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Allis Chalmers Discussion Forum
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zenith idol

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jayw

12-13-2004 08:02:10




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hey fellas got the water out and oil is okay, New problem cleaned fuel system real well old CA starts and runs real good for the mess it was left in. but my problem is I cannot get it to idol. it will run hours at high but when i throtle it down it just dies. Maybe a backfire once in a while, but for the most part it just dies out. Thanks for any help




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Uncle B

01-06-2005 22:36:07




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
Sounds like burnig too little air , open your air jet.



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Teddy (punchie)

12-13-2004 19:18:26




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
Idle I think is 1 1/2 to 2 turns out. But I think it need cleaned. Water in Gas. Choke maybe set wrong. Do a good tune-up ; plugs, set points, clean gas lines etc. Clean air cleaner, and breathers.



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DENNY DEPELLO

12-19-2004 15:01:39




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 Re: zenith idol in reply to Teddy (punchie), 12-13-2004 19:18:26  
HI,
I HAVE A ALLIS B ZENITH CARB,
WILLRUN GREAT AT HIGH IDLE, RUN SFOR A SHORT WHILE ON LOW SPEED ,I REPLACED THE FLOAT VALVE NEW GASKET,IT SEEMS TO RUNFOR ABOUT TEN MIN.THEN SHUT DOWN.ANY HELP WOULD BE GREAT,I EVEN RUN A TIP CLEANER IN THE JETS. I AM REALLY STUMPED ON THIS
THANKS,
DENNY



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Teddy (punchie)

12-19-2004 19:25:05




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 Re: zenith idol in reply to DENNY DEPELLO, 12-19-2004 15:01:39  
Hi denny e-mail me: [email protected] :Teddy

Need to check flow from the drain on the bottom of the carb. You should have a good stream not just drips. If you get a good flow from carb e-mail me, something else is wrong. If you get good flow at first than it slows down to a drip is a flow problem. If no good flow, start at sedament(sp) bowl see if you have good flow from that point. Still no flow clean filter in the bowl. Still no flow tank need cleaned, and whole sedament bowl ass.----- ----- -- If you get to this point when put it back together, take a screen (type for screen door is fine) about 1-1/2 X 2-1/2 long make a tube(roll it into a tube) then, fold end back over its self just enough as to block one end, make it stay with some small wire or more screen tied around or feed through like thread. Next take the end that is open over the inlet for the sedament bowl. Make sure this is wired on very well. This will keep most of the rust and or whatever in your tank from plugging or sedament bowl. If this was not the trouble , e-mail me. Teddy

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jayw

12-13-2004 15:30:16




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
yes dick I understand the the adjustment of the carb,also have drawings and owners manual .Idol jet in carb is clean



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Dick L

12-14-2004 12:48:02




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 Re: zenith idol in reply to jayw, 12-13-2004 15:30:16  
Looks like you have it under control. If the idle jet is clear and you have it adjusted correctly there aint much I can help you with. Maybe next time.



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Dick L

12-13-2004 13:03:50




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
The first question that comes to mind is do you how to go about adjusting the idle? I have one or two fellow stop in every year that have an idle problem and do not understand how to do the adjustments. I start up a tractor and let them play with the adjustments.



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Steve in N.J.

12-13-2004 11:41:27




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
Idle circuit is plugged probably with rust, dirt or gum. A good soaking, & a glassbeading is in order there. We have rebuilding services if interested. Also have carb kits in stock if you wish to do it yourself. Check the emulsion tube for crud build-up, and also a high float level can give you those symptoms. Usually black smoke will show if float level is high. No black smoke- idle circuit troubles.
Steve/B&B Custom Circuits

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old

12-13-2004 11:08:25




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 Re: zenith idol in reply to jayw, 12-13-2004 08:02:10  
Sounds like it needs to have the carb cleaned out real well/rebuilt



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