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 Craftsman GT3000 "MUTT"

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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Sun Jun 10, 2018 7:05 pm

Got some carb clean and a pair of valve stems for the right Exec. Now to get off my arse and use them lol! i cant wait to have a reliable machine again.
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Sun Jun 10, 2018 9:18 pm

Put a welch plug in, there wasnt one before


Made a new choke linkage. This older carb is a bit different than a typical 3 screw, a bit smaller i think, and the port you'd drill for an external fuel pump isn't there. The old linkage was a bit long and made the arm go too far. It was usable but i didnt like it.



Well cleaning the carb didnt help. She ran for a bit then died out. Pulled her over a bit more and nothing happened so i pulled the plugs. Bottom cylinder was wet and the top was dry. She still has spark on both plugs when i pull them out. I think I'll try switching them, and if that doesn't change anything I'll try a different coil.
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 1:04 am

Put the coil on off the old 20hp. She seems to run great now. Got my fingers crossed, throwing her back together now lol
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 6:39 pm

The coil and carb cleaning have definitely helped, but I've come the conclusion that the combination of the snorkel and the new exhaust effects the mixture too much to fix it with an idle adjustment. Went back to the old air box. I'll have to figure out something else for a snorkel. Snorkel wasnt really necessary anyways, i should worry about waterproofing the ignition first.
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biggasmowers
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 8:03 pm

Yeah, my snorkel was also too restrictive until I messed with the jet. Even then it ran pretty lean
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 8:28 pm

My problem is with it running fat. The snorkel acted like a choke, you can smell it in the exhaust.

Oh, and she's still not running right. Tries stalling when i step on the gas. Gonna try taking the exhaust extension off tomorrow...maybe that's it

Actually i mean it ran alright for like an hour but then it seems like it leaned out, the idle speed came up a lot, and it tried to die if i was too quick with the throttle.

But anyways, a pic of her out and about...

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MightyRaze
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 9:21 pm

On your snorkle...  this is how it still looked?



Did you happen to drill out the hole for the bowl vent into the center chamber of your adapter?  You might be getting some kind of vacuum issue.


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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 9:30 pm

I milled out a spot there on the adapter and filed a little slot in the lip on the carb. I know that wasnt the problem. I think I'll check the intake bolts/gaskets too
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biggasmowers
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 11:23 pm

Maybe a bigger snorkel intake size? It is kinda small
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 11:45 pm

That would probably solve it, if it ever even was the issue. I just dont know with this thing. Never had one fight me so bad before...
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MightyRaze
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PostSubject: Re: Craftsman GT3000 "MUTT"   Mon Jun 11, 2018 11:52 pm

Excellent... Thought I would ask. Smile

_______________________________________________

1982 Murray GT. . . . . . . . . . . . . . . . . . 2-39002 . . . [2018 Entry]
Progress:  ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
           0              |              50             |             100

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SebastianAlbrecht
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PostSubject: Re: Craftsman GT3000 "MUTT"   Tue Jun 12, 2018 3:56 am

That sucks, but i think you can solve it. Lucky you have enough spare oppys
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Sun Jun 17, 2018 8:11 pm

I've tried so much with this, it's hard to update...

So I put a stock air box back on. It's still doing the same thing. Took the exhaust extension off. Still doing the same thing. I'm gonna try putting the other carb back on and then we'll see if it'll even run with that.

I want to die a lot more than usual today

Feel free to suggest more stuff that I've already done so I can try it a third or fourth time and confirm it doesn't help
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prancstaman
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PostSubject: Re: Craftsman GT3000 "MUTT"   Yesterday at 11:37 pm

Maybe take the air cleaner back off and look down the barrel of the carb (from a safe distance and with goggles on) while it is running, to see the main jet and idle jet working. Maybe you would be able to see how the extra gas is getting in the engine.
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Today at 12:42 am

I guess I'll try that. I'm not sure what it would show.
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