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Harry Ferguson Tractors Discussion Forum
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TEA20 sticking valves?

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Rod in Smiths F

05-27-2005 05:15:30




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When the Fergie starts up it's on all 4. Then it dies out, often down to one or two cylinders, sputtering, until it eventually gets its act together and runs smoothly for the rest of the session. While missing, there is a lot of puffing and blowing through the air cleaner intake as though a valve is not closing properly.

I'm assuming that this is valves sticking. Is there any simple snake-oil solution which won't make things worse?

Thanks.

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Delbert from Lincoln

05-27-2005 18:08:06




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-27-2005 05:15:30  
Here in the states, our gas is unleaded. Unless your tractor has had a lot of updating on valves and guides, and your gas is formulated like ours, you should probably be using a lead additive to your gas. Those older tractors, actually any older engine was made for the lead in the fuel to lubricate the valves. I buy lead additive at Orschenlin farm supply and put it in the gas barrel just before I buy fuel. The fuel going in mixes it. I"v known fellows who didn"t use it to have valve trouble on older tractors. I have a TE-20 with the Contential engine, and had some trouble with it breaking valve springs. But when it broke a valve spring, that cylinder would not fire again until I replaced the spring. I did this by making a tire valve on a old broken spark plug, screwing it into the offending cylinder, after getting it on TDC, and putting air pressure in the cylinder to hold the valves closed while I changed the spring. Hope this helps.

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John(UK)

05-29-2005 04:28:17




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 Re: TEA20 sticking valves? in reply to Delbert from Lincoln, 05-27-2005 18:08:06  
There is no need to use leaded fuel or additives in any engine factory fitted to a Ferguson tractor, no matter where it is made.



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Rod in Smiths Falls, ON,

05-28-2005 04:21:02




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 Re: TEA20 sticking valves? in reply to Delbert from Lincoln, 05-27-2005 18:08:06  
That's neat trick with the tire valve.

This engine is a 1951. North America didn't have leaded gas until the early sixties when Ford and GM came out with high-compression V8's. I can't see that that would be the problem.

My boat engine is a 1949 Chrysler M47 six. No problem at all with modern gas, though I use high test in it.



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Delbert From Lincoln

05-28-2005 18:03:05




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-28-2005 04:21:02  
I disagree with you on the time frame of leaded gas, at least in the US. Lead was added to gas just about as soon as there was engines to run it in. It began to be phased out in the 70s and is now impossible to buy, except you can buy lead additive and mix your own. First vehicle that I owned that ran on unleaded was a 77. They charged 3 or 4 cents a gallon more for it than regular leaded gas. Towards the end of the regular leaded gas, it was 3 or 4 cents higher than unleaded. The lead had certain antiknock benefits, and also served as lubrication for the valves. I think you are confusing lead with whatever is used to make premium gas or Ethyl gas as it is sometimes called. Some old engines run fine on the unleaded regular as they now call it, and others need lead additive to keep from self destructing the valves.

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Rod in Smiths Falls, ON,

05-29-2005 05:37:47




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 Re: TEA20 sticking valves? in reply to Delbert From Lincoln, 05-28-2005 18:03:05  
Actually, I am basing my opinion on an article in Woodenboat Magazine a few years ago by one of the developers of the V8 engine for GM. Later he retired as an executive for John Deere.

He wrote the article to settle the worries of the old boat owners about the coming of unleaded gasoline. Essentially he said that pre-1960's engines were designed to run on unleaded gas and needed no modification to accept the new fuel.

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gerard

05-27-2005 09:05:35




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-27-2005 05:15:30  
Could be sticking valve, but spitting back could equally be ignition . Is distributor cap clean, so it"s not cross-firing on two cyls? Are plugs & points up to scratch? Have you run a compression check? Might even be a broken valve spring. If it is a sticking valve, a shot of upper cyl lubricant into induction wouldn"t hurt, nor some UPC in petrol for a while. I"d thoroughly check ignition first. There"s an old saying that goes something along the lines that most problems attributed to the carburettor will
be found in the ignition.
Hope this helps.

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Rod in Smiths Falls, ON,

05-27-2005 17:03:16




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 Re: TEA20 sticking valves? in reply to gerard, 05-27-2005 09:05:35  
It's a new distributor cap, wires, plugs and I think points and condensor. That didn't change anything.

The other symptom is that it won't idle very slowly without stalling. Running a cement mixer off the pto wasn't practical: it was a centrifuge or stalled.

You named a couple of products I didn't recognize. Care to explain the liquids in terms this Canuck can understand?

Thanks,

Rod

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Dell (WA)

06-01-2005 10:04:15




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-27-2005 17:03:16  
Rod..... ..new distributor cap and new ignition wires? Thats a sure formula for miss-wiring yer ignition system. Do I haffta tell ya, CHECK YER FIRING ORDER??? 1,3,4,2 CW.

These old 4-cylinder tractor engines are soooo goood that they will run on just 2-cylinders and sound good until you putta "LOAD" like a cement mixer on it. Then it ain't gott NO POWER. Well naturally, its only gottz 2-cylinders worth of power..... ..respectfully, Dell

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gerard

05-29-2005 18:32:58




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-27-2005 17:03:16  
I suggested using an upper cylinder lubricant. Red -ex used to be one of them, but now there's all sorts of fancy ones that raise the octane, protect your valve seats, etc. etc. One of the simpler / cheaper one of those will help with a sticking valve. Shouldn't be necessary, but then again no two engines are alike. Sometimes the lubrication of valves on old engines isn't what it could be & gets worse as age reduces oil pressure. Infrequent use is another cause. I've one old v8 engine driven water pump that I use rarely, so give it a big shot of upper cyl lube into carb before shutting it off - keeps everything free for next time.
Good luck.

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tractorfix

05-28-2005 05:00:19




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 Re: TEA20 sticking valves? in reply to Rod in Smiths Falls, ON, , 05-27-2005 17:03:16  
The Prince of Darkness(Lucas) strikes again. Mine does the same thing.



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