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A wont start unless you put gas in the plug holes

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Chad from Michi

02-19-2007 06:00:05

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Ok I just got this tractor and we are tinkering with it. I have not done the major tune up on it yet I need to wait for tax money.
We took the carb apart and cleaned it I will rebuild it later or sooner if need be.
Ok if you try to choke this thing it will not start gas can be dripping out of the carb.
put gas in the plug holes it takes right off. Then any time after that it fires right up. If you go out the next day it will not start.
I am guessing its not sucking gas into the engine.
could it be my new exhuast gaskets have not seated yet and that is why it can not suck gas into the engine?
I am up for ideas?
Chad

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Owen Aaland

02-19-2007 21:14:46

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

Have you put fresh gasoline in the tractor? If you did, was it purchased before last fall? In nothern climates gasoline is blended differently depending on the season of use. Gasoline for summer use will not vaporize as well as that blended for winter use. With a down draft carb with an pump this is usually not to much of a problem but an updraft carb may not be able to draw enough vaporized fuel to start. Was the engine is warmed up the fuel will vaporize more readily and the engine will continue to start until it cools off. The light ends of the fuel blend will also evaporate off more quickly than the heavier ends.

When I worked at a dealership this was a common problem even in the summer when we wanted to move machines for mowing. If a combine sat over winter and no fresh gas was added in the spring we always had to prime them to get them started. Always ran fine once you had them running.

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Chad from Michigan

02-20-2007 04:06:53

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Re: A wont start unless you put gas in the plug ho in reply to Owen Aaland, 02-19-2007 21:14:46

It very well could be the gas we didn't drain it and put new in it at least I don't think dad did that. I will give it a try!
chad

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Owen Aaland

02-20-2007 19:48:30

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-20-2007 04:06:53

It really does not take much fresh gas to make a difference. The old gas will work fine if it gets mixed with fresh.

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old

02-19-2007 08:57:14

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

As Rusty and Eltoro have said. Also if this tractor sat for say 6 month or more before you started playing with it your problem could as simple as stuck rings and if so pout a 1/2 cup of tranny fluid in each cylinder and let it sit a few hours, pull the plugs and spin the engine over to clear the tranny fluid then give it a try. If it is stuck rings it will most likely fire right up.

Hobby farm

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El Toro

02-19-2007 07:13:24

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

Hold you hand over the throat of the carburetor while someone tries to start the tractor. You should have good suction on your hand. The intake manifold vacuum is what creates this suction and pulls the atomized fuel into the combustion chamber. Having good rings and a good seal on the valves is necessary for good vacuum as Rusty suggested. Check the bolts on the intake manifold to see if they are snug, don't overtighten. Hal

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RustyFarmall

02-19-2007 06:48:17

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

Chad, might not be anything wrong with your carburetor. It might be the engine itself. Have you done a compression check? Have you had the valve cover off and checked the clearance on the valves?

If the compression is down because of worn pistons/rings, or valves that are not fully closing or seating improperly, the engine will have a hard time of drawing the fuel mix through the carburetor and into the cylinders. Carburetors are both simple and complex at the same time, but if the tractor runs OK once you do get it started, then there probably is not too much wrong with the carb.

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Patrick Martin

02-19-2007 06:31:43

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

Well if you can get it to fire up by directly juicing it like that then there is no question as to your trouble being with the carb.

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IH2444

02-19-2007 06:11:46

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:00:05

Gas should never be dripping out of the carb.

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Ih2444

02-19-2007 09:04:29

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Re: A wont start unless you put gas in the plug ho in reply to IH2444, 02-19-2007 06:11:46

I believe my local TSC has rebuild kits ofr an A.
Lots cheaper than 105.00

Lots of them online $15-25 plus another $25 for the float if you need that.

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Chad from Michigan

02-19-2007 06:17:13

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Re: A wont start unless you put gas in the plug ho in reply to IH2444, 02-19-2007 06:11:46

If you have ever owned a gas engine if it is choked and choked gas will run out of the carb!

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Chad from Michigan

02-19-2007 06:39:35

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:17:13

I knid of thought that but what to look for in the carb?

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IH2444

02-19-2007 07:49:30

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 06:39:35

The idea above about checking the intake suction is a good one. If it is good then the problem is most likely in the carb. Leaky float valve would be a common problem. Or perhaps a clogged jet, or both...

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Chad from Michigan

02-19-2007 07:54:04

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Re: A wont start unless you put gas in the plug ho in reply to IH2444, 02-19-2007 07:49:30

Yes I need to buy the rebuild kit from IH its $105.00
The tractor sat for 5-7 years outside and about 8-10 years ago the dealership rebuilt it.
It could be we just need to let it run for a long time to help seat the rings again.
The manifold was rotted through on the exhaust portion of it so I am sure it got some moister in it. I think it will be ok you can really feel the compression and when the manifold was off and you cranked it over by hand you could hear it really sucking air.
Could be the main jet is plugged?

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IH2444

02-19-2007 10:21:30

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 07:54:04

yep that would do it. It would appear for some reason that the gas is not vaporizing properly in the carb and being drawn into the engine.

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Ronald

02-19-2007 08:38:59

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Re: A wont start unless you put gas in the plug ho in reply to Chad from Michigan, 02-19-2007 07:54:04

Chad

I just bought a carb kit for an A from my local napa for less than half of that. You need the carb # for them to look it up. Some kits are also more complete than others, just depends on what you need.

Ronald

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