hating huashengs highly!!!

Discussion in '4-Stroke Engines' started by HeadSmess, Oct 19, 2010.

  1. HeadSmess

    HeadSmess Well-Known Member

    i hate having to do this...

    i have been beaten. beaten!

    ok, way back... i recieved the huasheng whatever it is 50.

    fitted it all up nice with acentrifugal clutch, chain drive, freewheeling sprocket, blah blah. lots of machining :D better than the abortion that was already fitted to it...

    was lovely! nice quiet four stroke grunt, able to pull from idle up any hill :D and accelerate... got the reduction just right ;)

    so, yes, sounds great, huh?

    thats what i thought...then! arrrrrgh!

    riding to a friends one day,(a good 700km of use) it just up and died.

    bit of fiddling, nothing seemingly wrong.
    started with the choke on. ran...badly. died as soon as i tried letting choke off.

    ah huh! a blocked main jet! so i get home finally, strip the carb.

    nothing. and still the same. runs like $#^%

    really strip carb. replace the two little o-rings, cleared the idle orifices with a nylon bristle, everything out with compressed air. soak in some nasty solvent ive got that will clean any residue off...

    reassemble. still no good.

    made manifold, replaced carbie with one off of a c50... nothing.

    changed plug for fourth time.


    replaced hi tension lead. nothing.

    pulled head, ground valves, reset clearances, checked ignition timing.


    full compression.spark.fuel.timing correct, both ignition and valve. nothing doing what it shouldnt...except run!

    so now...

    its sat outside for the past 5 months :)

    i have never. ever. ever. had an engine die for what is apparently no reason at all. killed a lot, yes, but theyre different... this is new,(was) and stock standard!

    the only thing i can think of, that i cant change...easily anyway, is the coil..

    so what? what is it? any suggestions?

    (i really hope someone asks if i turned the fuel on :lol: )

  2. KilroyCD

    KilroyCD Active Member

    I had a similar thing happen to me, where it would only run (and badly at that) with the choke on. Turns out it was a bad float in the carb. A new float took care of the problem, and it has been running great since.
  3. RdKryton

    RdKryton Active Member

    Are you getting good flow from the tank? It happened to me. The little strainer on the inside of the tank at the petcock was the problem. I would get fuel but not enough to run.

    Last edited: Oct 19, 2010
  4. Poor little engine

    I did read, somewhere, that a guy had a sick running HS142F (the only other one I have heard of). His flywheel had slipped, changing the ignition timing, and making the engine run sick.

  5. skyl4rk

    skyl4rk Guest

    I have a HS with the same problem, it just happened one day. I haven't had time to go through the list of things that could be wrong yet. I'm thinking about getting a Briggs and doing some frame hacking to make it fit. Or maybe just buying a new HS.
  6. HeadSmess

    HeadSmess Well-Known Member

    im 99% certain the timing is right, but to pull the flywheel right off and check the key, if any?

    i didnt do that!


    ok...am i motivated enough to go look at it right now?

    ive been meaning to strip it down lately.... hmmmmmmm. cant make it any worse....

    aye. cheers :D

    regards fuelling issues. nope. always had a full bowl, etc...
    Last edited: Oct 20, 2010
  7. unior

    unior Member

    Question: Is it popping and backfiring?

    If so...plastic cam gear is @$^@#$@#.

    Happened to me. Mine is now in a billion pieces and sitting in a cardboard box.
  8. skyl4rk

    skyl4rk Guest

    That could be the problem with mine. It started backfiring and seemed like the exhaust valve stayed open sometimes while I was riding it
  9. unior

    unior Member

    The cam gear is fun to get to. You have to completely dissasemble both sides of the bottom end.
  10. skyl4rk

    skyl4rk Guest

  11. HeadSmess

    HeadSmess Well-Known Member

    no you dont. output shaft side only, about 6 bolts, off comes the cover, theres the plastic cam/gear.

    very clever using only one cam, except it prevents you making too many mods to the cam profile...

    anyways. i got it in pieces. ive MADE engines, and i still cant see anything apparently wrong.... im not letting this thing beat me!

    i guess its 8 AM so i might spend the day putting it back together again now...

    i still have that sneaking suspicion its the coil. maybe i should try one off of the chainsaw or something... i havent yet cus id have to machine it to the same radius as the HS flywheel....lazy :)
  12. unior

    unior Member

  13. abikerider

    abikerider Member

    That would be me and what happened was that the cheap metal in the shaft key sheared letting the flywheel rotate enough to change the ignition timing.

    So did you check that yet? It's pretty easy if you have a puller. I used a steering wheel puller to get the flywheel off.
  14. unior

    unior Member

    Anyone need a huasheng f142? I've got one running.
  15. RdKryton

    RdKryton Active Member

    How much?

    I may move this to it's own thread in the buy sell trade forum.
  16. unior

    unior Member

    i dunno what its worth it has a busted gas tank bracket and currently only runs with the choke on.
  17. engine

    HI is it the one with the clutch on board, or the keyed shaft sticking out, and how much for it?

  18. HeadSmess

    HeadSmess Well-Known Member

    i had slight problems with the dissappearance of my puller.
    which having just found again...

    now the trick is to find some suitable bolts as well, lol.

    i shall update tomozza :)
  19. HeadSmess

    HeadSmess Well-Known Member

    completely stripped and cleaned, oiled, awaiting gasket goo now.

    the key was fine, that flywheel sure was on tight...

    rings fine, some discoloration on the xhaust valve seat, nothing dramatic.

    i stand by my decision that it has to be the coil....
  20. HeadSmess

    HeadSmess Well-Known Member

    wellllll.... its just outside my door, running again...

    so... i dont know!!!!!!! >stupid<

    wont run with choke right off. or on. halfway, with the lever pointing straight back is fine... revs out if i open throttle, then slowly open choke to 1/4 from fully off. dies when i back of.

    everything says its the carb.... yet a completely different one was no worse? or better?

    sigh...do i really have to drill the jet? i dont wanna!
    spose i have to... i do miss the 4 stroker... :rolleyes: