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Why does it take so long for my super dexta to fire up

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dave

11-28-2001 16:15:30




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starting seems to take a long time, especially in cold weather. i depress the fuel button on the side of the engine and depress the 40 second cold start button prior to depressing the ignition lever. is there any way to improve the time this takes.last time i wore my battery down without managing to start her up. my neighbours fergy 35 starts on the turn of a key.




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hank schade

12-09-2001 22:28:25




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
do a compression check.



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dave

12-09-2001 14:43:43




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
thanks for all the responses - brian provided the solution, so for those of you having the same trouble - here's the starting procedure for laymen trying cold starting super dextas. stand to the side of the engine as you wont do it all from the drivers seat! depress a button on the side of the engine that is connected to the throttle line, depress the 40 second cold start button and after 40 secs tap a lever near the fuel filter twice (squirts fuel onto hot element)immediately reach over and depress the starter handle. up she fires!!

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Don

12-09-2001 07:27:54




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
Injectors - I rebuilt my dexta engine so compression should be good but it still struggles to start with the heater. it runs a bit uneven so i had the injector pump serviced (but not reconditioned yet)
after a bit of mixing and matching pump components the engineer said the pump was now working sufficiently on all cylinders. this didnt improve starting though. However i took the injectors to a friend(expert) whos got a tester, they proved to be in terrible condition so badly worn that they blew fuel out everywhere and had erroded badly. He was very suprised the tractor started at all - it doesnt smoke appreciably either. maybe the engine is a good starter - just got the odds stacked against it. I also intend to check the primer i reckon it maybe slightly blocked as well as the heater - its seen plenty of use.

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p.bures

12-03-2001 00:09:08




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
just a thought if its been like that for a long time the compresions are low.probley cylinders are worn out.mybe



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Brian

11-29-2001 11:23:12




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
Dave,
On the fuel tap of your tractor should be a primer. On the intake manifold, on the heater unit, the bit with the heavy wire, there should be a tap with a diesel pipe that leads back to the primer.

The cold start sequence should be: Turn on the manifold/heater tap. Hold the heat button for 40 seconds, press the primer twice. Press the starter straight away.

The diesel you squirt onto the heater ignits and a flame occurs in the intake manifold which is drawn into the cylinders and ensures that the diesel from the injectors ignites, so starting the engine.

This is why you should not use ether and heater on these tractors. When the ether is drawn into the intake manifold and hits the red hot heater element, it will explode with disasterous results.

The manifold tap must be turned off once the tractor is running as diesel can be drawn in here causing rough running.

Unless you have the diesel burning in the inlet manifold, holding the heater down for two hours will not cause the tractor to start.

regards

Brian

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Mark Myers

12-05-2001 21:54:24




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 Re: Re: why does it take so long for my super dexta to fire up in reply to Brian, 11-29-2001 11:23:12  
Would this apply to a '63 Super Major as well?? I just bought one, and cannot get it started. It cranks fine, and the exhaust smokes like it is trying, but it just never catches!

Are there any other suggestions?? Do Fordson's require me to have a certian tongue position?? :)

Thanks,
Mark



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Brian

12-06-2001 11:03:42




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 Re: Re: Re: why does it take so long for my super dexta to fire up in reply to Mark Myers, 12-05-2001 21:54:24  
Mark,
A Super is a direct injection engine and will normally start immediatly it passes 1 compression. You must have a problem with pump or something. Try griping the cold start button on the pump and pulling it out. It may be stuck.

Regards

Brian



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richard

12-06-2001 18:54:29




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 Re: Re: Re: Re: why does it take so long for my super dexta to fire up in reply to Brian, 12-06-2001 11:03:42  
Arn't super dextas interesting ? Mine is a very late 1964 and it starts by itself when i lift up the shed door ! Well nearly. Just turn the key, set the throttle, and push the starter lever. No heating the manifold, no pumping fuel no matter what the temperature. I'm either lucky, or there is something wrong with it. If it's the latter then I dont propose to fix it ! I'm no help to you as I am rather a novice with super dextas but good luck anyway !

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Steve R

11-28-2001 19:50:04




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 Re: why does it take so long for my super dexta to fire up in reply to dave, 11-28-2001 16:15:30  
Are you sure the heater is working? When I do what you said my SD generally starts after a couple of turns when it's cold here in Australia (but that is only about 20F) so I don't know if you are colder than that.



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