93 DS has a very bad cold!

[DDavis6384]

My cart is sick! It whines, coughs and sneezes and just won't go. I ran it very low on gas, and it started stalling, then backfiring and coughing, then it will start and run a few yards then quit again.

One thought was maybe there is moisture in the gas. I am going to try some HEET in the tank and see if that will help. But is there anything else I can look at?

Oh, by the way, my cart is like one on another post. It wants to run backwards when you get out of it. I thought maybe the carb may need some adjustment. I've heard that the butterfly thingy inside may not be closing completely and this will allow fuel to enter and spark in the hot engine.

Any help on either of these issues would be great!


Thanks,
Doug

 

[HotRodCarts]

Welcome to Cartaholics.

If the cart was running ok before it ran out of gas you should pull the carb and fuel pump qnd clean them. It would be a good time to change the fuel filters.

 

[DDavis6384]

Other than the backing up on you when you get out, it ran OK. I did seem a bit underpowered, however. I have been screwing around with the accelerator linkage and the throttle cable, and figured that to be part of the problem.

But, since the fuel was almost gone, I thought that something like dirt, water, or something must have gotten to the carb.

Thanks, I will work on it tonight, and see if I can't clean it up!

Doug

 

[DDavis6384]

OK, so I've cleaned the carb and fuel pump, replaced fuel filters and gas lines. It is virtually impossible to make fine tuning adjustments to the butterfly because the shaft seems VERY loose! There is NO adjustment to get it to just sit in a closed position when relaxed. It wants to always be slightly open.

I still get the no spark for a while, then a backfire. If it does fire up, it runs kinda choppy.

My next guess is the ignitor? What do you think? Could it be failing, allowing gas to build up in the cylinder, then when it does fire, it explodes all the excess fuel built up. Once that excess is gone from the cylinder, then the spark plug can fire and the engine runs normally?

This is all a big question, as I really have no idea what I am talking about, just posing ideas that come to me as to why the cart is acting this way!

Thanks for any additional insight you may have!

Doug

 

[DDavis6384]

Help! I have done everything I can think of and am my wits end. The problems are the quiting and backfiring. It won't stop.

In my efforts to fix things, I have been adjusting the throttle linkage. Now the throttle, which I can not adjust to trigger at 1" has enough slop in the black box that when I get the accelerator to start the cart at 1 ", it won's shut off when the accelerator is released. So I am stuck with the cart starting when the pedal is depressed about 3-4".

I also have adjusted the cable. Now there is no slow. I just press far enough to start the cart, and it will accelerate to full speed, hit the rev limiter, and stop. Then restart and go to max speed again. I have no "accelerator" just a GO pedal!

Of course, this all is when the cart starts and runs, but it still will quit, backfire, and restart (usuallly after the starter has run for some time).

I am reallly counting on someone with some knowledge helping me to understand what is happening! See all my posts, nothing has changed!

Thanks

Doug

 

[DDavis6384]

I am still waiting on a new carb I ordered, but I have messed around with other things, and now am wondering:

Does anyone have a step-by-step procedure for diagnosing electrical problems? My 92 gas DS is not currently producing a spark, and all the forum discussion makes me wonder just what is happening. There are so many things!

Would appreciate the help!

Thanks,

Doug

 

[DDavis6384]

Oops, never mind. Just found it in the resources area.

 

[DDavis6384]

OK, now I have replaced the carb, and I think I found a wire to the ignitor disconnected.

I have put it all back together and still have the no start, backfire, run scenerio. Any other helpful suggestions?

See my earlier posts for complete descriptions of the problem.


Doug

 

[DDavis6384]

I have now a cart that runs! I have replaced the igniter with a John Deere M70114 I found on Ebay for $25.

The backfire, stalling out issues appear to be gone.


Thanks for all the help and advise I have received on this problem.


Doug

 

[dirtysouth]

 

[HotRodCarts]

Glad you got it fixed and thanks fopr the follow up.