Working on a Yamaha for a Good Friend

[Getter-Done]

Originally Posted by Go4snypr

Get the year of the cart. If it is an 82, then compression is good. If its anything other than an 82, then 80psi compression is no good. In 1982 they went to a low comression engine for some reason, then went back. You want 110 to 120psi in any other year.

I will check the year .
Thanks.





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[Getter-Done]

Originally Posted by CP241

If it’s already got a China carb you may be stuck. Hope you’re patient… about the only option I could offer is buy one from Amazon. Then keep exchanging it as defective until you get one that works. Amazon will return anything… you could try and call plowmans and see if he has anything he recommends or if he stocks a carb for it. I know he still rebuilds motors for those, But with a cart that old it’s a long shot…

Thanks
I am waiting on a response from my friend .
Thanks to ya'll .
I have more good info to present him.

The Amazon deal is very smart . Thanks

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[Getter-Done]

Originally Posted by Go4snypr

Get the year of the cart. If it is an 82, then compression is good. If its anything other than an 82, then 80psi compression is no good. In 1982 they went to a low comression engine for some reason, then went back. You want 110 to 120psi in any other year.

Thanks for the Info.
It is an 82.


Here si a link that I found the year.

Link:
.https://www.petesgolfcarts.com/how-t...aha-golf-cart/








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[Getter-Done]

Why did someone Zip tie this Open?


gc18 (2).jpg

gc19.jpg

gc20.jpg

I will give more updates about new carb also.



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[Getter-Done]

Update:
I got a carb from a-mazon.

Link: https://www.amazon.com/dp/B075RZF1TG...roduct_details
It's not running perfect ,
But it is definitely better.
I can cruise slow and run wide open.

The only difference,
Now it sputters at wide open and above idle.
Also small backfire once in awhile.
It would not sputter wide open with the old carb
But wide open is all the old carb would run at

I changed the oil in the oil tank with fresh oil.
It was very thick and smelled worst than the new oil.

I drained the gas tank and filled with fresh non-ethonal gas.
I poured the gas in a clear 5 Gallon glass jug
It was real (Orange)

I poured this in my old tractor
It will run on anything.

The sputter then got a little bit better.
I am trying to do one thing at a time so I can tell the differences.

Now I ordered a new spark plug,
It will be here tommorrow, so that is my next step.

Should I replace the ignition coil?

I am not one to just throw parts at a problem.
Because sometimes the one that's on it is better than the one you buy.

Thanks for everyone's help.







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[CP241]

I would really recommend pre-mixing the oil and fuel. Oil pumps go bad in one of two ways, either stuck wide open (too much oil) or closed (no oil, seized engine).

Use a good quality oil. I like amsoil or klotz. I like the way klotz smells

Like you said, start simple. Ditching the oil pump is the very first thing I do on any 2 stroke I own.

[Getter-Done]

Originally Posted by CP241

I would really recommend pre-mixing the oil and fuel. Oil pumps go bad in one of two ways, either stuck wide open (too much oil) or closed (no oil, seized engine).

Use a good quality oil. I like amsoil or klotz. I like the way klotz smells

Like you said, start simple. Ditching the oil pump is the very first thing I do on any 2 stroke I own.

Thanks for that input.
I was thinking about this very thing.
Is the oil still mixing correctly??

So just a little more insite into ( My ) deal with this project.

I am trying to fix this for a friend.

They are going sell it afterwards to someone I know.

So if it were mine, I would probably premix the gas as you suggested.

Are these oil pumps still available?

If so , Do they work correctly.?

I will suggest this to the new owner

I seen klotz at our wally world. Thanks



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[Getter-Done]

Put new spark plug in.
Not much change in low speed .
But it does not backfire wide open now.
Found a loose wire on the coil.
I put a new terminal on it.

It still stutters and lightly backfires at low speed.

Sometimes it starts quicker in Reverse than forward?

I am still driving it around to run some of the gremlins out









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[Getter-Done]

I am still trying to get this cart going

I returned the amazon carb.

I am going to try another one?

My Question is :

Do the Reed valves have gaps in them when you pull them out?

Or should they be closed (Shut) tight.?



reed1.jpg

reed2.jpg

reed3.jpg



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[Getter-Done]

I am still trying to get this cart running

It is getting worse

I am down to 72psi compression.

I put a Carb from Don Plowman on it.

Here is a video of it cranking at 0:24 I changed to reverse .



Link:
https://www.youtube.com/watch?v=qNIOa7EgatU









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