4

    Chased this issue for two days, this video got me to the problem. Thank you. Well done!

    • @Wrenchesandrods
      @Wrenchesandrods  6 หลายเดือนก่อน

      Thank you! Be sure and subscribe!

  • @jeffreyarnold5278
    @jeffreyarnold5278 3 หลายเดือนก่อน +1

    Thanks for the video, helped me a lot, especially tell that you still have spark, but you still have a problem.

    • @Wrenchesandrods
      @Wrenchesandrods  3 หลายเดือนก่อน

      @jeffreyarnold5278 thank you

  • @michaelhouy1382
    @michaelhouy1382 3 หลายเดือนก่อน +1

    My 18hp Briggs and Stratton V Twin is acting the same way. Great troubleshooting. Ill dig into it tomorrow . Ive liked and subscribed!

    • @Wrenchesandrods
      @Wrenchesandrods  3 หลายเดือนก่อน

      @@michaelhouy1382 thank you!

  • @jeffglann9894
    @jeffglann9894 7 หลายเดือนก่อน +3

    Great trouble shooting! Thanks for sharing the knowledge and experience. God Bless you and your business!

  • @MB123X69
    @MB123X69 7 หลายเดือนก่อน +2

    Thanks for the vid, this might be whats wrong with mine. Better this than a push rod. I would have never would have thought of this with a spark on both sides. Thanks for taking the time to post!!

  • @johndrzal6193
    @johndrzal6193 7 หลายเดือนก่อน +2

    This was exactly the problem I had. Many, many thanks for posting this repair.

  • @leedeborde5690
    @leedeborde5690 11 หลายเดือนก่อน +3

    That was awesome I've seen that before but forgotten about it thanks for the info 😅

  • @kozarichuk
    @kozarichuk 7 หลายเดือนก่อน +2

    Didn’t have the same problem, but this really helped me. Thank you so much.

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน

      Thanks for the positive comment!

  • @clutch5sp989
    @clutch5sp989 2 หลายเดือนก่อน +1

    I'm chasing a low power issue today. Did notice my engine has the swirl or blowey thing that keeps the cylinders cooling fins clean. B&S also provides flaps to inspect these areas.

  • @KevinCovert
    @KevinCovert 10 หลายเดือนก่อน +2

    Thank you for this content!

  • @jasonsippola183
    @jasonsippola183 6 หลายเดือนก่อน +3

    Thanks for video. Time to troubleshoot.

  • @Twohandsranch58
    @Twohandsranch58 8 หลายเดือนก่อน +4

    I have a 22hp BS running on one cylinder so i will go through that process and see if it works. Thanks for this video.

    • @Wrenchesandrods
      @Wrenchesandrods  8 หลายเดือนก่อน

      You're welcome!

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน +1

      Yes. The new diodes fixed it right up!

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน +1

      @JEFFQUICKLE9 not that I know of, but you can order them on Amazon

    • @Twohandsranch58
      @Twohandsranch58 7 หลายเดือนก่อน +1

      My problem is not the diodes. I checked them and they are good. Put new coils and plugs on and still down one cylinder.

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน +1

      @@Twohandsranch58 do you have compression in that cyinder?

  • @MikeKlinkner
    @MikeKlinkner 4 หลายเดือนก่อน +2

    Great diagnosis

    • @Wrenchesandrods
      @Wrenchesandrods  4 หลายเดือนก่อน

      @@MikeKlinkner thank you

  • @gregpendleton4957
    @gregpendleton4957 4 หลายเดือนก่อน +2

    This was so very helpful!

    • @Wrenchesandrods
      @Wrenchesandrods  4 หลายเดือนก่อน

      @@gregpendleton4957 thank you

  • @henrysmith8012
    @henrysmith8012 8 หลายเดือนก่อน +7

    Good catch. I see these engines with cracked intake manifolds also causing dead cylinder.

    • @Wrenchesandrods
      @Wrenchesandrods  8 หลายเดือนก่อน +1

      Thank you! I have not seen one with a bad intake cause a miss yet! Thanks for sharing! I'll put that in the ol brain for later diagnosis'

    • @philliphall5198
      @philliphall5198 7 หลายเดือนก่อน +1

      The plastic ones can crack

    • @rickpendleton7036
      @rickpendleton7036 5 หลายเดือนก่อน

      Thank you for the video. Opens up some ideas for me to check. My engine has a similar runability problem. Also somebody added a push button start to my mower and still has a key switch also. I keep burning up the button switches. I found a from the starter solenoid going directly to the starter going directly to the starter. There is also a wire from the starter to the button switch. Does that seem right? I feel that is sending current to the button and buring it out. What are your thoughts?

    • @Wrenchesandrods
      @Wrenchesandrods  5 หลายเดือนก่อน

      @@rickpendleton7036I'd wiring a solenoid back up

  • @davidschliebe246
    @davidschliebe246 5 หลายเดือนก่อน +2

    Great job!!! I think I'm chasing one of these issues.

  • @markchidester6239
    @markchidester6239 7 หลายเดือนก่อน +2

    With the wire hooked up to the coils and the plug unplugged, should there be continuity from the terminal on the coil to ground?
    Great video!
    I learned my new thing for the day. Lets go for another.

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน

      With a bad diode, yes. With a good diode no

  • @briancampbell4725
    @briancampbell4725 3 หลายเดือนก่อน +1

    I have the same problem ( I think) 1 pursuing firing however exhaust coming out the intake AND the mower deck appears to run backwards when I engage the deck clutch!

  • @StevenBuelteman
    @StevenBuelteman ปีที่แล้ว +3

    Thanks, good trouble shoot

  • @googleuser868
    @googleuser868 3 หลายเดือนก่อน +1

    Got a 100 series John Deere with a twin cylinder engine that looks a lot like this. Google got me here as I have a similar issue No spark on one cylinder. The mice have been nesting under the cover and I suspect a wiring problem. Always like to get a heads up with a TH-cam video if I can find one before I tear into an unfamiliar engine. Good video to get me informed on what's under the cover. Wasn't aware diodes could be a potential problem. Guessing mine has mouse bite issues. LoL
    Thanks for the info.

    • @Wrenchesandrods
      @Wrenchesandrods  3 หลายเดือนก่อน +1

      @googleuser868 check your kill wires. If they are chewed, they will ground on the engine and kill your spark

    • @googleuser868
      @googleuser868 3 หลายเดือนก่อน +1

      @@Wrenchesandrods Will do. Hoping it's something real easy like that.

    • @googleuser868
      @googleuser868 3 หลายเดือนก่อน +1

      Exactly the same harness was chewed up. 5 inches of bare wire on one wire 2 inches on another. Electrical tape temporarily insulating wires until I get a new harness.

    • @Wrenchesandrods
      @Wrenchesandrods  3 หลายเดือนก่อน

      @googleuser868 I rarely replace the harness. I'll replace wire and heat shrink it

    • @googleuser868
      @googleuser868 3 หลายเดือนก่อน +1

      @@Wrenchesandrods Probably save a few bucks that way. Thought about using a metal fuel or brake line for conduit to mouse proof it. LoL
      Maybe foil tape.

  • @GaryBehlmann
    @GaryBehlmann 5 หลายเดือนก่อน +2

    Thank You!

  • @TomDebalsi-y6f
    @TomDebalsi-y6f 8 วันที่ผ่านมา +1

    It is the yellow wire running from the regulator, connecting to the black wire through a diode. The black wire is frayed and obviously became disconnected from wear. I don't know where to reconnect it. It could be in the harness but I don't see any broken wires in there.

    • @Wrenchesandrods
      @Wrenchesandrods  5 วันที่ผ่านมา

      @@TomDebalsi-y6f the yellow wires should got to the alternator/stator

  • @philliphall5198
    @philliphall5198 9 หลายเดือนก่อน +3

    How about the size of the diode ???
    Don’t want to buy the wire harness 😊
    Thanks for sharing and any part information possible

    • @Wrenchesandrods
      @Wrenchesandrods  9 หลายเดือนก่อน +4

      amzn.to/3Pe853v Here is an Amazon link to the whole wire.

    • @markchidester6239
      @markchidester6239 7 หลายเดือนก่อน +2

      $12 for two of them makes it worth ordering just to have it on hand.

    • @philliphall5198
      @philliphall5198 7 หลายเดือนก่อน +1

      @@markchidester6239I agree and did that and in a week used one
      Thanks

  • @TGMForum
    @TGMForum 6 หลายเดือนก่อน +2

    Nice job. 👍👍

  • @brucer1220
    @brucer1220 9 หลายเดือนก่อน +1

    Like the video and process... haven't seen this issue yet... wondering would it be a good way to test kill wires and diodes to unplug both wires, crank it up? To shut it back off after simply crimp the fuel line to shut down?

    • @Wrenchesandrods
      @Wrenchesandrods  9 หลายเดือนก่อน +3

      I don't think so. When the diode goes bad, it allows current in both directions, which makes it spark out of time. It's still sparking, but it's just at the wrong time.

  • @bugayd3695
    @bugayd3695 7 หลายเดือนก่อน +6

    What you are measuring is Forward and Reverse resistance in Ohms, not voltage, The voltage from the meter provides bias to either forward or reverse the diode junction (depending on the polarity of the meter probes) providing the two resistance readings. That's probably more info than anyone wants to know, but I'm too anal to have let it go. Good diagnostic video otherwise!

  • @bobbybrown8926
    @bobbybrown8926 8 หลายเดือนก่อน +2

    nice video and test. keep it up.

    • @Wrenchesandrods
      @Wrenchesandrods  8 หลายเดือนก่อน

      Thank you! I really appreciate comments like this!

  • @naldorg9581
    @naldorg9581 6 หลายเดือนก่อน +2

    First thing to check if the plug is wet is to check for sparks

  • @dwmcever
    @dwmcever 4 หลายเดือนก่อน +1

    Deleted my diodes.. Engine runs great. takes 15 seconds to shut down after I turn key off. Not charging when running so I keep a small solar panel attached to the battery when it's not running.

  • @wcjcnc
    @wcjcnc หลายเดือนก่อน +1

    I bought a pack of 125 of those diodes for $8.00 online. Been using them for years.

  • @wilki61
    @wilki61 6 หลายเดือนก่อน +2

    Awesome👍

  • @jasonfollick-xx2ew
    @jasonfollick-xx2ew ปีที่แล้ว +3

    Damn that black tool box looks familiar!!! 🤣🤣🤣🤣🤣🤣

    • @Wrenchesandrods
      @Wrenchesandrods  ปีที่แล้ว

      Hell yeah it does! I'd rather him be using it still though!

  • @DonCatherman
    @DonCatherman 5 หลายเดือนก่อน +2

    Im gunna bet this is whats going on with mine...one plug fouls out ..iv changed coils around,cleaned card..no difference..im gunna check this..il bet thats the fix...😎👍💯..i will subscribe..good information...

  • @L46C3
    @L46C3 6 หลายเดือนก่อน +2

    I have a question? If a 24HP Intel only has one coil (and it's bad) how can one cylinder have spark and the other doesn't?

    • @Wrenchesandrods
      @Wrenchesandrods  6 หลายเดือนก่อน

      I've never seen a 24hp intek with only one cylinder to my knowledge

    • @L46C3
      @L46C3 6 หลายเดือนก่อน +2

      @@Wrenchesandrods oh my goodness, thank you for responding so fast. No, you are correct. It has two cylinders. Does it have two coils or one? I’m having the same issue as the title of your video
      Another video showed one coil, two cylinders with one misfiring cylinder
      I can see two coils in your video at the 15 minute mark overhead view of your engine. Mine must have two coils so I could swap them from one side to another to see if it makes a difference. Once I do this I'll investigate the diodes. Already took carb apart and cleaned it.
      Thank you. Thumbs up!

    • @Wrenchesandrods
      @Wrenchesandrods  6 หลายเดือนก่อน +1

      @user-ik4fd9ny4b pull the kill wires off of your coils and see if the spark returns. If it does, you might have a bare spot on one of your kill wires that is grounding to the block, or one of the diodes is bad.

    • @L46C3
      @L46C3 6 หลายเดือนก่อน +1

      @@Wrenchesandrods I did have a bare spot.. MiCE! Also, the coil was nearly touching the wheel, maybe 3 or 4 thousands. Could/would that interfere or stop sparking?

    • @Wrenchesandrods
      @Wrenchesandrods  6 หลายเดือนก่อน +1

      @@L46C3 use a business card to gape the coil to the magnetic and you should be set!

  • @LSCentral5328
    @LSCentral5328 2 วันที่ผ่านมา +1

    If the diodes are bad it can still have spark on both cylinders?

    • @Wrenchesandrods
      @Wrenchesandrods  16 ชั่วโมงที่ผ่านมา

      @@LSCentral5328 yes the will spark at the same time making one of the spark at the wrong time.

  • @scotlippencott1739
    @scotlippencott1739 7 หลายเดือนก่อน +2

    I don't have a spare mower lying around, any idea where I might get that wire with the diodes?

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน

      Amazon

    • @philliphall5198
      @philliphall5198 5 หลายเดือนก่อน +2

      Most repair shops keep them in stock 😊😊😊

  • @UQRXD
    @UQRXD 4 หลายเดือนก่อน +1

    Built to fail. Not like the old days of a briggs engine. Good work!

  • @tomdebalsi
    @tomdebalsi 13 วันที่ผ่านมา +1

    My engine is running fine. There is a red wire and a yellow wire running from the regulator. The red powers the auxiliary light, the yellow went through a diode to a black wire that became disconnected and is loose. The lights no longer work so I assume this black wire is the reason. Can someone help me identify where the black wire is supposed to connect?

    • @Wrenchesandrods
      @Wrenchesandrods  11 วันที่ผ่านมา

      If it’s the black wire running to the coils it will go from the coils to the harness

  • @DonCatherman
    @DonCatherman 5 หลายเดือนก่อน +2

    Your at over 1,300 subs now, great...this video did it..great finding the issue..il bet everyone having this issue subbed like i did...😎👍💯

    • @Wrenchesandrods
      @Wrenchesandrods  5 หลายเดือนก่อน +1

      Thanks!

    • @DonCatherman
      @DonCatherman 5 หลายเดือนก่อน

      @@Wrenchesandrods you bet...😎👍💯👋

  • @2004DodgeRam
    @2004DodgeRam 7 หลายเดือนก่อน +2

    For me both cylinders are firing but the “driver side” one isn’t firing as much as the other side and i can’t figure out why for the life of me, i’ve tried everything i can think off and it doesn’t seem to want to work properly, both fire but one is not firing as much

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน +1

      Pull your kill wire off the weak coil and see if the spark improves. If it does, you kill wire is grounding to the block somewhere.

    • @Mike-su8si
      @Mike-su8si 6 หลายเดือนก่อน +2

      It could be a to tight valve

  • @Mike-su8si
    @Mike-su8si 6 หลายเดือนก่อน +1

    Mines the same engine except for the air filter cover is different mine doesn't screw on it has the yellow piece you undo mine is 40h777

  • @philliphall5198
    @philliphall5198 7 หลายเดือนก่อน +4

    When I see a new coil on that cylinder I AllWAYS pull the kill wire to check dio on b/s twin

  • @bobmeiners448
    @bobmeiners448 7 หลายเดือนก่อน +2

    Perfect

  • @vanguy9780
    @vanguy9780 7 หลายเดือนก่อน +1

    Where did you get that fancy compression tester?

    • @Wrenchesandrods
      @Wrenchesandrods  7 หลายเดือนก่อน +3

      My mom made it! It took about 9 months!

    • @philliphall5198
      @philliphall5198 5 หลายเดือนก่อน +2

      @@Wrenchesandrodslolol 😮

  • @philliphall5198
    @philliphall5198 5 หลายเดือนก่อน +2

    It’s just a one way valve is all
    Simple as that 😮

  • @kennethmaas6473
    @kennethmaas6473 8 หลายเดือนก่อน +2

    Good vedios

  • @pspmaster510
    @pspmaster510 หลายเดือนก่อน +1

    Mine had a blown rod 😅.

    • @Wrenchesandrods
      @Wrenchesandrods  14 วันที่ผ่านมา

      It happens a lot. Did you run it a little low on oil.

    • @pspmaster510
      @pspmaster510 14 วันที่ผ่านมา +1

      @Wrenchesandrods I'm not the original owner, and my dad had this mower sitting around for 5+ years. I think the oil has been barely changed or not at all. It also doesn't have an oil filter. I think small metal shaving had gotten in between the connecting rod and crank shaft, causing increased friction and heat. The cylinder is fine, so I'll rebuild it. I need to clean off the welded aluminum on the crankshaft and polish it. Other than that, it really only needs a new rod and piston.

  • @denniswetzler2024
    @denniswetzler2024 8 หลายเดือนก่อน +2

    Could I just run the engine without the coil safety ground wire? Theoretically of course

    • @Wrenchesandrods
      @Wrenchesandrods  8 หลายเดือนก่อน +1

      Yes, but you won't be able to shut it off

    • @Mike-su8si
      @Mike-su8si 6 หลายเดือนก่อน +1

      Sure just starve it of gas and it'll shut off or choke the air breather or leave your kill wire plugged to the coil and unplug it from the harness let it dangle touch it to any metal to shut the mower off

    • @philliphall5198
      @philliphall5198 5 หลายเดือนก่อน +2

      I know one man who ran a wire just to kill it until I told him what was wrong and I had the part 😊

  • @timmythepilot
    @timmythepilot 11 หลายเดือนก่อน +7

    MY daddy would have whipped my butt if I didn't clean that engine off when I was done fix'n it...All that dirt on them cylinder heads can cause overheating and bad things can happen to that sweet old engine....Great diagnosis though,,!!!!👍

    • @Wrenchesandrods
      @Wrenchesandrods  11 หลายเดือนก่อน +3

      Everything gets a bath before it goes back home to the customer.

    • @timmythepilot
      @timmythepilot 11 หลายเดือนก่อน

      I can see your dedication and common sense. World needs more mechanics like you, have any experience working on Boeing 777's. LoL

    • @Wrenchesandrods
      @Wrenchesandrods  11 หลายเดือนก่อน

      @@timmythepilot negative 🤣🤣🤣🤣

    • @Mike-su8si
      @Mike-su8si 6 หลายเดือนก่อน

      Mine tells me to get rid of some of my mowers i have but then always get more for free and buy a few more

  • @philliphall5198
    @philliphall5198 หลายเดือนก่อน +1

    It’s just a one way valve folks 😢