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50 thoughts on “1972 honda 125 cold start fail

  1. compression ratio was probably very high as well, could maybe have milled the piston flat on the top or at least gone down that 10 thous on it and I bet it would run fine for a quite a while.

  2. It's always fascinating to me how many people do NOT know the difference between "lose" or "losing" vs. "loose" or "loosing". Just read the comments in this video alone – hilarious!

  3. I am 80 old, always been a mechanic, which you are top of the line, NOT A PARTS CHANGER, I am getting to old to do alot and I love watching you do it for me–LOL. A mechanic knows there is a problem and without experience or details he is fore known that he will fix it somehow. By the Grace of God this is his gift and he will perform it. Thanks for all the great videos.

  4. Sorry for the new comment on an old episode…but…
    First…thank you for the amazing videos…they’re great for the DIY wannabes like me who just need to see someone else walk through the troubleshooting process learn a few diagnostic process. On the shifter issue, THAT was the thing you heard “drop” in the previous video when you was replacing the block half. You pause and looked for something that fell out…but it was that rod that dropped out of it’s seat and made a little tapping noise. Always fun to watch and learn and join in the little victories.

  5. Rob folks from holland is correct , the domed aftermarket piston has arrow on top that points to exhaust vavle – more comp but it hits head/inlet valve grind head of piston top is correct thing to fix extra base gasket means u may get away with lower octane gas but your loosing " squish " which favours pre-ignition so may not (get away with lower Octane gas ).😊 Trev NZ cheers. Keep up interesting videos .

  6. 20:04. Rocking it back and forth I was reminded of a time I did a cam swap on my 96 Mustang GT. I was just about buttoned up and was turning it through to double check timing when it LOCKED up. OMG I knew I’d ruined it. I panicked for a while, got on the forums for a while, and that was when I remembered it was still in gear with the brakes set.

  7. I would have just relieved the top of the piston with a dremel and those bits they use to port and polish intake tubes with. Stacking gaskets, nah, potential source of leaks.

  8. Hello!, Did not watch rest of video yet, But I would not double stack gaskets, I would remove piston and it should be thick enough to mill off top or put in lathe and maybe take of .050-060 thousands, You can also take a 1 inch end mill and recess the valve section of piston.

  9. i just bought a 79 model and the top is is take apart with the engine in a bag any tips or things i should know would be appreciated i am a beginner

  10. A lady I knew as a kid gave me my first mower it was a reo type lawnmower made with a Clinton engine it was seized and I think I was about 7 or 8 but that's how I got started

  11. My heart sank when i heard her knocking, all that work,i felt so sorry for you, but you kicked back and your determination you succeeded and through learning by our mistakes,WE ALL MAKE THEM, we are only human. I watch your videos because of the learning curve and the thrill of seeing your sweat and tears come to life. so if those out there have negative comments,make your own videos and , we can watch your "professionalism" ,and perfection in action ,NOT. Keep up the good work buddy , Take care for now .Mac.

  12. I just bought a 1974 honda xl125 and rebuilt the whole motor in my college apt bc i found gear teeth in my oil filter but it ran first try after reassembly after some carb tuning and your videos helped allot, keep up the good work.

  13. Reminds me of the time I rebuilt an old IHC engine and was given wrong pistons, had cam bearings inserted improperly and had a blocked oil passage and had missing parts in a head rebuild. It was my only transport at the time. Sometimes good shops go bad over time and do really bad work.

  14. I love the way you skipped over the whole “its all gotta come apart again to get this bolt in there” thing…If you didn’t edit out a blue streak then you definitely earned yourself a halo for the day.

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