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tractor won't run

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Farmboy835

02-23-2008 19:11:45

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I have a 1951 super C I restored it and rebuilted the engine new sleeves bearings pistions. we got everything timed out to what there soppose to be and we got spark and compression we got fuel to the carburator and we got suckion from into the engine from the carb. we had the spark plugs in the right order end we even tried some differnt ones but still nothing. and the valves are all set to the right specs. but it won"t fire we even tired putting some gas in the engine and we tried some starting fluied so it got everything it needs but it still won"t start so if anybody can help were out of ideas.

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Patrick Martin

02-25-2008 20:14:11

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

OOH!

Something comes to mind here with something I did with the wiring.
I somehow wired the darn thing to where I was getting no spark when I put a load on the starter or vice versa.

Have someone check the fire as you turn it over and check to see if the coil stays energized when you let go of the switch.

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Farmboy835

02-25-2008 18:34:40

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

Thanks for your help we got it running we had everything timed and we cleaned the carb up and checked we head compression and we had spark and everything and it sould of ran but it never did and that was 3/4 of the day saturday tiring to figure it out so we gave up and then we went back to work on it sunday and reitmed everything again and cleaned the carb up again and it started up. don"t know why it didn"t start the night before cause we timed it the same way sunday and it started, thanks for your help. one of theses days I"ll put up a before and after pic up

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ihc49er#2

02-24-2008 18:47:01

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

when you get this thing running you should tell us who gave you the right diagnosis. i get a kick out of these situations , one guy says something and six guys reword it.if you have comp.fuel and spark at the right time you will have an explosion.just like the old saying gene gene built a machine,art art blew a fart and blew the whole dam thing apart!

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El Toro

02-24-2008 09:33:21

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

If you have good fire to the plugs and fuel and there's not even a pop from the engine you have the ignition out of time. When you bring No1 piston to TDC on the compression stroke your rotor should be pointing to the No1 plug tower on the cap and both valves on No1 piston should be closed. If you removed the cam and crankshaft gears your punch marks should mesh as shown in this picture. Hal

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ihc49er#2

02-24-2008 08:36:03

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

you didnt say if you had camshaft out, sounds as if timing marks are not in line. i would remove valve cover and turn engine over slowly and watch what valves are doing when #1 is coming on comp. in.& ex. should be closed.its running mate #4 should be on the rock.that is with timing marks on front pulley lined up then rock pulley back and forth about 2"and #4 valves should be rocking also.this is the way to set valve clearances, just watch when the running mate to the cyl.your adj.is on the rock.

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mkirsch

02-24-2008 08:06:33

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Re: tractor won't run in reply to wegman in mn, 02-23-2008 19:11:45

All you can do is try it all again. Get a fresh set of eyes to look at it for you, because you may be skipping over the real problem, thinking "Yeah, I already checked that," when you really didn't, or made a mistake.

Engines don't "not run" for no reason. If the fuel, fire, and air are all hitting at the right time with enough compression, it WILL run. Obviously one of those five factors is missing.

You said you've got air fuel and fire, so the only things left are compression and timing.

It's very easy to be timing against #1 TDC on the exhaust stroke instead of #1 TDC on the compression stroke.

Check the compression of the cylinders too.

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Farmboy835

02-24-2008 07:52:06

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

thanks for your help but I allready did all that and it still won't fire.

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trucker40

02-24-2008 17:44:49

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Re: tractor won't run in reply to Farmboy835, 02-24-2008 07:52:06

Take a wrench,turn motor to Top Dead Center or TDC,take number 1 spark plug out,put a screwdriver in there and turn the motor a little both ways and make sure the piston is all the way up,take distributer cap off,is the bug pointing to number one or just barely past number one?If its pointing to number 4 or just past number 4,and its on the compression stroke on number one,there is your problem.You installed the distributer 180 degrees or halfway out.Easy to do.Best thing is to get somebody to help you a little,2 heads are better than one a lot of times.When its on the compression stroke both valves on that cylinder will be closed.Thats whats wrong usually when I cant get a motor started after having it apart.Lots of other things it could be,but thats the most likely.

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CNKS

02-24-2008 08:37:24

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Re: tractor won't run in reply to Farmboy835, 02-24-2008 07:52:06

If you did all that correctly, then it has to run. I suggest that you start over. Be sure you have #1 (closest to the radiator as mentioned) on the compression stroke, and the timing marks lined up.

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gene bender

02-24-2008 03:46:07

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

You donthave any fire going to the plugs at the rite time. Better take of the cap and see when the pistons are at tdc if the rotor points to the rite wire.

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Yugrotcart

02-23-2008 23:53:10

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

Should also add that #1 is closest to the rad.

Paul

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CNKS

02-23-2008 19:28:51

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Re: tractor won't run in reply to Farmboy835, 02-23-2008 19:11:45

Timing. Set #1 to TDC, then turn the flywheel by hand (screwdriver or have someone turn the crank) until the marks line up. Remove the distributer and set the rotor so that it lines up to #1 in the cap. Reinstall and rotate counterclockwise. remove wire from coil, hold 1/4 inch from screw on dist and rotate distributer clockwise until it sparks. Provided you have good points, coil, and condensor, regardless of what you did, if it does not start, you then have a fuel problem.

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