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Tractor no start!!

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Bill Jolley

12-07-2000 12:23:49




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Hi list, Tryed all sujections but wont start! I did find out why I was getting spark from the coil to the distrobuter cap but not the plugs. It seems if you are way out of time, it will pervent you from getting any fire to the plugs. I got new points, condenser, plugs-cham.d21s, disterbuter cap, roter, and wires. I just rebuilt the moter and put a new carberater kit in.STEAL WILL NOT START!!!!!BIll

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Gene Hefty

12-08-2000 20:14:42




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Bill you probably have got it started by now,with all the good suggestion that you have gotten.If you are sure that you have spark,the timing is right,it is getting gas, the valves are set right you might want to try this.Take out the spark plugs and put a few spirts of motor oil into each cylinder then turn the engine over a few times before putting the plugs back in.This will help seal the compression rings if the cylinder walls are to dry.This has worked for me on new overhauls.Best of luck. Gene Hefty

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Jim Parisot

12-08-2000 17:01:01




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Bill, this may be just too simple, but it sounds to me that you have your plug wires crossed. Not yours, but your tractor's. If it will spit and sputter and backfire you've got spark and fuel, make sure your wires follow the firing order. Maybe you think you have the order right but are following the wrong rotation of the mag or distributor. Jim



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jim

04-13-2002 14:15:24




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 Re: Re: Tractor no start!! in reply to Jim Parisot, 12-08-2000 17:01:01  
i lost a part for my tractor



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Bob R

12-08-2000 06:47:06




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Did you Adjust the Valves ?
THere is a procedure for doing this .THe valves are closed when they are adjusted . Number 1 cyl . At tdc can be gapped . THen turn the engine backwards 1/2 revolution . And do the next cylinder according to fireing order . And the next ...
You will have to run the tractor a few hours and retorque the head . And readjust your valves . If there is no gap for the valves the valves will be open all the time .
Hope you get it going

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geo

12-08-2000 05:43:19




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
I thought if the starting fluid DID work, I could explain the way I fixed the fuel problem. But you said ya already tried the starter fluid and it didn't work. So it's a spark thing I guess...that means my solution won't do you any good..geo n



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Dave G

12-07-2000 19:29:08




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
It sounds like you need to take the systematic approach:
1) Get the ignition/valves confirmed- Make sure you get spark at #1 TDC. Since you had it all apart make sure of everything. Take the valve cover off and crank it through the 4 strokes and watch the valves and #1 piston do all its stuff. When this looks right check for a spark by holding the plug against the block. Does it spark when the piston is at TDC on the compression stroke. Also make sure both the lifter are loose and have clearance at #1 TDC (crank on and check other cylinders same way) so that you know they are closing. If you see the plug fire at #1 TDC and valves close, etc then this is good, not ignition.
2)For carb, check to see if gas is getting to carb. Disconnect line and make sure gas is flowing strong to carb. Try hand choking, cover air intake with hand while trying to start. If this doesn't work try the gas trick. Pull the plug and pour a little gas in the cylinders - be careful where you do it. I try and ask myself what would happen if some spilled gas would catch on fire. Being outside is usually good. The tractor should at least pop off and run a little. If it does you know it is a gas problem. Fix the carb, Intake gasket, etc.

Good Luck - You will get it going.

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Bob R again

12-07-2000 19:03:29




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Also with timing . When you put your finger over number one plug hole . Get air pushing out . Come up to thr timing mark . you should hear the rotor
click on the mag . at the timing mark . Is this right on the money ? All this happens at normal cranking or running rotation . This is critical to be at the timing mark for fuel economy and engine health . Plus the hair you might not of pulled out of you head yet Luck , sound like your getting closer .

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Jim Becker

12-08-2000 08:55:50




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 Re: Re: Tractor no start!! in reply to Bob R again, 12-07-2000 19:03:29  
Good suggestion if it has a mag, but this tractor is probably battery ignition.



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Bob R

12-07-2000 18:56:50




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
I'd try pouring a couple teaspoons of gas in the carburator . And see if it will run . Might be a fuel problem . Are the plugs wet after you try to start up ? Or bone dry ? Be carefull with the gas trick . It will pobably start and run out of gas . At least it will determine a fuel problem . Are the carb jets open a few turns ?



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TomH

12-07-2000 16:45:41




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
I'll go out on a limb too:

Get a compression tester and make sure you have proper compression in each cylinder. Could be something in the valve adjustment or camshaft timing isn't right.

Remember to run all you need is:
Proper Fuel/air mixture
Compression
Timed spark

Don't assume any of the three is there until you have verified it for sure.



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Bill Jolley

12-08-2000 20:01:18




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 Re: Re: Tractor no start!! in reply to TomH, 12-07-2000 16:45:41  
I want to think all of you guys for taking the time to try and help this green horn! Having done every thing the list has offered and every thing new, I am begging to think the cam or vales or out of time. Can yall talk me through this?
Bill



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Jim Parisot

12-09-2000 10:10:04




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 Re: Re: Re: Tractor no start!! in reply to Bill Jolley, 12-08-2000 20:01:18  
Bill, Not being there and not knowing what all you did these things are to hard to diagnose. I threw in my 2 cents worth on your plug routing. Only other thing I can think of is, did you change from a magneto to distributor or vice versa. I'm a Minnie - Mo guy that wandered into the IH site (though I do have an MD and farm with a 966) but we had a guy who switched from a mag to a dist. but didn't change the drive gear on his camshaft. The drive and driven have to be paired correctly, I don't know if his distributor was gong half speed of twice the speed, but when he corrected the mistake the tractor took off and ran. This is about all I have to offer. Good luck, these things can be frustrating.

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Charlie

12-07-2000 15:47:39




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Here's a thought - does your rotor turn? I once used too long a bolt to hold the condenser and it sheared a tiny pin inside the distributor that makes the shaft turn.



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geo n

12-07-2000 13:50:03




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
I'm gonna go way out on a limb on this..did you try to start yer tractor by spraying starter fluid in the carb..? Mine would start and keep runnin' that way ONLY..Solution...the one tiny hole in the bottom of the fuel bowl that was so plugged up and silted over ya couldn't see it (there were 4 others that looked o.k.). Let us know if the spray works..if so, Email me and I'll give the gorey details on what I had to do . You'll be kickin' youself if ya have the same trouble I did..geo

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Dave

12-07-2000 15:20:25




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 Re: Re: Tractor no start!! in reply to geo n, 12-07-2000 13:50:03  
I think geo's on to something. It may not be the spark. Are you sure it's getting gas to the cylinders? If you have spark and it's timed, and good compression (which you should have after the re-build) that pretty much leaves gas as the culprit. (Is it good, fresh gas too?) Also, maybe a vacuum leak somewhere on the intake manifold so you're not drawing in enough mixture. Spark plugs could be leaking air, too. Put a little oil around them to see if they bubble.
Good luck.

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The Red

12-07-2000 12:56:28




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 Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 12:23:49  
Bill look at the distributor cap. Which post (clock position wise) are you using for the number one spark plug wire?



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Bill Jolley

12-07-2000 13:46:56




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 Re: Re: Tractor no start!! in reply to The Red, 12-07-2000 12:56:28  
To Red,-I am using the post at 12 oclock, the one with the #1 beside it.
Bill



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The Red

12-07-2000 13:52:37




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 Re: Re: Re: Tractor no start!! in reply to Bill Jolley, 12-07-2000 13:46:56  
OK. First of all what model? I have forgotten.

When the number one piston is on top dead center, does the rotor point to the 12:00 position?

When you rebuilt the engine, did you remove the distributor assembly?



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Bill Jolley

12-07-2000 16:32:20




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 Re: Re: Re: Re: Tractor no start!! in reply to The Red, 12-07-2000 13:52:37  
Hi Red,I have a 1950 Cub Farmall. When the #1 piston is TDS. the roter is at the 12 oclock position. I wasen't getting spark to the plugs because I was so far out of timing. I got it back in time, New carb. kit,condenser, distributer cap,points set at .013 for a international mig.,.D21 plugs set at .025,roter,and wires. it trys to start, coughs and sputters but NO START!
Bill



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