1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Mohashi 12V MCAS980 carburetor

Discussion in 'Suzuki Carry' started by PedroMAXcool, Dec 8, 2024.

  1. PedroMAXcool

    PedroMAXcool New Member

    First post to learn how this service works. I bought a Rusco Suzuki Carry January 2024. Knew nothing about them but always liked this toy. I thought being an automatic I could use it to help my wife learn to drive. Unfortunately, the steering is too heavy for her.
    A couple month ago, It would just not tick over. Thought water got into the gas tank after 4 days of rain. After days of trying to burn off the gas, draining some, I popped off the air filter housing. WTF, there was a bugs (cockroach maybe, ants) inside at the choke flap. I noticed some cover plate also missing and the carb is pretty dirty.
    I removed the Mikuni and decided best to buy a new carb.
    I took the plunge and bought a Mohashi to replace the Mikuni.
    After a few weeks of procrastination and laziness, a lot of study, I got up the motivation to tackle the installation.
    After a few hesitations of starting, the engine is sounding good. Not road tested, yet, as getting round to adjusting the valve lash. Waiting on new feeler guage as the one I had was 0.015" smallest.
    Will post update later and try with some pictures.
    Oh, I did some vacuum bypassing which I could document.
     
    t_g_farrell likes this.
  2. t_g_farrell

    t_g_farrell Well-Known Member

    Interesting. Never heard of that brand over here in the states. A quick google shows it as being available in japan and other asia places.
     
  3. PedroMAXcool

    PedroMAXcool New Member

    Here are 2 YT videos that may be good to watch. The language is Tagalog though you will be able extract the information. I watched these several times before I tackled the installation.
    I bought the carburetor on Lazada which I think is a relative of Alibaba.
    I tired to cheat by connecting what I thought was a minimum amount of ports to get it started. It would struggle with the air Inlet being wet with gasoline. Connecting all the ports, backing off the mixture screw 5 turns, it started and ticked over.
    After some further research, I disconnected the EGR and blocked it's outlet pipe.
    Once I do the valve lash, I should be able to better tune the carburetor.



     
  4. PedroMAXcool

    PedroMAXcool New Member

    One gotcha, kind of funny, after I got the carburetor running and the engine up to temperature, I was bleeding the air out of the thermostat housing. There was a click click click click and the engine shut down.
    It would not start. I'm thinking something happened with the carburetor possibility as the engine was now running at temperature. I left it till the following day so the engine would be cool.
    Next day, on the drivers side, leaning in as no seat, I tried to start. Nope. I tried again and for some reason looked down to my right. There it was. It wasn't the carburetor that was the cause.
    I had installed new HT leads and hadn't properly installed the lead to the coil. It had come loose and the clicking I heard, you can guess.
     
    BigMW likes this.
  5. PedroMAXcool

    PedroMAXcool New Member

    Figured out how to get images to upload. Here are two of the Mikuni and the Mohashi. You can can see how the Mikuni go 'bugged' out.
    Mikuni_Mohashi.jpg
     

    Attached Files:

Share This Page