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Harry Ferguson Tractors Discussion Forum
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Ferguson t20 diesel problems

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Mich321

04-06-2008 09:07:09




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I have completly done up an engine on a ferguson diesel but am having problems as it is hard to start & when it does it is very smokey (blue smoke) It will start with a squirt of diesel from the kgas tank & use of the heater plug.
When the engine is running there is constantly blue smoke & when there are high revs on the engine it will give puffs of blue smoke with a missfire at the same time.
Both the fuel pump & injectors have been reconditioned.
Does anyone have any ideas?

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Jon A. Stefansson

04-08-2008 09:10:25




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 Re: Ferguson t20 diesel problems in reply to Mich321, 04-06-2008 09:07:09  
A blue smoke is an indication of lubricating oil being burned , a problem in fuel pump/timing/injectors would result in black smoke ie incomplete combustion, a white smoke --unburned fuel JonAudur



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tractorsam

04-06-2008 16:18:52




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 Re: Ferguson t20 diesel problems in reply to Mich321, 04-06-2008 09:07:09  
Have you spill timed the pump? Have you rebuilt the Ki-gas pump? tractorsam



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Mich321

04-07-2008 13:56:36




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 Re: Ferguson t20 diesel problems in reply to tractorsam, 04-06-2008 16:18:52  
Tractorsam
No I have not spill timed the pump / was told I only need to reset the pump to the previous timing marks?
I have not rebuilt th ki-gas pump either.
Would the spill timing leave the tractor hard to start & smokey?

Mich321



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tractorsam

04-07-2008 15:43:51




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 Re: Ferguson t20 diesel problems in reply to Mich321, 04-07-2008 13:56:36  
Those tractors are pretty picky about their timing. When you say you completely rebuilt the engine did you remove/replace the timing chain or any of the sprockets? If so your injection pump is likely out of time. On my TEF I had to replace the front oil seal. It had been a beautiful starter and runner and afterwards it just wasn't right. Took it all apart again and found that while the tension was off the chain it had slipped a tooth on one sprocket despite my checking prior to reassembly. So are you 100% sure that the timing chain is on correctly? If the timing chain is correctly installed I would be tempted to try spill timing it. Where abouts are you? tractorsam

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Mich321

04-08-2008 06:05:46




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 Re: Ferguson t20 diesel problems in reply to tractorsam, 04-07-2008 15:43:51  
Tractorsam
I am sure the timing is correct.
The chain was removed & a new one fitted.
All sprockets line up exactly as they should.
When I had the pump reconditioned they told me all I had to do was fit to the previous markings.
Would you still recomend the spill timing?



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tractorsam

04-08-2008 17:48:52




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 Re: Ferguson t20 diesel problems in reply to Mich321, 04-08-2008 06:05:46  
Okay, I have never personally spill timed an engine but I do know roughly how. I have also experienced a TEF that was exceptionally difficult to start, even warm, which after spill timing was an incredible instant starter. Here's my thinking - when you changed the timing chain you will have (slightly) altered the relationship of the pump/crank/cam, so if your pump was in time before it might no longer be. So if you spill time the pump you can be absolutely sure that it's correctly timed to the engine. If it doesn't improve things then you can always return it to your existing marks.

This isn't something that I've done but it's not something that I'd be afraid to do either. I've done the rough equivalent (rotary v.s. inline pumps) on my 35 with the 23C diesel. A general spill timing procedure involves removing the No.1 delivery valve from the injector pump, setting the engine to the required position (described in the manual), and rotating the pump until you locate the point where the plunger is just cutting off the fuel from the spill port. In essence all you are doing is setting the timing of the start of the injection cycle. I wish I could give you the proper Ferguson procedure but I've lent my manual and probably won't have it back for a week or so. If you can wait I'll send you info.

Spill timing isn't the first thing I would try but I get the feeling you've tried most of the basics already. Send me an email if you'd rather. tractorsam

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