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CARBURETOR

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RAY

10-02-1998 19:34:12




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I HAVE A 48-N FRONT MOUNT DIST., THAT DOES'NT SEEM TO BE GETTING FUEL IN THE CYLENDERS. I DISASSEMBLED THE MARVEL-SCHEBLER CARB, CLEANED IT,RE-INSTALLED IT, AND STILL GET DRY SPARK PLUGS. THE TRACTOR HAS NOT STARTED IN OVER A YEAR, DUE TO SOME OTHER NOW CORRECTED PROBLEMS. I HAVE EXCELLENT CRISP BLUE SPARK FROM ALL FOUR PLUGS, NEW POINTS ,IGN. WIRES, PLUGS, CONDENSER, COIL, CAP&ROTOR, COMPLETE WIRE HARNESS, BATTERY. I'VE HAD THE DIST. OUT ABOUT NINE TIMES, CHECKING GAPS AND CORRECT GROUNDS, AND ALL SEAMS RIGHT. I'VE HAD SEVERAL KNOWLEDGABLE AUTOMOTIVE MINDS GIVE SEVERAL "DID YOU TRY THIS OR THAT". SOME HELPED OTHERS DID NOT. I HAVE REMOVED THE PLUGS, PUT A SMALL AMOUNT OF GAS IN EACH CYLINDER, AND TRIED TO START IT WITH NO LUCK. I KNOW THERE IS GAS IN THE CARB BECAUSE AFTER I RE-INSTALLED IT, SEVERAL DROPS OF FUEL LEAK OUT THE CHOKE SHAFT AND THE AIR INTAKE HOSE CONNECTION TO THE CARB. I'M THINKING A TOTAL OVERHAUL OF THE CARB, THE "COMPLETE KIT" CARBURETOR RAPAIR KIT FROM "CT FARM&COUNTRY", THAT COST $50.00. OR, A NEW CARB FROM THE SAME OUTFIT FOR $137.00. THEY ALSO LIST A REPLACEMENT, NEW, "ZENITH" CARB, TO REPLACE THE MARVEL-SCHEBLER. IT'S BEEN WAY TO LONG SINCE I HEARD IT RUN. I'M RUNNING OUT OF IDEAS, AND I DO'NT WANT TO THROW MONEY AT IT AND CROSS MY FINGERS. I'M GETTING SPARK. I PUT GAS DIRECTLY INTO THE CYLINDER. I KNOW THE TIMING IS RIGHT. SHE CRANKS AND CRANKS BUT NOT SO MUCH AS A BURP OR A FART. ANYBODY..... .ANYTHING..... .....

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PF

10-06-1998 06:46:03




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
Not to reduce your wallet anymore that you already have. I would suggest the new Zenith carb. After trying the re-build routine I ended up getting one and she started right up! Let us know how you make out.

PF



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Jim

06-05-2000 17:12:38




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 Re: Re: 4-Ring Pistons in reply to Nolan, 06-05-2000 10:40:13  
The N engine is one half of a 100hp flathead v8. These engines used 4 ring pistons from 42 to 53. The 3 ring piston (aftermarket) was used for race engines. Earlier v8s, 85 and 90 hp used a steel three ring piston in the 3 1/16 bore.



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Michael Az.

06-05-2000 15:41:36




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 Re: Black Oil in reply to Alan, 06-05-2000 11:36:36  
When its time to change oil, if it isn't dirty, somethings wrong. Good oil is formulated to suspend dirt and contaminates so it goes out with your oil change. If the oil is clean, the dirty stuff is still in the engine.----- Michael Az



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JP(MI)

10-05-1998 17:31:08




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
Ray,
Have any of the suggestions improved your situation?

If so, great. Happy tractoring!

If not, is it possible you have reinstalled the distributor 180 degrees out of sync? This would fit with your description of great spark but no firing "not so much as a burp or a fart".

Let us know what happens.

John



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Richard Fazio

10-05-1998 06:18:20




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
If you do get a putt out of it with the starting ether its a fuel problem!



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Colin (WI)

05-29-2000 19:07:09




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 Re: Veterans.... in reply to Tom 8N396936, 05-29-2000 07:24:35  
A little late checkin' in here today. First sunny day since Thursday. I spent it outside playin' on my tractors, mowing lawns, powerwashing the deck and getting the pool opened up. Then we had a great cookout with the neighbors over for burgers, hotdogs and ice cream sundaes. Of course, none of this would have been possible without the sacrifices made by our fathers and grandfathers and their wives, mothers, sons and daughters. I haven't forgotten and I made sure this morning that my 8-year-old son understood why there was no school today. Hopefully, he'll never forget either. We remember and we are thankful.

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Don

05-29-2000 18:34:29




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 Re: Re: steering wheel removal in reply to ZANE, 05-29-2000 14:12:11  
While using Zane's method, if it is not working, while you are pulling and moving side to side, get a helper to give the retaining nut a sharp blow with a brass hammer.



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REDDOG

10-04-1998 02:55:00




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
A couple months ago I was trying to fire up my Dads 8N which had sat in the barn for nearly 10 years. After replacing the condenser to get spark I fooled around for about an hour trying to get it to go. Finally I jumped the starter with a 12 volt battery - fired up and ran after about 10 seconds of cranking. Sometimes a little extra cranking speed helps. Reddog



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Darryl (Mo)

05-29-2000 09:14:57




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 Re: What is a Sherman Transmission??? in reply to Doc, 05-29-2000 04:38:56  
Hi Doc, As Jim states, the Sherman is a auxillary trans. that installed ahead of the factory trans. It's output shaft replaces the input shaft of the OEM trans and the unit bolts in onto the 'nose' of the OEM unit. The only visible indication of the Sherman is a sepearate lever to shift the unit (usually on the operator's left), along with the occasional cable-operated Sherman being encountered. The cables used to shift were prone to rusting and binding and weren't/aren't too popular. The general consensus is that the Sherman-equipped N's aren't good tiller tractors because the Sherman slows PTO speed as well as ground speed. There were other aux. units made such as Hupp, Howard, Park, etc. in addition to Sherman. I think the Howard, for one, will slow ground speed and maintain PTO speed but they are rare, break easily, and parts are unavailable. Our N's were state of the art for their time, but just weren't envisioned as being used for some of the modern attachments that didn't exist in their time.

Regards,
Darryl

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John C.

10-03-1998 06:51:57




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  

IF you are getting gas to the Carb, are you able to blow compressed air thru the intake manifold? ...Or is it plugged?
Remove the sparkplugs and blow air into the sparkplug holes.... When the intake valves are open in each cylinder, (never all at four at once) the air should come out the manifold, unless it's plugged with mud daubers or a dead mouse or some such...if the carb was off for any length of time you never know what varmints coulda got in there. You'll have to turn the crank some to open the intake valves in turn in all the cylinders.
DO NOT blow toward the engine thru the intake as you might be blowing crap into the cylinders!
Another thought... have you checked compression? If the valves are stuck open for some reason, it might not have enough draw to pull gas into the cylinders....
Just my thoughts...
Best of luck and please let us know what you find out. John C.

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Bob Gaddis

10-02-1998 20:53:15




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
Please turn off the caplock. It seems like you're shouting,and it's hard to read.
Check your fuel flow to the carb by removing the fuel line. Then reattach the fuel line and open the bowl drain. You might need to check the float level. My guess is, though, that the little jets have gummed up with varnish(old gas crud). Take the carb apart and give it a thorough soaking in carb cleaner or gumout. Blow compressed air through all the little holes. If it seems like there is a hole where air should be going, but it's not, probe with a piece of stiff, fine wire. Mine eventually blew small gummy worm-like threads out of the ports. I bought a gallon can of Gunk carb cleaner with a little metal basket inside the bucket. Soak the carb in that(avoid skin contact) and then give it a good cleaning with kerosene or varsol and blow it out.

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Mike OH

05-29-2000 06:14:38




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 Re: Group picture (try # 2) in reply to Elwood, 05-29-2000 06:03:58  
Nice collection of tractors Elwood. Glad you posted them again. Now if you go off of the side of that building with a lean-to, you just might have enough room for a few more ;>)



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jake

10-02-1998 20:02:37




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 Re: CARBURETOR in reply to RAY, 10-02-1998 19:34:12  
make sure the valve is open. make sure tank is clean



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