Hi all,my name is Jorge i,m from Spain and i,m new in the forum.

I have bought an old injector tester with other used tools,but it does not work and i really don,t know waht is the trouble.
When it is fully assembled,i can,t to move the lever.
If i remove the upper part,just like you can see in the picture,then i can to move the lever a little.


[/URL]http://img501.imageshack.us/img501/8527/jorge025gr6.jpg (http://img501.imageshack.us/img501/8527/jorge025gr6.jpg)
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Shot with hp PhotoSmart 320 (http://profile.imageshack.us/camerabuy.php?model=hp+PhotoSmart+320&make=Hewlett-Packard+Company) at 2007-08-19

Then i can find to small pieces:
A spring,a four helix valve,and a seat for this valve:


http://img521.imageshack.us/img521/8303/injectortester2qu7.jpg (http://imageshack.us)
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Shot with hp PhotoSmart 320 (http://profile.imageshack.us/camerabuy.php?model=hp+PhotoSmart+320&make=Hewlett-Packard+Company) at 2007-08-19


These seems similar to the parts from a calssic injection pump.
Well,removing these parts,i can to see a small piston with a small hole in the center that goes up a short distance when i move the lever.

[URL="http://img227.imageshack.us/img227/3872/injectortester4ys9.jpg"]http://img227.imageshack.us/img227/3872/injectortester4ys9.jpg (http://img227.imageshack.us/img227/3872/injectortester4ys9.jpg)
(Image has been resized. Click it for full size.)

(Image has been resized. Click it for full size.)

Shot with hp PhotoSmart 320 (http://profile.imageshack.us/camerabuy.php?model=hp+PhotoSmart+320&make=Hewlett-Packard+Company) at 2007-08-19


This piston can not does the movement when all is assembled becasuse it is touching the four helix valve seat and it can to goes up.

That is what i have been able to see,but i really don,t know what is happening here or how it should to work.
I have thied to remove the interior parts but i cant to remove the locking washer wich is holding the return spring under the tester .

If someone knows these tools or have a picture or a view of the internal parts,would be nice.
Would like to fix this tool if it is possible.

Thanks in advance.