mercedes sprinter 312 - it was running fine, but then I stopped it and when i went to start it again it will not start. if i spray easy-start then it runs and then stops again when it runs out.

Not much Sprinter knowledge here. It would be helpful if you included the engine number so people with similar engines in other vehicles might be able to help.
It sounds to me as if the lift pump has failed or something else which has stopped fuel flow to the engine such as the shut off valve not releasing. Spraying easy start into the engine could be very unhealthy for the engine depending on exactly what engine it is.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Hi It is geting fuel up ok so not that thats y i ma

You sort of answered the question when it ran on the Spray and dies when it runs out. Spray= Fuel; No Spray = No Fuel meaning as Kerry said you are not getting Fuel from your Fuel System (Fuel Supply or Fuel Injection parts).

The most likely cause is your Fuel Filter/s is/are Plugged. Change them if for no othere reason than to eliminate them as a source of the problem. If you have a Spin-on type Fuel Filter fill it up as much as you can with clean Diesel Fuel before you install it.
This will decrease the amount of time you will need to Crank the Engine.

Depending on the device that shuts off your Engine that could also be a cause.
Example: My Volvo Diesel has a small Solenoid that shuts the Fuel off when the Voltage is cut off and that shuts down the Engine. It allows Fuel in when it has Voltage. If it did not work I would not get Fuel.

Could it be that your Fuel Gauge is not working right and you are out of Fuel?

You might as well give all the info. Year Model and so on.

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84 300D, 82 Volvo 244Gl Diesel

Have you been using only Diesel Fuel?

If you do an internet search; Dodge Sprinter forum you will find at lest 2 forums.

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84 300D, 82 Volvo 244Gl Diesel

I think the model is a 312d. This means the engine puts out 120hp. (and it's a 3 ton van) I don't know what engine that is unless it's a 617 turbo but I'm pretty sure MB put few if any 617 turbos in the Sprinter.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Hi if I crak the injetector I am geting fuel .But it will not start

Bad glow plugs? That's a reach because once it starts running on ether, it should continue running on diesel even if the glow plugs are bad.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

When you find out what is wrong please be sure to post the info so we can pass it on to the next person with the same problem.

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84 300D, 82 Volvo 244Gl Diesel

It's a 2.9l direct injected 602 with rotary pump... computer controlled to boot.

Sprinters are beastly complicated vehicles. I think maybe it's because they are produced mainly as fleet vehicles and therefore are to be serviced by trained fleet mechanics and will shut down if even minor problems occur (negligent drivers can't drive them into the ground). As mentioned above, there are two excellent forums - Sprinter Source and Yahoo Sprinter. These forums are, for Sprinter owners, what this is for diesel MBs.
How do I know this? With the help of this forum I have successfully maintained and grown to love my old MB diesels. Last year I took the plunge and bought a Sprinter. I really like it, but man-o-man is it ever complicated.

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John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln

As recommended, Absolutely go here:
sprinter-source.com/forum/index.php

__________________
1985 300D
The rest:
1957 MGA (comatose)
1965 Falcon (sleeping)
1966 E-100 (rust test in progress)
1976 Ford 3400 D Tractor (workhorse)
1978 Mercury Zephyer (5L playtoy)
1995 Isuzu NPR D (fetcher)
1998 Subaru Legacy (Spare)
2000 Toyota Sienna (School bus)
2008 Toyota Prius (Commuter)