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Stationair problem

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Peter ten Hoor

01-09-2004 01:25:56

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The engine run not slow,
I think it's the carburateur the tuning of it.
There are coming flames out of the engine (uitlaat) I don't no how you write it. I'm sorry
Peter.

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Joe (Wa)

01-11-2004 09:30:33

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Re: Stationair problem in reply to Peter ten Hoor, 01-09-2004 01:25:56

Peter, It appears you have afterfire in the exhaust as opposed to backfire back through the carb.

In troubleshooting check the timing and valve lash first. If both are correct go to fuel mixture.

Fuel wise backfire is too lean a mixture, afterfire is generally too rich I.E. the fuel is still burning or reignites when the exhaust valve opens. This can also be caused by a very lean mixture burning very slowly leaving unburned fuel to push out on the exhaust stroke and reignited in the hot exhaust manifold.

The reason the idle screw makes a difference is that you are varying the mixture (air or fuel depending of your carb) when the throttle plate is nearly closed with engine at idle or very low rpm. When the rpm is raised, the throttle plate opens the power jet and it controls nearly all the fuel delivery, the idle mixture adjustment now has little or no effect.

Set the idle mixture screw at idle rpm. Raise engine engine rpm to near full speed and try setting it. If that doesn't work you probably need a carb overhaul.

Joe

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Joe (Wa)

01-11-2004 09:48:40

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Re: Re: Stationair problem in reply to Joe (Wa), 01-11-2004 09:30:33

The last 2 lines were not very clear. It should read as follows:

Set the idle mixture screw at idle rpm. Raise engine engine rpm to near full speed and try setting the POWER JET adjustment screw. If that doesn't work you probably need a carb overhaul.

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deano

01-09-2004 16:24:04

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Re: Stationair problem in reply to Peter ten Hoor, 01-09-2004 01:25:56

i think what you are trying to say is that your tractor backfires thru the exhaust, and is running at high rpm? what is the tractor? just guessing could be carb setting/govenor/or timing of engine i.e. distributer..i'm not an expert, but there are alot of people on this site, will be able to help you better. good luck. are you from finland?

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Peter ten hoor

01-10-2004 13:48:58

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Re: Re: Stationair problem in reply to deano, 01-09-2004 16:24:04

Thank you for your commend, and no i'm not from finland but from Holland, The tractor is a te 20 (1952) When the engine runs at high rpm and you turning it to lower rpm there are coming bangs and flames from the pipe and at slow rpm the engine will turn of it dussent run at low rpm.

I hope to hear more about it.

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D.L.

01-10-2004 17:30:32

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Re: Re: Re: Stationair problem in reply to Peter ten hoor , 01-10-2004 13:48:58

Hi Peter,
Check the carburetor on your tractor. It sounds like either the float level is too high, or that the needle valve is worn and doesn't shut off the flow of fuel. Either way, the carb will dump way too much fuel into the engine which can cause backfiring and flames. When the engine runs, do you smell a strong odor of fuel? If so, that is another sign of carb problems. Hope this helps!

Best Regards,
D.L.

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D.L.

01-10-2004 17:35:13

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Re: Re: Re: Re: Stationair problem in reply to D.L., 01-10-2004 17:30:32

Please let me know if you need more help with this problem... I can give you a bit more information on checking your carburetor if you need it, could have translated into German if that would help...

Regards,
D.L.

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Peter ten hoor

01-11-2004 02:40:43

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Re: Re: Re: Re: Re: Stationair problem in reply to D.L., 01-10-2004 17:35:13

No i have don't have problems with reading it. But the carurateur is not over floating,
There are two tuning screws one at the top of the carburateur and one at the bottem, If i turn the uppest screw a little out then there no longer coming flames from the pipe as you turn from high rpm to low rpm.
But if i turn the screw at the bottom, nothing will happen i think this is the screw for stationair can it be this little valve where the screw in is, is blockt?????

I hope you apply

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Peter ten hoor

01-11-2004 02:41:39

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Re: Re: Re: Re: Re: Re: Stationair problem in reply to Peter ten hoor, 01-11-2004 02:40:43

Maybe is the timing not good could it be????

Peter

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D.L.

01-11-2004 06:45:33

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Re: Re: Re: Re: Re: Re: Re: Stationair problem in reply to Peter ten hoor, 01-11-2004 02:41:39

At this point, I would check all systems. Begin by checking the contact points in the distributor. If they are pitted, replace... if they are clean, check for the correct gap. Check distributor cap for cracks and that all spark plug wires (and the coil wire) are making good contact. Then, check your timing. If all this checks out OK, look for air leaks (maybe where the carb bolts on to the manifold) or vacuum leaks. Without seeing the carb, I'm not sure about the two screws, but sounds like you're on the right track.

Regards,
D.L.

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Peter ten hoor

01-12-2004 05:08:00

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Re: Re: Re: Re: Re: Re: Re: Re: Stationair problem in reply to D.L., 01-11-2004 06:45:33

All right i'm going to replace the contact points there totaly burned in.
I think i have the problem now thank you.

Greetz Peter

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